• Author / Uploaded
• Aheron Hizmo

• Categories
• Fuga
• Conector eléctrico
• Tubería (transporte de fluidos)
• Aire acondicionado
• Termostato

Citation preview

Si37 - 701

DRAFT

REYQ8-48PY1 R-410A Heat Recovery 50Hz

Si37-701

R-410A Heat Recovery 50Hz 1. Introduction ............................................................................................ vi 1.1 Safety Cautions ....................................................................................... vi 1.2 PREFACE ................................................................................................x

Part 1 General Information ........................................................... 1 1. Model Names of Indoor/Outdoor Units....................................................2 2. External Appearance...............................................................................3 2.1 Indoor Units ..............................................................................................3 2.2 Outdoor Units ...........................................................................................4

3. Combination of Outdoor Units.................................................................5 4. Model Selection.......................................................................................6

Part 2 Specifications .................................................................... 9 1. Specifications ........................................................................................10 1.1 Outdoor Units .........................................................................................10 1.2 Indoor Units ............................................................................................21 1.3 BS Units .................................................................................................47

Part 3 Refrigerant Circuit ........................................................... 49 1. Refrigerant Circuit .................................................................................50 1.1 1.2 1.3 1.4 1.5 1.6 1.7

REYQ8P, 10P, 12P ................................................................................50 REYQ14P, 16P ......................................................................................52 REMQ8PY1 (Multi 8HP).........................................................................54 REMQ10PY1, 12PY1 (Multi 10, 12HP) ..................................................56 REMQ14PY1, 16PY1 (Multi 14, 16HP) ..................................................58 BS Unit Functional Parts ........................................................................60 Indoor Units ............................................................................................61

2. Functional Parts Layout ........................................................................62 2.1 2.2 2.3 2.4 2.5

REYQ8P, 10P, 12P ................................................................................62 REYQ14P, 16P ......................................................................................63 REMQ8P ................................................................................................64 REMQ10P, 12P......................................................................................65 REMQ14P, 16P......................................................................................66

3. Refrigerant Flow for Each Operation Mode...........................................67

Part 4 Function............................................................................ 95 1. Function General...................................................................................96 1.1 Symbol ...................................................................................................96 1.2 Operation Mode......................................................................................98

2. Basic Control.........................................................................................99 2.1 Normal Operation ...................................................................................99 2.2 Compressor PI Control.........................................................................100 Table of Contents

i

Si37-701

2.3 2.4 2.5 2.6

Electronic Expansion Valve PI Control.................................................108 Step Control of Outdoor Unit Fans .......................................................108 Outdoor Unit Fan Control in Cooling Operation ...................................109 Heat Exchanger Control .......................................................................110

3. Special Control....................................................................................111 3.1 3.2 3.3 3.4 3.5 3.6 3.7

Startup Control .....................................................................................111 Large Capacity Start Up Control (Heating)...........................................113 Oil Return Operation ............................................................................114 Defrost Operation .................................................................................118 Pump-down Residual Operation ..........................................................120 Standby ................................................................................................122 Stopping Operation ..............................................................................123

4. Protection Control ...............................................................................124 4.1 4.2 4.3 4.4 4.5

High Pressure Protection Control.........................................................124 Low Pressure Protection Control..........................................................126 Discharge Pipe Protection Control .......................................................128 Inverter Protection Control ...................................................................129 STD Compressor Overload Protection.................................................131

5. Other Control.......................................................................................132 5.1 Backup Operation.................................................................................132 5.2 Demand Operation ...............................................................................132 5.3 Heating Operation Prohibition ..............................................................132

6. Outline of Control (Indoor Unit) ...........................................................133 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9

Operation Flow Chart ...........................................................................133 Thermostat Control...............................................................................135 Drain Pump Control..............................................................................138 Freeze Prevention ................................................................................140 Heater Control (Optional PC Board KRP1B...is required.) ...................141 List of Swing Flap Operations ..............................................................142 Electronic Expansion Valve Control .....................................................143 Hot Start Control (In Heating Operation Only)......................................144 Louver Control for Preventing Ceiling Dirt............................................145

Part 5 Test Operation ............................................................... 147 1. Test Operation ....................................................................................148 1.1 Installation Process ..............................................................................148 1.2 Procedure and Outline .........................................................................149 1.3 Operation when Power is Turned On ...................................................168

2. Outdoor Unit PC Board Layout ...........................................................169 3. Field Setting ........................................................................................170 3.1 Field Setting from Remote Controller ...................................................170 3.2 Field Setting from Outdoor Unit............................................................183

ii

Table of Contents

Si37-701

Part 6 Troubleshooting ............................................................. 209 1. Symptom-based Troubleshooting .......................................................212 2. Troubleshooting by Remote Controller ...............................................215 2.1 2.2 2.3 2.4 2.5 2.6 2.7

The INSPECTION / TEST Button.........................................................215 Self-diagnosis by Wired Remote Controller .........................................216 Self-diagnosis by Wireless Remote Controller .....................................217 Inspection Mode ...................................................................................220 Remote Controller Service Mode .........................................................221 Test Run Mode.....................................................................................223 Remote Controller Self-Diagnosis Function .........................................223

3. Troubleshooting by Indication on the Remote Controller ....................230 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 3.27 3.28 3.29 3.30

Table of Contents

“A0” Indoor Unit: Error of External Protection Device ...........................230 “A1” Indoor Unit: PC Board Defect.........................................................231 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) ......232 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload...............................234 “A7” Indoor Unit: Malfunction of Swing Flap Motor (M1S) .....................235 “A9” Electronic Expansion Valve Malfunction / Dust Clogging ..............237 “A9” Indoor Unit: Malfunction of Electronic Expansion Valve Coil.........239 “AF” Indoor Unit: Drain Level above Limit..............................................241 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..........242 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger....................................................................................243 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes..........244 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........245 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller ................................................................................246 “E1” Outdoor Unit: PC Board Defect ......................................................247 “E3” Outdoor Unit: Actuation of High Pressure Switch ..........................248 “E4” Outdoor Unit: Actuation of Low Pressure Sensor ..........................250 “E5” Outdoor Unit: Inverter Compressor Motor Lock.............................252 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/Lock..............254 “E7” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ...................255 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E~Y5E)...............................................258 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ..................260 “F6” Outdoor Unit: Refrigerant Overcharged.........................................262 “F9” Malfunction of BS Unit Electronic Expansion Valve.......................263 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal.......................265 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air ...........................................................................................267 “J2” Outdoor Unit: Current Sensor Malfunction ....................................268 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31, 32T, 33T) ....................................................................................269 “J4” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T)....................................................270 “J5” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction Pipe .........................................................................................271 “J6” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger ..............................................................272 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T), (R9T) or (R14T).........................................................................273 iii

Si37-701

3.31 “J8” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) ......................................................................................274 3.32 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) ..................................275 3.33 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................276 3.34 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......................278 3.35 “L1” Outdoor Unit: Defective Inverter PC Board ....................................280 3.36 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise.................................................................................281 3.37 “L5” Outdoor Unit: Momentary Overcurrent of Inverter Compressor.....283 3.38 “L8” Outdoor Unit: Momentary Overcurrent of Inverter Compressor.....285 3.39 “L9” Outdoor Unit: Inverter Compressor Starting Failure ......................287 3.40 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board .............................................................290 3.41 “P1” Outdoor Unit: Inverter Over-Ripple Protection ...............................293 3.42 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor ....................................................................294 3.43 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board.........................................................296 3.44 “UO” Outdoor Unit: Gas Shortage Alert .................................................297 3.45 “U1” Reverse Phase, Open Phase.........................................................299 3.46 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure...........................................................................300 3.47 “U3” Outdoor Unit: Check Operation not Executed ...............................303 3.48 “U4” Malfunction of Transmission between Indoor Units.......................304 3.49 “U5” Indoor Unit: Malfunction of Transmission between Remote Controller and Indoor Unit.......................................................307 3.50 “U7” Outdoor Unit: Transmission Failure (Across Outdoor Units) .........308 3.51 “U8” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers .......................................................................314 3.52 “U9” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System ......................................................315 3.53 “UA” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller.....................................................316 3.54 “UC” Address Duplication of Centralized Controller ...............................319 3.55 “UE” Malfunction of Transmission between Centralized Controller and Indoor Unit .................................................320 3.56 “UF” System is not Set yet .....................................................................323 3.57 “UH” Malfunction of System, Refrigerant System Address Undefined ...............................................324

4. Troubleshooting (OP: Central Remote Controller) ..............................326 4.1 “M1” PC Board Defect ............................................................................326 4.2 “M8” Malfunction of Transmission between Optional Controllers for Centralized Control...............................................................................327 4.3 “MA” Improper Combination of Optional Controllers for Centralized Control...............................................................................328 4.4 “MC” Address Duplication, Improper Setting ..........................................330

5. Troubleshooting (OP: Unified ON/OFF Controller) .............................331 5.1 Operation Lamp Blinks .........................................................................331 5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink) .....333 5.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ....336

iv

Table of Contents

Si37-701

Part 7 Appendix......................................................................... 351 1. Piping Diagrams..................................................................................352 1.1 Outdoor Unit .........................................................................................352 1.2 Indoor Unit............................................................................................357 1.3 BS Unit .................................................................................................360

2. Wiring Diagrams for Reference...........................................................361 2.1 2.2 2.3 2.4

Outdoor Unit .........................................................................................361 Field Wiring ..........................................................................................366 Indoor Unit............................................................................................369 BS Unit .................................................................................................384

3. List of Electrical and Functional Parts .................................................385 3.1 Outdoor Unit .........................................................................................385 3.2 Indoor Side ...........................................................................................390

4. Option List ...........................................................................................396 4.1 Option List of Controllers......................................................................396 4.2 Option Lists (Outdoor Unit)...................................................................398

5. Piping Installation Point.......................................................................399 5.1 Piping Installation Point ........................................................................399 5.2 The Example of a Wrong Pattern .........................................................400

6. 7. 8. 9.

Example of Connection (R-410A Type) ..............................................401 Thermistor Resistance / Temperature Characteristics........................405 Pressure Sensor .................................................................................407 Method of Checking the Inverter’s Power Transistors and Diode Modules ....................................................................................408 9.1 Method of Checking the Inverter’s Power Transistors and Diode Modules .....................................................................................408

Part 8 Precautions for New Refrigerant (R-410A) .................... 411 1. Precautions for New Refrigerant (R-410A) .........................................412 1.1 Outline ..................................................................................................412 1.2 Refrigerant Cylinders............................................................................414 1.3 Service Tools........................................................................................415

Index

............................................................................................. i

Drawings & Flow Charts ................................................................ v

Table of Contents

v

Introduction

Si37-701

1. Introduction 1.1

Safety Cautions

Cautions and Warnings

„ Be sure to read the following safety cautions before conducting repair work. „ The caution items are classified into “ Warning” and “ Caution”. The “

Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “ Caution” items can also lead to serious accidents under some conditions if they are not followed. Therefore, be sure to observe all the safety caution items described below. „ About the pictograms This symbol indicates an item for which caution must be exercised. The pictogram shows the item to which attention must be paid. This symbol indicates a prohibited action. The prohibited item or action is shown inside or near the symbol. This symbol indicates an action that must be taken, or an instruction. The instruction is shown inside or near the symbol. „ After the repair work is complete, be sure to conduct a test operation to ensure that the equipment operates normally, and explain the cautions for operating the product to the customer

1.1.1 Caution in Repair Warning Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair. Working on the equipment that is connected to a power supply can cause an electrical shook. If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits, do not touch any electrically charged sections of the equipment. If the refrigerant gas discharges during the repair work, do not touch the discharging refrigerant gas. The refrigerant gas can cause frostbite.

When disconnecting the suction or discharge pipe of the compressor at the welded section, release the refrigerant gas completely at a well-ventilated place first. If there is a gas remaining inside the compressor, the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected, and it can cause injury. If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant gas can generate toxic gases when it contacts flames.

The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. Be sure to discharge the capacitor completely before conducting repair work. A charged capacitor can cause an electrical shock.

Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug. Plugging or unplugging the power cable plug to operate the equipment can cause an electrical shock or fire.

vi

Si37-701

Introduction

Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock.

Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.

Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

Be sure to turn off the power switch and unplug the power cable when cleaning the equipment. The internal fan rotates at a high speed, and cause injury.

Do not tilt the unit when removing it. The water inside the unit can spill and wet the furniture and floor.

Be sure to check that the refrigerating cycle section has cooled down sufficiently before conducting repair work. Working on the unit when the refrigerating cycle section is hot can cause burns. Use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency.

1.1.2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can cause an electrical shock, excessive heat generation or fire. When relocating the equipment, make sure that the new installation site has sufficient strength to withstand the weight of the equipment. If the installation site does not have sufficient strength and if the installation work is not conducted securely, the equipment can fall and cause injury. Be sure to install the product correctly by using the provided standard installation frame. Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting in injury. Be sure to install the product securely in the installation frame mounted on a window frame. If the unit is not securely mounted, it can fall and cause injury. Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

For integral units only

For integral units only

vii

Introduction

Si37-701

Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire. When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire. Do not damage or modify the power cable. Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the power cable, and heating or pulling the power cable can damage the cable.

Do not mix air or gas other than the specified refrigerant (R-410A) in the refrigerant system. If air enters the refrigerating system, an excessively high pressure results, causing equipment damage and injury. If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After charging refrigerant, make sure that there is no refrigerant leak. If the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and close the service valve, to prevent the refrigerant gas from leaking into the room. The refrigerant gas itself is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters, stoves and ranges. When replacing the coin battery in the remote controller, be sure to disposed of the old battery to prevent children from swallowing it. If a child swallows the coin battery, see a doctor immediately.

Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire.

Be sure to install the packing and seal on the installation frame properly. For integral units If the packing and seal are not installed properly, water can enter the room and only wet the furniture and floor.

1.1.3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the plug has dust or loose connection, it can cause an electrical shock or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to replace them. Damaged cable and wires can cause an electrical shock, excessive heat generation or fire.

Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire.

viii

Si37-701

Introduction

Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury. Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 Mohm or higher. Faulty insulation can cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage can cause the water to enter the room and wet the furniture and floor.

1.1.4 Using Icons Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below:

1.1.5 Using Icons List Icon

Type of Information Note

Description A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.

Note: Caution

A “caution” is used when there is danger that the reader, through incorrect manipulation, may damage equipment, loose data, get an unexpected result or has to restart (part of) a procedure.

Warning

A “warning” is used when there is danger of personal injury.

Reference

A “reference” guides the reader to other places in this binder or in this manual, where he/she will find additional information on a specific topic.

Caution

Warning

ix

Introduction

1.2

Si37-701

PREFACE Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2007 VRVIII series Heat Recovery System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs. This service manual contains information regarding the servicing of VRVIII series R-410A Heat Recovery System.

Aug., 2007 After Sales Service Division

x

Si37-701

Part 1 General Information 1. Model Names of Indoor/Outdoor Units....................................................2 2. External Appearance...............................................................................3 2.1 Indoor Units ..............................................................................................3 2.2 Outdoor Units ...........................................................................................4

3. Combination of Outdoor Units.................................................................5 4. Model Selection.......................................................................................6

General Information

1

Model Names of Indoor/Outdoor Units

Si37-701

1. Model Names of Indoor/Outdoor Units Indoor Units Type

Power Supply

Model Name

Ceiling Mounted Cassette Type (Double Flow)

FXCQ

20M

25M

32M

40M

50M

63M

80M

Ceiling Mounted Cassette Type (Multi Flow)

FXFQ

—

25M

32M

40M

50M

63M

80M

600×600 Ceiling Mounted Cassette Type

FXZQ

—

—

—

Ceiling Mounted Cassette Corner Type

FXKQ

—

—

63MA

—

FXDQPVE

20P

25P

32P

—

—

—

FXDQPVET

20P

25P

32P

—

—

—

Slim Ceiling Mounted Duct Type

—

125M

—

—

—

—

100M 125M

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

VE

FXDQNAVE

20M8 25M8 32M8 40M8 50M8 25MA 32MA 40MA

20NA 25NA 32NA 40NA 50NA 63NA

V1B

VE

FXDQNVET

20N

25N

32N

40N

50N

63N

—

Ceiling Concealed (Duct) Type (Aus. exclusive use)

FXDYQ

—

—

—

—

—

—

80M

100M 125M 145M 180M 200M 250M

Ceiling Mounted Built-In Type

FXSQ

20M

25M

32M

40M

50M

63M

80M

100M 125M

—

—

Ceiling Mounted Duct Type

FXMQ

—

—

—

40MA 50MA 63MA 80MA 100MA 125MA

—

—

Ceiling Suspended Type

FXHQ

—

—

32MA

Wall Mounted Type

—

—

—

V1

—

200MA 250MA

63MA

—

100MA

—

—

—

—

—

FXAQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

Floor Standing Type

FXLQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

Concealed Floor Standing Type

FXNQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

VE

Note: FXDQ has following 2 Series, as show below. FXDQ-P, N(A)VET: without Drain Pump (For General, Asia: except for EU, China and Australia) FXDQ-P, N(A)VE: with Drain Pump MA, NA: RoHS Directive models; Specifications, Dimensions and other functions are not changed compared with M, N type. FXZQ: only for EU Australia FXDYQ: only for Australia

BS Units Type Heat Recovery Series

BSVQ

Model Name 160P

100P

Power Supply V1

250P

Outdoor Units Normal Series Series Heat Recovery

REYQ

8P 26P 44P

10P 28P 46P

12P 30P 48P

Model Name 14P 16P 32P 34P

Power Supply 18P 36P

20P 38P

22P 40P

24P 42P

Y1(E)

E: The unit with anti corrosion treatment

YE : 1φ, 220 ~ 240V, 50Hz / 220V, 60Hz V1 : 1φ, 220 ~ 240V, 50Hz Y1 : 3φ, 380 ~ 415V, 50Hz

2

General Information

Si37-701

External Appearance

2. External Appearance 2.1

Indoor Units

Ceiling Mounted Cassette Type (Double Flow) FXCQ20M FXCQ25M FXCQ32M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M

Ceiling Mounted Duct Type FXMQ40MA FXMQ50MA FXMQ63MA FXMQ80MA FXMQ100MA FXMQ125MA FXMQ200MA FXMQ250MA

FXMQ40~125M

FXMQ200 · 250M

Ceiling Mounted Cassette Type (Multi Flow) FXFQ25M FXFQ32M FXFQ40M FXFQ50M FXFQ63M FXFQ80M FXFQ100M FXFQ125M

600×600 Ceiling Mounted Cassette Type (Multi Flow) FXZQ20M8 FXZQ25M8 FXZQ32M8 FXZQ40M8 FXZQ50M8

Ceiling Mounted Cassette Corner Type FXKQ25MA FXKQ32MA FXKQ40MA FXKQ63MA

Slim Ceiling Mounted Duct Type FXDQ20P FXDQ20N(A) FXDQ25P FXDQ25N(A) FXDQ32P FXDQ32N(A) FXDQ40N(A) FXDQ50N(A) FXDQ63N(A) with Drain Pump (VE) without Drain Pump (VET)

Ceiling Concealed (Duct) Type (Aus. exclusive use) FXDYQ80M FXDYQ100M FXDYQ125M FXDYQ145M FXDYQ180M FXDYQ200M FXDYQ250M

Ceiling Suspended Type FXHQ32MA FXHQ63MA FXHQ100MA

Wall Mounted Type FXAQ20MA FXAQ25MA FXAQ32MA FXAQ40MA FXAQ50MA FXAQ63MA

Floor Standing Type FXLQ20MA FXLQ25MA FXLQ32MA FXLQ40MA FXLQ50MA FXLQ63MA

Concealed Floor Standing Type FXNQ20MA FXNQ25MA FXNQ32MA FXNQ40MA FXNQ50MA FXNQ63MA

BS Units BSVQ100P BSVQ160P BSVQ250P

Ceiling Mounted Built-In Type FXSQ20M FXSQ25M FXSQ32M FXSQ40M FXSQ50M FXSQ63M FXSQ80M FXSQ100M FXSQ125M

General Information

3

External Appearance

2.2

4

Si37-701

Outdoor Units REYQ8P, 10P, 12P, 14P, 16P

REYQ18P, 20P, 22P, 24P

8, 10, 12, 14, 16 HP 22.4 ~ 40.0, 45.0 kW

18, 20, 22, 24 HP 50.4 ~ 67.0 kW

REYQ26P, 28P

REYQ30P, 32P

26, 28 HP 73.0, 78.5 kW

30, 32 HP 85.0, 90.0 kW

REYQ34P, 36P, 38P, 40P

34, 36, 38, 40 HP 95.4 ~ 112 kW

REYQ42P, 44P

REYQ46P, 48P

42, 44 HP 118 ~ 124 kW

46, 48 HP 130, 135 kW

General Information

Si37-701

Combination of Outdoor Units

3. Combination of Outdoor Units Single Use

System Number Capacity of units 8HP 1 10HP 1 12HP 1 14HP 1 16HP 1

8 ●

10

Single Unit 12

14

16

Outdoor Unit Multi Connection Piping Kit (Option)

● ●

— ● ●

Multiple Use

System Number Capacity of units 18HP 2 20HP 2 22HP 2 24HP 2 26HP 2 28HP 2 30HP 2 32HP 2 34HP 3 36HP 3 38HP 3 40HP 3 42HP 3 44HP 3 46HP 3 48HP 3 Note:

General Information

8 ● ●

● ●

Multi Unit Module 10 12 14 ● ● ● ● ●● ● ● ● ● ●

● ● ●●

● ● ●

16

● ● ● ●● ● ● ● ● ●● ●● ●● ●●●

Outdoor Unit Multi Connection Piping Kit (Option)

Heat Recovery: BHFP26P90

Heat Recovery: BHFP26P136

For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required.

5

Model Selection

Si37-701

4. Model Selection VRV III Heat Recovery Series Connectable indoor units number and capacity 8HP

10HP

12HP

14HP

16HP

18HP

20HP

System name

HP

REYQ8P

REYQ10P

REYQ12P

REYQ14P

REYQ16P

REYQ18P

REYQ20P

Outdoor unit 1

REYQ8P

REYQ10P

REYQ12P

REYQ14P

REYQ16P

REMQ8P

REMQ8P

Outdoor unit 2

–

–

–

–

–

REMQ10P

REMQ12P

Outdoor unit 3

–

–

–

–

–

–

–

Total number of connectable indoor units

13

16

19

22

26

29

32

Total capacity of connectable indoor units (kW)

10.0~26.0

12.5~32.5

15.0~39.0

17.5~45.5

20.0~52.0

22.5~58.5

25.0~65.0

22HP

24HP

26HP

28HP

30HP

32HP

34HP

System name

HP

REYQ22P

REYQ24P

REYQ26P

REYQ28P

REYQ30P

REYQ32P

REYQ34P

Outdoor unit 1

REMQ10P

REMQ12P

REMQ10P

REMQ12P

REMQ14P

REMQ16P

REMQ8P

Outdoor unit 2

REMQ12P

REMQ12P

REMQ16P

REMQ16P

REMQ16P

REMQ16P

REMQ10P

Outdoor unit 3

–

–

–

–

–

–

REMQ16P

Total number of connectable indoor units

35

39

42

45

48

52

55

Total capacity of connectable indoor units (kW)

27.5~71.5

30.0~78.0

32.5~84.5

35.0~91.0

37.5~97.5

40.0~104.0

42.5~110.5

36HP

38HP

40HP

42HP

44HP

46HP

48HP

System name

HP

REYQ36P

REYQ38P

REYQ40P

REYQ42P

REYQ44P

REYQ46P

REYQ48P

Outdoor unit 1

REMQ8P

REMQ10P

REMQ12P

REMQ10P

REMQ12P

REMQ14P

REMQ16P

Outdoor unit 2

REMQ12P

REMQ12P

REMQ12P

REMQ16P

REMQ16P

REMQ16P

REMQ16P

Outdoor unit 3

REMQ16P

REMQ16P

REMQ16P

REMQ16P

REMQ16P

57.5~149.5

60.0~156.0

REMQ16P

REMQ16P

Total number of connectable indoor units

58

61

Total capacity of connectable indoor units (kW)

45.0~117.0

47.5~123.5

6

64 50.0~130.0

52.5~136.5

55.0~143.0

General Information

Si37-701

Model Selection

Connectable Indoor Unit Type

Power Supply

Model Name

Ceiling Mounted Cassette Type (Double Flow)

FXCQ

20M

25M

32M

40M

50M

63M

80M

Ceiling Mounted Cassette Type (Multi Flow)

FXFQ

—

25M

32M

40M

50M

63M

80M

600×600 Ceiling Mounted Cassette Type (Multi Flow)

FXZQ

—

—

—

Ceiling Mounted Cassette Corner Type

FXKQ

—

—

63MA

—

FXDQPVE

20P

25P

32P

—

—

—

FXDQPVET

20P

25P

32P

—

—

—

Slim Ceiling Mounted Duct Type

—

125M

—

—

—

—

100M 125M

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

VE

FXDQNAVE

20M8 25M8 32M8 40M8 50M8 25MA 32MA 40MA

20NA 25NA 32NA 40NA 50NA 63NA

FXDQNVET

20N

25N

32N

40N

50N

63N

—

Ceiling Concealed (Duct) Type (Aus. exclusive use)

FXDYQ

—

—

—

—

—

—

80M

100M 125M 145M 180M 200M 250M

Ceiling Mounted Built-In Type

FXSQ

20M

25M

32M

40M

50M

63M

80M

100M 125M

—

—

Ceiling Mounted Duct Type

FXMQ

—

—

—

40MA 50MA 63MA 80MA 100MA 125MA

—

—

Ceiling Suspended Type

FXHQ

—

—

32MA

Wall Mounted Type

—

—

—

V1B

VE

V1

—

200MA 250MA

63MA

—

100MA

—

—

—

—

—

FXAQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

Floor Standing Type

FXLQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

Concealed Floor Standing Type

FXNQ

20MA 25MA 32MA 40MA 50MA 63MA

—

—

—

—

—

—

—

VE

Note: FXDQ has following 2 Series, as shown below. FXDQ-P, N(A)VET: without Drain Pump (For General, Asia: except for EU, China and Australia) FXDQ-P, N(A)VE : with Drain Pump FXZQ : only for EU, Australia FXDYQ : only for Australia

Indoor unit capacity New refrigerant model code Selecting model capacity Equivalent output

P20 type 2.2 kW 0.8HP

P25 type 2.8 kW 1HP

P32 type 3.5 kW 1.25HP

P40 type 4.5 kW 1.6HP

P50 type 5.6 kW 2.0HP

P63 type 7.0 kW 2.5HP

P80 type 9.0 kW 3.2HP

P100 type 11.2 kW 4HP

P125 type 14.0 kW 5HP

P200 type 22.4 kW 8HP

P250 type 28.0 kW 10HP

Use the above tables to determine the capacities of indoor units to be connected. Make sure the total capacity of indoor units connected to each outdoor unit is within the specified value (kW). „ The total capacity of connected indoor units must be within a range of 50 to 130% of the rated capacity of the outdoor unit. „ In some models, it is not possible to connect the maximum number of connectable indoor units. Select models so the total capacity of connected indoor units conforms to the specification.

General Information

7

Model Selection

Si37-701

Differences from Conventional Models Item Compressor

Object Connection of equalizer oil pipe Equalizer oil pipe for multioutdoor-unit system

Workability

Procedure for calculating refrigerant refilling quantity

pipe for outdoor unit Optional accessories Branch connection

8

Differences New model (P Model) z NONE (No particular changes in terms of service) z NONE

Conventional model (M Model) z YES z YES

z Refilling quantity due to piping z Refilling quantity due to piping length - Adjustment quantity length + Adjustment quantity according to models of according to models of outdoor units outdoor units z T branch Type: z Y branch Type: BHFP26P90/136 BHFP26M90+BHFP22M90P BHFP26M135+BHFP22M135P

General Information

Si37-701

Part 2 Specifications 1. Specifications ........................................................................................10 1.1 Outdoor Units .........................................................................................10 1.2 Indoor Units ............................................................................................21 1.3 BS Units .................................................................................................47

Specifications

9

Specifications

Si37-701

1. Specifications 1.1

Outdoor Units

Heat Recovery 50Hz Model Name

m³/h r.p.m

REYQ8PY1(E) 19,400 76,800 22.5 22.4 21,500 85,300 25.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1300×765 Cross Fin Coil Hermetically Sealed Scroll Type 7.88+10.53 3720, 2900

kW

1.0+4.5

kcal / h Btu / h kW kW kcal / h Btu / h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate Casing Color

mm

Soft Start Propellor Fan kW 0.35×2 I/s 3,166 m³/min 190 Drive Direct Drive Liquid Pipe φ9.5 C1220T (Brazing Connection) Suction Gas Pipe φ19.1 C1220T (Brazing Connection) Connecting Pipes High and Low Pressure Gas Pipe φ15.9 C1220T (Brazing Connection) Pressure Equalizer Tube — Mass (Weight) kg 311 High Pressure Switch, Fan Driver Overload Protector, Over Safety Devices Current Relay, Inverter Overload Protector Defrost Method Deicer Capacity Control % 20~100 Refrigerant Name R-410A Refrigerant Charge kg 10.3 Control Electronic Expansion Valve Refrigerator Oil Refer to the nameplate of compressor Installation Manual, Operation Manual, Connection Pipes, Standard Accessories Clamps Drawing No. 4D057563

REYQ10PY1(E) 24,300 96,200 28.2 28.0 27,100 107,000 31.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1300×765 Cross Fin Coil Hermetically Sealed Scroll Type 13.34+10.53 6300, 2900 2.2+4.5 Soft Start Propellor Fan 0.35×2 3,166 190 Direct Drive φ9.5 C1220T (Brazing Connection) φ22.2 C1220T (Brazing Connection) φ19.1 C1220T (Brazing Connection) — 331 High Pressure Switch, Fan Driver Overload Protector, Over Current Relay, Inverter Overload Protector Deicer 14~100 R-410A 10.6 Electronic Expansion Valve Refer to the nameplate of compressor Installation Manual, Operation Manual, Connection Pipes, Clamps 4D057564

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference

: 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

The Reference Number C~: Partly corrected drawings. J~ : Original drawing is Japanese V~: Printing Convenience

10

Specifications

Si37-701

Specifications

Model Name ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ12PY1(E) 29,000 115,000 33.7 33.5 32,300 128,000 37.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1300×765 Cross Fin Coil Hermetically Sealed Scroll Type 13.34+10.53 6300, 2900

REYQ14PY1(E) 35,500 141,000 41.3 40.0 38,700 154,000 45.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1300×765 Cross Fin Coil Hermetically Sealed Scroll Type 16.90+16.90 7980, 7980

kW

3.3+4.5

3.8+3.8

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft Start Propellor Fan kW 0.35×2 I/s 3,500 m³/min 210 Drive Direct Drive Liquid Pipe φ12.7 C1220T (Brazing Connection) φ28.6 C1220T (Brazing Connection) Suction Gas Pipe Connecting Pipes High and Low Pressure Gas Pipe φ19.1 C1220T (Brazing Connection) Pressure Equalizer Tube — Mass (Weight) kg 331 High Pressure Switch, Fan Driver Overload Protector, Over Safety Devices Current Relay, Inverter Overload Protector Defrost Method Deicer Capacity Control % 14~100 Refrigerant Name R-410A Refrigerant Charge kg 10.8 Control Electronic Expansion Valve Refrigerator Oil Refer to the nameplate of compressor Installation Manual, Operation Manual, Connection Pipes, Standard Accessories Clamps Drawing No. 4D057565

Soft Start Propellor Fan 0.75×2 3,916 235 Direct Drive φ12.7 C1220T (Brazing Connection) φ28.6 C1220T (Brazing Connection) φ22.2 C1220T (Brazing Connection) — 339 High Pressure Switch, Fan Driver Overload Protector, Over Current Relay, Inverter Overload Protector Deicer 10~100 R-410A 11.1 Electronic Expansion Valve Refer to the nameplate of compressor Installation Manual, Operation Manual, Connection Pipes, Clamps 4D057566

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

Specifications

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

11

Specifications

Si37-701

Model Name ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ16PY1(E) 40,000 159,000 46.5 45.0 43,000 171,000 50.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1300×765 Cross Fin Coil Hermetically Sealed Scroll Type 16.90+16.90 7980, 7980

kW

4.4+4.4

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

kW I/s m³/min

Drive Liquid Pipe Suction Gas Pipe Connecting Pipes High and Low Pressure Gas Pipe Pressure Equalizer Tube Mass (Weight) kg Safety Devices Defrost Method Capacity Control % Refrigerant Name Refrigerant Charge kg Control Refrigerator Oil Standard Accessories Drawing No.

Soft Start Propellor Fan 0.75×2 4,000 240 Direct Drive φ12.7 C1220T (Brazing Connection) φ28.6 C1220T (Brazing Connection) φ22.2 C1220T (Brazing Connection) — 339 High Pressure Switch, Fan Driver Overload Protector, Over Current Relay, Inverter Overload Protector Deicer 10~100 R-410A 11.1 Electronic Expansion Valve Refer to the nameplate of compressor Installation Manual, Operation Manual, Connection Pipes, Clamps 4D057567

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

12

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ18PY1(E) REMQ8PY1(E)+REMQ10PY1(E) 43,600 173,000 50.7 50.4 48,600 193,000 56.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53)+16.90 (6300, 2900), 7980

REYQ20PY1(E) REMQ8PY1(E)+REMQ12PY1(E) 48,300 192,000 56.2 55.9 53,800 213,000 62.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53)+16.90 (6300, 2900), 7980

kW

(2.2+4.5)×1+4.7×1

(3.5+4.5)×1+4.7×1

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.75×1) I/s 3,000+3,083 m³/min 180+185 Drive Direct drive Liquid Pipe φ15.9 C1220T (Brazing connection) Suction Gas Pipe φ28.6 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ22.2 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 204+254 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 9~100 Refrigerant Name R-410A Refrigerant Charge kg 8.2+9.0 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057568

Soft start Propellor fan (0.75×1)+(0.75×1) 3,000+3,333 180+200 Direct drive φ15.9 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 204+254 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 7~100 R-410A 8.2+9.1 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057569

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

Specifications

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

13

Specifications

Si37-701

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ22PY1(E) REMQ10PY1(E)+REMQ12PY1(E) 53,200 211,000 61.9 61.5 59,300 235,000 69.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53)×2 (6300, 2900)×2

REYQ24PY1(E) REMQ12PY1(E)+REMQ12PY1(E) 58,000 230,000 67.4 67.0 64,500 256,000 75.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53)×2 (6300, 2900)×2

kW

(3.5+4.5)×1+(2.2+4.5)×1

(3.5+4.5)×2

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.75×1) I/s 3,083+3,333 m³/min 185+200 Drive Direct drive Liquid Pipe φ15.9 C1220T (Brazing connection) Suction Gas Pipe φ28.6 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ28.6 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 254+254 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 7~100 Refrigerant Name R-410A Refrigerant Charge kg 9.0+9.1 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057570

Soft start Propellor fan 0.75×2 3,333+3,333 200+200 Direct drive φ15.9 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 254+254 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 6~100 R-410A 9.1+9.1 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057571

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

14

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ26PY1(E) REMQ10PY1(E)+REMQ16PY1(E) 63,100 250,000 73.4 73.0 70,100 278,000 81.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53) (6300, 2900, 2900)+(6300, 2900)

REYQ28PY1(E) REMQ12PY1(E)+REMQ16PY1(E) 67,900 270,000 79.0 78.5 75,300 299,000 87.5 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53) (6300, 2900, 2900)+(6300, 2900)

kW

(3.2+4.5+4.5)×1+(2.2+4.5)×1

(3.2+4.5+4.5)×1+(3.5+4.5)×1

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.35×2) I/s 3,083+3,833 m³/min 185+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ34.9 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ28.6 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 254+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 6~100 Refrigerant Name R-410A Refrigerant Charge kg 9.0+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057572

Soft start Propellor fan (0.75×1)+(0.35×2) 3,333+3,833 200+230 Direct drive φ19.1 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 254+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 6~100 R-410A 9.1+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057808

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

Specifications

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

15

Specifications

Si37-701

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ30PY1(E) REMQ14PY1(E)+REMQ16PY1(E) 73,500 292,000 85.5 85.0 81,700 324,000 95.0 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×2 (6300, 2900, 2900)×2

REYQ32PY1(E) REMQ16PY1(E)+REMQ16PY1(E) 77,800 309,000 90.5 90.0 86,000 341,000 100 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×2 (6300, 2900, 2900)×2

kW

(3.2+4.5+4.5)×1+(1.9+4.5+4.5)×1

(3.2+4.5+4.5)×2

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.35×2)+(0.35×2) I/s 3,833+3,833 m³/min 230+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ34.9 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ28.6 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 334+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 5~100 Refrigerant Name R-410A Refrigerant Charge kg 11.7+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057809

Soft start Propellor fan (0.35×2)×2 3,833+3,833 230+230 Direct drive φ19.1 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 334+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 5~100 R-410A 11.7+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057810

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

16

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ34PY1(E) REMQ8PY1(E)+REMQ10PY1(E)+REMQ16PY1(E) 82,600 328,000 96.0 95.4 92,000 365,000 107 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53)+16.90 (6300, 2900, 2900)+(6300, 2900)+7980

REYQ36PY1(E) REMQ8PY1(E)+REMQ12PY1(E)+REMQ16PY1(E) 87,700 348,000 102 101 97,200 386,000 113 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53)+16.90 (6300, 2900, 2900)+(6300, 2900)+7980

kW

(3.2+4.5+4.5)×1+(2.2+4.5)×1+4.7×1

(3.2+4.5+4.5)×1+(3.5+4.5)×1+4.7×1

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.75×1)+(0.35×2) I/s 3,000+3,083+3,833 m³/min 180+185+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ34.9 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ28.6 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 204+254+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 5~100 Refrigerant Name R-410A Refrigerant Charge kg 8.2+9.0+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057811

Soft start Propellor fan (0.75×1)+(0.75×1)+(0.35×2) 3,000+3,333+3,833 180+200+230 Direct drive φ19.1 C1220T (Brazing connection) φ41.3 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 204+254+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 5~100 R-410A 8.2+9.1+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057812

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

Specifications

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

17

Specifications

Si37-701

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ38PY1(E) REMQ10PY1(E)+REMQ12PY1(E)+REMQ16PY1(E) 92,900 368,000 108 107 102,000 406,000 119 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53)×2 (6300, 2900, 2900)+(6300, 2900)×2

REYQ40PY1(E) REMQ12PY1(E)+REMQ12PY1(E)+REMQ16PY1(E) 97,200 386,000 113 112 108,000 427,000 125 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×930×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)+(13.34+10.53)×2 (6300, 2900, 2900)+(6300, 2900)×2

kW

(3.2+4.5+4.5)×1+(3.5+4.5)×1+(2.2+4.5)×1

(3.2+4.5+4.5)×1+(3.5+4.5)×2

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.75×1)+(0.35×2) I/s 3,083+3,333+3,833 m³/min 185+200+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ41.3 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ34.9 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 254+254+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 5~100 Refrigerant Name R-410A Refrigerant Charge kg 9.0+9.1+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057813

Soft start Propellor fan (0.75×2)+(0.35×2) 3,333+3,333+3,833 200+200+230 Direct drive φ19.1 C1220T (Brazing connection) φ41.3 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 254+254+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 4~100 R-410A 9.1+9.1+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057814

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

18

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ42PY1(E) REMQ10PY1(E)+REMQ16PY1(E)+REMQ16PY1(E) 102,000 406,000 119 118 114,000 450,000 132 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×2+(13.34+10.53) (6300, 2900, 2900)×2+(6300, 2900)

REYQ44PY1(E) REMQ12PY1(E)+REMQ16PY1(E)+REMQ16PY1(E) 108,000 427,000 125 124 119,000 471,000 138 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×930×765+1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×2+(13.34+10.53) (6300, 2900, 2900)×2+(6300, 2900)

kW

(3.2+4.5+4.5)×1+(2.2+4.5)×1

(3.2+4.5+4.5)×2+(3.5+4.5)×1

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.75×1)+(0.35×2)×2 I/s 3,083+3,833+3,833 m³/min 185+230+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ41.3 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ34.9 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 254+334+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 4~100 Refrigerant Name R-410A Refrigerant Charge kg 9.0+11.7+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057815

Soft start Propellor fan (0.75×1)+(0.35×2)×2 3,333+3,833+3,833 200+230+230 Direct drive φ19.1 C1220T (Brazing connection) φ41.3 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 254+334+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 4~100 R-410A 9.1+11.7+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057816

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

Specifications

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

19

Specifications

Si37-701

Model Name (Combination Unit) Model Name (Independent Unit) ★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Y1 Type Y1E Type Dimensions: (H×W×D) Heat Exchanger Type Piston Displacement Number of Revolutions Comp. Motor Output×Number of Units Starting Method Type Motor Output Fan Air Flow Rate

m³/h r.p.m

REYQ46PY1(E) REMQ14PY1(E)+REMQ16PY1(E)+REMQ16PY1(E) 113,000 447,000 131 130 124,000 495,000 145 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1240×765+1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×3 (6300, 2900, 2900)×3

REYQ48PY1(E) REMQ16PY1(E)+REMQ16PY1(E)+REMQ16PY1(E) 117,000 464,000 136 135 129,000 512,000 150 Ivory White 5Y7.5/1 Light Camel 2.5Y6.5/1.5 1680×1240×765+1680×1240×765+1680×1240×765 Cross fin coil Hermetically sealed scroll type (13.34+10.53+10.53)×3 (6300, 2900, 2900)×3

kW

(3.2+4.5+4.5)×2+(1.9+4.5+4.5)×1

(3.2+4.5+4.5)×3

kcal / h Btu / h kW kW kcal / h Btu / h kW

Casing Color

mm

Soft start Propellor fan kW (0.35×2)+(0.35×2)×2 I/s 3,833+3,833+3,833 m³/min 230+230+230 Drive Direct drive Liquid Pipe φ19.1 C1220T (Brazing connection) Suction Gas Pipe φ41.3 C1220T (Brazing connection) Connecting Pipes High and Low Pressure Gas Pipe φ34.9 C1220T (Brazing connection) Pressure Equalizer Tube φ19.1 C1220T (Brazing connection) Mass (Weight) kg 334+334+334 High pressure switch, fan driver overload protector, Safety Devices overcurrent relay, inverter overload protector Defrost Method Deicer Capacity Control % 4~100 Refrigerant Name R-410A Refrigerant Charge kg 11.7+11.7+11.7 Control Electronic expansion valve Refrigerator Oil Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Standard Accessories Cramps Drawing No. 4D057817

Soft start Propellor fan (0.35×2)×3 3,833+3,833+3,833 230+230+230 Direct drive φ19.1 C1220T (Brazing connection) φ41.3 C1220T (Brazing connection) φ34.9 C1220T (Brazing connection) φ19.1 C1220T (Brazing connection) 334+334+334 High pressure switch, fan driver overload protector, overcurrent relay, inverter overload protector Deicer 4~100 R-410A 11.7+11.7+11.7 Electronic expansion valve Refer to the nameplate of compressor Installation manual, Operation manual, Connection pipes, Cramps 4D057818

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level

difference : 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp. : 35°CDB / Equivalent piping length : 7.5m, level difference : 0m. ★3 Indoor temp. : 20°CDB / outdoor temp. : 7°CDB, 6°CWB / Equivalent piping length : 7.5m, level difference : 0m. 4 The units with anti-corrosion treatment will be available as standard. Please specify the suffix “E” as REYQ8PY1E.

20

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

1.2

Specifications

Indoor Units

Ceiling Mounted Cassette Type (Double Flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXCQ40MVE

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 305×775×600 2×10×1.5 2×0.100 D17K2AB1 Sirocco Fan

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 305×990×600 2×10×1.5 2×0.145 2D17K1AA1 Sirocco Fan

10×1

15×1

15×1

20×1

116/83 7/5 247/177 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ6.4 (Flare Connection) φ12.7 (Flare Connection)

150/108 9/6.5 318/230 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ6.4 (Flare Connection) φ12.7 (Flare Connection)

150/108 9/6.5 318/230 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ6.4 (Flare Connection) φ12.7 (Flare Connection)

200/150 12/9 424/318 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ6.4 (Flare Connection) φ12.7 (Flare Connection)

Temperature Control

kg 220V dBA 240V

Safety Devices Refrigerant Control Connectable outdoor unit Model Decoration Panels (Option)

FXCQ32MVE

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 305×775×600 2×10×1.5 2×0.100 D17K2AB1 Sirocco Fan

W

Sound Absorbing Thermal Insulation Material Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm

★5 Sound Level (H/L)

FXCQ25MVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 305×775×600 2×10×1.5 2×0.100 D17K2AA1 Sirocco Fan

I/s m³/min cfm

Drive

Mass (Weight)

FXCQ20MVE

VP25

mm

Air Filter Weight

kg

Standard Accessories

Drawing No.

VP25

Dia. 32 ( External Internal Dia. 25 )

Dia. 32 ( External Internal Dia. 25 )

26 32/27 34/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

26 34/28 36/30 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

26 34/28 36/30 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

31 34/29 37/32 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

BYBC32G-W1

BYBC32G-W1

White (10Y9/0.5) 53×1,030×680 Resin Net (with Mold Resistant) 8 Operation Manual, Installation Manual, Paper Pattern for Installation, Washer for Hanging Brackets, Clamp Metal, Drain Hose, Insulation for Fitting, Washer Fixing Plates, Sealing Pads, Clamps, Screws, Washers.

White (10Y9/0.5) White (10Y9/0.5) 53×1,030×680 53×1,030×680 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 8 8 Operation Manual, Operation Manual, Installation Manual, Paper Installation Manual, Paper Pattern for Installation, Pattern for Installation, Washer for Hanging Washer for Hanging Brackets, Clamp Metal, Brackets, Clamp Metal, Drain Hose, Insulation for Drain Hose, Insulation for Fitting, Washer Fixing Fitting, Washer Fixing Plates, Sealing Pads, Plates, Sealing Pads, Clamps, Screws, Washers. Clamps, Screws, Washers. C: 3D039413

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

VP25

Dia. 32 ( External Internal Dia. 25 )

BYBC32G-W1

Panel Color Dimensions: (H×W×D)

VP25

Dia. 32 ( External Internal Dia. 25 )

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

BYBC50G-W1 White (10Y9/0.5) 53×1,245×680 Resin Net (with Mold Resistant) 8.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Washer for Hanging Brackets, Clamp Metal, Drain Hose, Insulation for Fitting, Washer Fixing Plates, Sealing Pads, Clamps, Screws, Washers.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

21

Specifications

Si37-701

Ceiling Mounted Cassette Type (Double Flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXCQ125MVE

8,000 31,700 9.3 9.0 8,600 34,100 10.0 Galvanized Steel Plate 305×1,665×600 2×10×1.5 2×0.287 3D17K2AA1 Sirocco Fan

12,500 49,500 14.5 14.0 13,800 54,600 16.0 Galvanized Steel Plate 305×1,665×600 2×10×1.5 2×0.287 3D17K2AB1 Sirocco Fan

20×1

30×1

50×1

85×1

200/150 12/9 424/318 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 32 34/29 37/32 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

275/216 16.5/13 582/459 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 35 37/32 39/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

433/350 26/21 918/741 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 47 39/34 41/36 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

550/416 33/25 1,165/883 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool/Urethane Foam φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 48 44/38 46/40 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

BYBC63G-W1

BYBC125G-W1

BYBC125G-W1

Temperature Control

kg 220V dBA 240V

Safety Devices Refrigerant Control Connectable outdoor unit Model Decoration Panels (Option)

FXCQ80MVE

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 305×1,175×600 2×10×1.5 2×0.184 2D17K2AA1VE Sirocco Fan

W

Sound Absorbing Thermal Insulation Material Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm

★5 Sound Level (H/L)

FXCQ63MVE

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 305×990×600 2×10×1.5 2×0.145 2D17K1AA1 Sirocco Fan

I/s m³/min cfm

Drive

Mass (Weight)

FXCQ50MVE

(

)

BYBC50G-W1

Panel Color Dimensions: (H×W×D)

mm

Air Filter Weight

kg

Standard Accessories

Drawing No.

White (10Y9/0.5) 53×1,245×680 Resin Net (with Mold Resistant) 8.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Washer for Hanging Brackets, Clamp Metal, Drain Hose, Insulation for Fitting, Washer Fixing Plates, Sealing Pads, Clamps, Screws, Washers.

(

)

(

)

White (10Y9/0.5) White (10Y9/0.5) 53×1,430×680 53×1,920×680 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 9.5 12 Operation Manual, Operation Manual, Installation Manual, Paper Installation Manual, Paper Pattern for Installation, Pattern for Installation, Washer for Hanging Washer for Hanging Brackets, Clamp Metal, Brackets, Clamp Metal, Drain Hose, Insulation for Drain Hose, Insulation for Fitting, Washer Fixing Fitting, Washer Fixing Plates, Sealing Pads, Plates, Sealing Pads, Clamps, Screws, Washers. Clamps, Screws, Washers. C: 3D039413

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

22

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

(

)

White (10Y9/0.5) 53×1,920×680 Resin Net (with Mold Resistant) 12 Operation Manual, Installation Manual, Paper Pattern for Installation, Washer for Hanging Brackets, Clamp Metal, Drain Hose, Insulation for Fitting, Washer Fixing Plates, Sealing Pads, Clamps, Screws, Washers.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Ceiling Mounted Cassette Type (Multi-flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXFQ40MVE

FXFQ50MVE

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 246×840×840 2×8×1.2 0.363 QTS46D14M Turbo Fan

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 246×840×840 2×8×1.2 0.363 QTS46D14M Turbo Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 246×840×840 2×8×1.2 0.363 QTS46D14M Turbo Fan

W

30×1

30×1

30×1

30×1

216/166 13/10 459/353 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 24 30/27 Fuse Electronic Expansion Valve R-410A P Series

216/166 13/10 459/353 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 24 30/27 Fuse Electronic Expansion Valve R-410A P Series

250/183 15/11 530/388 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 24 31/27 Fuse Electronic Expansion Valve R-410A P Series

266/183 16/11 565/388 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 24 32/27 Fuse Electronic Expansion Valve R-410A P Series

BYCP125D-W1

BYCP125D-W1

Temperature Control Sound Absorbing Thermal Insulation Material Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm kg dBA

Model Decoration Panels (Option)

FXFQ32MVE

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 246×840×840 2×8×1.2 0.363 QTS46D14M Turbo Fan

I/s m³/min cfm

Drive

Mass (Weight) ★5 Sound Level (H/L) (220V-240V) Safety Devices Refrigerant Control Connectable outdoor unit

FXFQ25MVE

(

)

BYCP125D-W1

Panel Color Dimensions: (H×W×D)

mm

Air Filter Weight

kg

Standard Accessories

Drawing No.

White (10Y9/0.5) 45×950×950 Resin Net (with Mold Resistant) 5.5 Operation manual, Installation manual, Paper pattern for installation, Drain hose, Clamp metal, Washer fixing plate, Sealing pads, Clamps, Screws, Washer for hanging bracket, Insulation for fitting.

(

)

(

)

White (10Y9/0.5) White (10Y9/0.5) 45×950×950 45×950×950 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 5.5 5.5 Operation manual, Operation manual, Installation manual, Paper Installation manual, Paper pattern for installation, Drain pattern for installation, Drain hose, Clamp metal, Washer hose, Clamp metal, Washer fixing plate, Sealing pads, fixing plate, Sealing pads, Clamps, Screws, Washer for Clamps, Screws, Washer for hanging bracket, Insulation hanging bracket, Insulation for fitting. for fitting. C: 3D038812

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

(

)

BYCP125D-W1 White (10Y9/0.5) 45×950×950 Resin Net (with Mold Resistant) 5.5 Operation manual, Installation manual, Paper pattern for installation, Drain hose, Clamp metal, Washer fixing plate, Sealing pads, Clamps, Screws, Washer for hanging bracket, Insulation for fitting.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

23

Specifications

Si37-701

Ceiling Mounted Cassette Type (Multi-flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXFQ80MVE

FXFQ100MVE

FXFQ125MVE

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 246×840×840 2×10×1.2 0.454 QTS46D14M Turbo Fan

8,000 31,700 9.3 9.0 8,600 34,100 10.0 Galvanized Steel Plate 246×840×840 2×10×1.2 0.454 QTS46D14M Turbo Fan

10,000 39,600 11.6 11.2 10,800 42,700 12.5 Galvanized Steel Plate 288×840×840 2×12×1.2 0.544 QTS46C17M Turbo Fan

12,500 49,500 14.5 14.0 13,800 54,600 16.0 Galvanized Steel Plate 288×840×840 2×12×1.2 0.544 QTS46C17M Turbo Fan

W

30×1

30×1

120×1

120×1

I/s m³/min cfm

308/233 18.5/14 653/494 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 25 33/28 Fuse Electronic Expansion Valve R-410A P Series

333/250 20/15 706/530 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 25 36/31 Fuse Electronic Expansion Valve R-410A P Series

433/350 26/21 918/741 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 29 39/33 Fuse Electronic Expansion Valve R-410A P Series

500/400 30/24 1,059/847 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyurethane Form φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 29 42/36 Fuse Electronic Expansion Valve R-410A P Series

BYCP125D-W1

BYCP125D-W1

Drive Temperature Control Sound Absorbing Thermal Insulation Material Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm Mass (Weight) ★5 Sound Level (H/L) (220V-240V) Safety Devices Refrigerant Control Connectable outdoor unit

kg dBA

Model Decoration Panels (Option)

FXFQ63MVE

(

)

BYCP125D-W1

Panel Color Dimensions: (H×W×D)

mm

Air Filter Weight

kg

Standard Accessories

Drawing No.

White (10Y9/0.5) 45×950×950 Resin Net (with Mold Resistant) 5.5 Operation manual, Installation manual, Paper pattern for installation, Drain hose, Clamp metal, Washer fixing plate, Sealing pads, Clamps, Screws, Washer for hanging bracket, Insulation for fitting.

(

)

(

)

White (10Y9/0.5) White (10Y9/0.5) 45×950×950 45×950×950 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 5.5 5.5 Operation manual, Operation manual, Installation manual, Paper Installation manual, Paper pattern for installation, Drain pattern for installation, Drain hose, Clamp metal, Washer hose, Clamp metal, Washer fixing plate, Sealing pads, fixing plate, Sealing pads, Clamps, Screws, Washer for Clamps, Screws, Washer for hanging bracket, Insulation hanging bracket, Insulation for fitting. for fitting. C: 3D038812

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

24

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

(

)

BYCP125D-W1 White (10Y9/0.5) 45×950×950 Resin Net (with Mold Resistant) 5.5 Operation manual, Installation manual, Paper pattern for installation, Drain hose, Clamp metal, Washer fixing plate, Sealing pads, Clamps, Screws, Washer for hanging bracket, Insulation for fitting.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

600×600 Ceiling Mounted Cassette Type (Multi Flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

55×1

55×1

55×1

150/116 9/7 318/247 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene/ Foamed Polyethylene φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 External Dia. 26 Internal Dia. 20 18 30/25 32/26 47 Fuse Electronic Expansion Valve R-410A M(A) Series

158/125 9.5/7.5 335/265 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene/ Foamed Polyethylene φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 External Dia. 26 Internal Dia. 20 18 32/36 34/28 49 Fuse Electronic Expansion Valve R-410A M(A) Series

Liquid Pipes Gas Pipes

mm mm

Drain Pipe

mm

(

kg 220V dBA 240V dBA 220V

Sound Power Safety Devices Refrigerant Control Connectable outside unit Model Decoration Panels (Option)

3,150 12,500 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 260×575×575 2×10×1.5 0.269 QTS32C15M Turbo Fan

150/116 9/7 318/247 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene/ Foamed Polyethylene φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 External Dia. 26 Internal Dia. 20 18 30/25 32/26 47 Fuse Electronic Expansion Valve R-410A M(A) Series

Sound Absorbing Thermal Insulation Material

★5 Sound Level (H/L)

FXZQ32M8V1B

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 260×575×575 2×10×1.5 0.269 QTS32C15M Turbo Fan

W

Temperature Control

Mass (Weight)

FXZQ25M8V1B

2,000 7,900 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 260×575×575 2×10×1.5 0.269 QTS32C15M Turbo Fan

I/s m³/min cfm

Drive

Piping Connections

FXZQ20M8V1B

Panel Color Dimensions: (H×W×D)

mm

Air Filter Weight

kg

Standard Accessories

)

(

)

(

)

BYFQ60BW1

BYFQ60BW1

BYFQ60BW1

White (Ral 9010) 55×700×700 Resin Net (with Mold Resistant) 2.7 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Washer Fixing Plate, Sealing Pads, Clamps, Screws, Washer for Hanging Bracket, Insulation for Fitting.

White (Ral 9010) 55×700×700 Resin Net (with Mold Resistant) 2.7 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Washer Fixing Plate, Sealing Pads, Clamps, Screws, Washer for Hanging Bracket, Insulation for Fitting. C: 3D038929A

White (Ral 9010) 55×700×700 Resin Net (with Mold Resistant) 2.7 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Washer Fixing Plate, Sealing Pads, Clamps, Screws, Washer for Hanging Bracket, Insulation for Fitting.

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outside temp.: 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outside temp.: 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

★3 Indoor temp. : 20°CDB / outside temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference;

0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. ★5 Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Specifications

25

Specifications

Si37-701

600×600 Ceiling Mounted Cassette Type (Multi Flow) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

★5 Sound Level (H/L)

Sound Power Safety Devices Refrigerant Control Connectable outside unit Model Panel Color Decoration Dimensions: (H×W×D) Panels (Option) Air Filter

FXZQ50M8V1B

4,000 15,900 4.7 4.5 4,300 17,000 5.0 Galvanized Steel Plate 260×575×575 2×10×1.5 0.269 QTS32C15M Turbo Fan

5,000 19,900 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 260×575×575 2×10×1.5 0.269 QTS32C15M Turbo Fan

W

55×1

55×1

I/s m³/min cfm

183/133 11/8 388/282 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene/Foamed Polyethylene φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 External Dia. 26 Internal Dia. 20

233/166 14/10 494/353 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene/Foamed Polyethylene φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 External Dia. 26 Internal Dia. 20

Drive Temperature Control Sound Absorbing Thermal Insulation Material Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm Mass (Weight)

FXZQ40M8V1B

kg 220V dBA 240V dBA 220V

mm

Weight

kg

Standard Accessories Drawing No.

(

)

(

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outside temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

26

)

18 18 36/28 41/33 36/28 41/33 53 58 Fuse Fuse Electronic Expansion Valve Electronic Expansion Valve R-410A M(A) Series R-410A M(A) Series BYFQ60BW1 BYFQ60BW1 White (Ral 9010) White (Ral 9010) 55×700×700 55×700×700 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 2.7 2.7 Operation Manual, Installation Manual, Paper Pattern for Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Washer Fixing Plate, Installation, Drain Hose, Clamp Metal, Washer Fixing Plate, Sealing Pads, Clamps, Screws, Washer for Hanging Sealing Pads, Clamps, Screws, Washer for Hanging Bracket, Insulation for Fitting. Bracket, Insulation for Fitting. C: 3D038929A

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outside temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outside temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Ceiling Mounted Cassette Corner Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

mm mm m²

FXKQ25MAVE

FXKQ32MAVE

FXKQ40MAVE

FXKQ63MAVE

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 215×1,110×710 2×11×1.75 0.180 3D12H1AN1V1 Sirocco Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 215×1,110×710 2×11×1.75 0.180 3D12H1AN1V1 Sirocco Fan

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 215×1,110×710 2×11×1.75 0.180 3D12H1AP1V1 Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 215×1,310×710 3×11×1.75 0.226 4D12H1AJ1V1 Sirocco Fan

15×1

15×1

20×1

W

45×1

I/s m³/min cfm

183/150 183/150 216/166 Air Flow Rate (H/L) 11/9 11/9 13/10 388/318 388/318 459/353 Drive Direct Drive Direct Drive Direct Drive Microprocessor Thermostat Microprocessor Thermostat Microprocessor Thermostat Temperature Control for Cooling and Heating for Cooling and Heating for Cooling and Heating Sound Absorbing Thermal Insulation Material Polyethylene Foam Polyethylene Foam Polyethylene Foam Liquid Pipes mm φ6.4 (Flare Connection) φ6.4 (Flare Connection) φ6.4 (Flare Connection) Gas Pipes mm φ12.7 (Flare Connection) φ12.7 (Flare Connection) φ12.7 (Flare Connection) Piping Connections VP25 VP25 VP25 Drain Pipe mm External Dia. 32 External Dia. 32 External Dia. 32 Internal Dia. 25 Internal Dia. 25 Internal Dia. 25 Mass (Weight) kg 31 31 31 220V 38/33 38/33 40/34 ★5 Sound Level (H/L) dBA 240V 40/35 40/35 42/36 Fuse, Fuse, Fuse, Safety Devices Thermal Fuse for Fan Motor Thermal Fuse for Fan Motor Thermal Fuse for Fan Motor Refrigerant Control Electronic Expansion Valve Electronic Expansion Valve Electronic Expansion Valve Connectable Outdoor Units R-410A P Series R-410A P Series R-410A P Series

(

Model Decoration Panels (Option)

)

BYK45FJW1

Panel Color Dimensions: (H×W×D)

mm

Air Filter Weight

kg

Standard Accessories

Drawing No.

White (10Y9/0.5) 70×1,240×800 Resin Net (with Mold Resistant) 8.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers, Positioning Jig for Installation, Insulation for Hanger Bracket, Air Outlet Blocking Pad.

(

)

BYK45FJW1

(

)

BYK45FJW1

White (10Y9/0.5) White (10Y9/0.5) 70×1,240×800 70×1,240×800 Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 8.5 8.5 Operation Manual, Operation Manual, Installation Manual, Paper Installation Manual, Paper Pattern for Installation, Drain Pattern for Installation, Drain Hose, Clamp Metal, Hose, Clamp Metal, Insulation for Fitting, Sealing Insulation for Fitting, Sealing Pads, Clamps, Screws, Pads, Clamps, Screws, Washers, Positioning Jig for Washers, Positioning Jig for Installation, Insulation for Installation, Insulation for Hanger Bracket, Air Outlet Hanger Bracket, Air Outlet Blocking Pad. Blocking Pad. C: 3D038813A

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1m in front of the unit and 1m downward. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

300/250 18/15 635/530 Direct Drive Microprocessor Thermostat for Cooling and Heating Polyethylene Foam φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 34 42/37 44/39 Fuse, Thermal Fuse for Fan Motor Electronic Expansion Valve R-410A P Series

(

)

BYK71FJW1 White (10Y9/0.5) 70×1,440×800 Resin Net (with Mold Resistant) 9.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers, Positioning Jig for Installation, Insulation for Hanger Bracket, Air Outlet Blocking Pad.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

27

Specifications

Si37-701

Slim Ceiling Mounted Duct Type (with Drain Pump) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L) External Static Pressure Drive

mm mm m²

FXDQ20NAVE

FXDQ25NAVE

FXDQ32NAVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

W

62×1

62×1

62×1

I/s m³/min cfm Pa

158/125 9.5/7.5 335/265 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

158/125 9.5/7.5 335/265 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter C: 3D051253

175/141 10.5/8.5 371/300 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm Mass (Weight)

kg dBA

★6 Sound Level (H/L)

Safety Devices Refrigerant Control

Standard Accessories

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5 ★6

28

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Slim Ceiling Mounted Duct Type (with Drain Pump) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L) External Static Pressure Drive

mm mm m²

FXDQ40NAVE

FXDQ50NAVE

FXDQ63NAVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 200×900×620 3×12×1.5 0.176 — Sirocco Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 200×900×620 3×12×1.5 0.176 — Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 200×1100×620 3×12×1.5 0.227 — Sirocco Fan

W

62×1

130×1

130×1

I/s m³/min cfm Pa

175/141 10.5/8.5 371/300 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 27 34/30 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

208/166 12.5/10.0 441/353 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 28 35/31 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter C: 3D051253

275/216 16.5/13.0 583/459 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 31 36/32 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm Mass (Weight)

kg dBA

★6 Sound Level (H/L)

Safety Devices Refrigerant Control

Standard Accessories

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5 ★6

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

29

Specifications

Si37-701

Slim Ceiling Mounted Duct Type (without Drain Pump) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L) External Static Pressure Drive

mm mm m²

FXDQ20NVET

FXDQ25NVET

FXDQ32NVET

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

W

62×1

62×1

62×1

m³/min Pa

9.5/7.5 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

9.5/7.5 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

10.5/8.5 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter 3D049693

26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Piping Gas Pipes mm Connections Drain Pipe mm Mass (Weight)

kg dBA

★6 Sound Level (H/L)

Safety Devices Refrigerant Control

Standard Accessories

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

★3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference;

0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. ★5 External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. ★6 The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

30

Specifications

Si37-701

Specifications

Slim Ceiling Mounted Duct Type (without Drain Pump) Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L) External Static Pressure Drive

mm mm m²

FXDQ40NVET

FXDQ50NVET

FXDQ63NVET

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 200×900×620 3×12×1.5 0.176 — Sirocco Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 200×900×620 3×12×1.5 0.176 — Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 200×1100×620 3×12×1.5 0.227 — Sirocco Fan

W

62×1

130×1

130×1

m³/min Pa

10.5/8.5 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

12.5/10.0 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

16.5/13.0 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene Removal / Washable / Mildew Proof φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20)

27 34/30 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

28 35/31 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter 3D049693

31 36/32 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Piping Gas Pipes mm Connections Drain Pipe mm Mass (Weight)

kg dBA

★6 Sound Level (H/L)

Safety Devices Refrigerant Control

Standard Accessories

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

★3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference;

0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. ★5 External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. ★6 The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

Specifications

31

Specifications

Si37-701

Slim Ceiling Mounted Duct Type (PVE: with Drain Pump PVET: without Drain Pump) FXDQ20PVE FXDQ20PVET 2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

FXDQ25PVE FXDQ25PVET 2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

FXDQ32PVE FXDQ32PVET 3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 200×900×620 2×12×1.5 0.176 — Sirocco Fan

W

62×1

62×1

62×1

I/s m³/min cfm Pa

133/106 9.5/7.5 282/226 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating

133/106 9.5/7.5 282/226 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating

133/106 10.5/8.5 282/226 44-15 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating

Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter C: 3D052136

Foamed Polyethylene Removal / Washable / Mildew Proof φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 26 33/29 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Warranty, Drain Hose, Sealing Pads, Clamps, Washers, Insulation for Fitting, Clamp Metal, Washer Fixing Plate, Screws for Duct Flanges, Air Filter

Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L) External Static Pressure Drive

mm mm m²

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes mm Piping Connections Drain Pipe mm Mass (Weight)

kg dBA

★6 Sound Level (H/L)

Safety Devices Refrigerant Control

Standard Accessories

Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5 ★6

32

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Ceiling Concealed (Duct) Type (Australia exclusive use) Model

FXDYQ80MV1 kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Type Motor Output Fan

Air Flow Rate External Static Pressure Drive

mm mm m² W l/s cfm Pa

Temperature Control Sound Absorbing Thermal Insulation Material ★6 Air Filter

Piping Connections

Liquid Pipes Gas Pipes

mm mm

Drain Pipe

mm

Mass (Weight) ★7 Sound Level (240V)

kg dBA

Safety Devices Refrigerant Control Standard Accessories Drawing No.

8,000 31,700 9.3 9.0 8,600 34,100 10.0 Galvanized Steel Plate 360×1,168×869 2×18×1.5 0.284 Twin Sirocco Fan 290 590 1250 130 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene — φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 (External Dia. 32 Internal Dia. 25) 52 45 Fuse for PCB, Fuse for Fan Motor, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Hose, Clamps

FXDYQ100MV1

FXDYQ125MV1

10,000 12,500 39,600 49,500 11.6 14.5 11.2 14.0 10,800 13,800 42,700 54,600 12.5 16.0 Galvanized Steel Plate Galvanized Steel Plate 360×1,478×899 360×1,478×899 2×18×1.5 3×18×1.5 0.435 0.435 Twin Sirocco Fan Twin Sirocco Fan 490 490 815 925 1726 1959 130 ★5 100 ★5 Direct Drive Direct Drive Microprocessor Thermostat Microprocessor Thermostat for Cooling and Heating for Cooling and Heating Foamed Polyethylene Foamed Polyethylene — — φ9.5 (Flare Connection) φ9.5 (Flare Connection) φ15.9 (Flare Connection) φ15.9 (Flare Connection) VP25 VP25 (External Dia. 32 Internal Dia. 25) (External Dia. 32 Internal Dia. 25) 61 65 46 48 Fuse for PCB, Fuse for PCB, Fuse for Fan Motor, Fuse for Fan Motor, Thermal Protector for Fan Motor Thermal Protector for Fan Motor Electronic Expansion Valve Electronic Expansion Valve Operation Manual, Operation Manual, Installation Manual, Installation Manual, Drain Hose, Hose, Clamps Drain Hose, Hose, Clamps 4PDA0355

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5 ★6 ★7

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. Air filter is not a standard accessory. A suitable field supplied filter must be installed in the return air duct. The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

FXDYQ145MV1 14,500 57,700 16.9 16.2 15,900 63,100 18.5 Galvanized Steel Plate 360×1,478×899 3×18×1.5 0.435 Twin Sirocco Fan 655 1070 2266 130 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene — φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP25 (External Dia. 32 Internal Dia. 25) 66 51 Fuse for PCB, Fuse for Fan Motor, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Hose, Clamps

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

33

Specifications

Si37-701

Model

FXDYQ180MV1 kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Type Motor Output Fan

Air Flow Rate External Static Pressure Drive

mm mm m² W l/s cfm Pa

Temperature Control Sound Absorbing Thermal Insulation Material ★6 Air Filter Liquid Pipes mm Piping Gas Pipes mm Connections Drain Pipe mm Mass (Weight) kg ★7 Sound Level (240V) dBA Safety Devices Refrigerant Control Standard Accessories

17,700 70,300 20.6 20.0 19,300 76,400 22.4 Galvanized Steel Plate 500×1,210×910 2×22×2.0 0.443 Twin Sirocco Fan 700 1,180 2500 150 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene — φ9.5 (Brazing Connection) φ19.1 (Brazing Connection) BSP 3/4 inch internal thread 77 51 Fuse for PCB, Fuse for Fan Motor, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Hose, Clamps

Drawing No.

FXDYQ200MV1 19,800 78,500 23.0 22.4 21,500 85,300 25.0 Galvanized Steel Plate 500×1,210×910 3×22×2.0 0.443 Twin Sirocco Fan 750 1,200 2542 180 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene — φ9.5 (Brazing Connection) φ19.1 (Brazing Connection) BSP 3/4 inch internal thread 79 51 Fuse for PCB, Fuse for Fan Motor, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Hose, Clamps —

FXDYQ250MV1 24,800 98,300 28.8 28.0 27,000 107,500 31.5 Galvanized Steel Plate 500×1,410×910 3×22×2.0 0.54 Twin Sirocco Fan 1,100 1,400 2965 200 ★5 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polyethylene — φ9.5 (Brazing Connection) φ22.2 (Brazing Connection) BSP 3/4 inch internal thread 98 51 Fuse for PCB, Fuse for Fan Motor, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Hose, Clamps

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m. ★2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level

difference: 0m.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

★3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference;

0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. ★5 External static pressure is changeable to set by the remote controller this pressure means “High static pressure - Standard static pressure”. ★6 Air filter is not a standard accessory. A suitable field supplied filter must be installed in the return air duct. ★7 The operation sound levels are the conversion values in anechoic chamber. In practice, the sound tend to be larger than the specified values due to ambient noise or reflections. When the place of suction is changed to the bottom suction, the sound level will increase by approx. 5dBA.

34

Specifications

Si37-701

Specifications

Ceiling Mounted Built-in Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

Air Flow Rate (H/L)

mm mm m²

50×1

50×1

50×1

150/108 9/6.5 318/230

158/116 9.5/7 335/247

Pa

88-39-20

88-39-20

64-39-15

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ6.4 (Flare Connection)

mm

φ12.7 (Flare Connection)

φ12.7 (Flare Connection)

φ12.7 (Flare Connection)

mm

VP25 (External Dia. 32 Internal Dia. 25) 30 37/32 39/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 30 37/32 39/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 30 38/32 40/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes Drain Pipe

kg 220V dBA 240V

Safety Devices Refrigerant Control Connectable outdoor unit Model Decoration Panel (Option)

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 300×550×800 3×14×1.75 0.088 D18H3A Sirocco Fan

150/108 9/6.5 318/230

Temperature Control

★6 Sound Level (H/L)

FXSQ32MVE

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 300×550×800 3×14×1.75 0.088 D18H3A Sirocco Fan

W

pressure Drive

Mass (Weight)

FXSQ25MVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 300×550×800 3×14×1.75 0.088 D18H3A Sirocco Fan

I/s m³/min cfm

★4 External static

Piping Connections

FXSQ20MVE

Panel Color Dimensions: (H×W×D) Weight

mm kg

Standard Accessories Drawing No.

BYBS32DJW1

BYBS32DJW1

BYBS32DJW1

White (10Y9/0.5) 55×650×500 3 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

White (10Y9/0.5) 55×650×500 3 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers. C: 3D039431

White (10Y9/0.5) 55×650×500 3 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3 ★4

5 ★6

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) External static pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard -Low static pressure”. Capacities are net, including a deduction for cooling (an additional for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5m downward from the unit center. These values are normally somewhat higher during actual operation as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

35

Specifications

Si37-701

Ceiling Mounted Built-in Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

Air Flow Rate (H/L) ★4 External static

pressure Drive

mm mm m²

65×1

85×1

125×1

250/183 15/11 530/388

350/258 21/15.5 741/547

Pa

88-49-20

88-59-29

88-49-20

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ9.5 (Flare Connection)

mm

φ12.7 (Flare Connection)

φ12.7 (Flare Connection)

φ15.9 (Flare Connection)

mm

VP25 (External Dia. 32 Internal Dia. 25) 30 38/32 40/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 31 41/36 43/38 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 41 42/35 44/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

Safety Devices Refrigerant Control Connectable outdoor unit Model Decoration Panel (Option)

Panel Color Dimensions: (H×W×D) Weight

mm kg

Standard Accessories Drawing No.

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 300×1,000×800 3×14×1.75 0.221 2D18H2A Sirocco Fan

191/150 11.5/9 406/318

kg 220V dBA 240V

★6 Sound Level (H/L)

FXSQ63MVE

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 300×700×800 3×14×1.75 0.132 D18H2A Sirocco Fan

W

Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm

Mass (Weight)

FXSQ50MVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 300×700×800 3×14×1.75 0.132 D18H2A Sirocco Fan

I/s m³/min cfm

Temperature Control

Gas Pipes Piping Connections Drain Pipe

FXSQ40MVE

BYBS45DJW1

BYBS45DJW1

BYBS71DJW1

White (10Y9/0.5) 55×800×500 3.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

White (10Y9/0.5) 55×800×500 3.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers. C: 3D039431

White (10Y9/0.5) 55×1,100×500 4.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3 ★4

5 ★6

36

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) External static pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard -Low static pressure”. Capacities are net, including a deduction for cooling (an additional for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5m downward from the unit center. These values are normally somewhat higher during actual operation as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Ceiling Mounted Built-in Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

Air Flow Rate (H/L)

mm mm m²

12,500 49,500 14.5 14.0 13,800 54,600 16.0 Galvanized Steel Plate 300×1,400×800 3×14×1.75 0.338 3D18H2A Sirocco Fan

225×1

225×1

225×1

450/358 27/21.5 953/759

466/366 28/22 988/777

633/466 38/28 1,341/988

Pa

113-82

107-75

78-39

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber Resin Net (with Mold Resistant) φ9.5 (Flare Connection)

mm

φ15.9 (Flare Connection)

φ15.9 (Flare Connection)

φ15.9 (Flare Connection)

mm

VP25 (External Dia. 32 Internal Dia. 25) 51 43/37 45/39 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 51 43/37 45/39 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

VP25 (External Dia. 32 Internal Dia. 25) 52 46/41 48/43 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

BYBS125DJW1

BYBS125DJW1

BYBS125DJW1

White (10Y9/0.5) 55×1,500×500 6.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

White (10Y9/0.5) 55×1,500×500 6.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers. C: 3D039431

White (10Y9/0.5) 55×1,500×500 6.5 Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Washers.

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes Piping Connections Drain Pipe

kg 220V dBA 240V

Safety Devices Refrigerant Control Connectable outdoor unit Model Decoration Panel (Option)

FXSQ125MVE

10,000 39,600 11.6 11.2 10,800 42,700 12.5 Galvanized Steel Plate 300×1,400×800 3×14×1.75 0.338 3D18H2A Sirocco Fan

W

pressure Drive

★6 Sound Level (H/L)

FXSQ100MVE

8,000 31,700 9.3 9.0 8,600 34,100 10.0 Galvanized Steel Plate 300×1,400×800 3×14×1.75 0.338 3D18H2A Sirocco Fan

l/s m³/min cfm

★4 External static

Mass (Weight)

FXSQ80MVE

Panel Color Dimensions: (H×W×D) Weight

mm kg

Standard Accessories Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3 ★4

5 ★6

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) External static pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard”. Capacities are net, including a deduction for cooling (an additional for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5m downward from the unit center. These values are normally somewhat higher during actual operation as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

37

Specifications

Si37-701

Ceiling Mounted Duct Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

Air Flow Rate (H/L)

mm mm m²

FXMQ50MAVE

FXMQ63MAVE

FXMQ80MAVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 390×720×690 3×16×2.0 0.181 D11/2D3AB1VE Sirocco Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 390×720×690 3×16×2.0 0.181 D11/2D3AB1VE Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 390×720×690 3×16×2.0 0.181 D11/2D3AB1VE Sirocco Fan

8,000 31,700 9.3 9.0 8,600 34,100 10.0 Galvanized Steel Plate 390×720×690 3×16×2.0 0.181 D11/2D3AA1VE Sirocco Fan

W

100×1

100×1

100×1

160×1

I/s m³/min cfm

233/191 14/11.5 494/406

233/191 14/11.5 494/406

233/191 14/11.5 494/406

325/266 19.5/16 688/565

Pa

157-118 ★4

157-118 ★4

157-118 ★4

157-108 ★4

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ6.4 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

φ12.7 (Flare Connection)

φ12.7 (Flare Connection)

External Static Pressure 50Hz Drive Temperature Control

Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes Piping Connections Drain Pipe

FXMQ40MAVE

mm

VP25 mm External Dia. 32 Internal Dia. 25 kg 44 39/35 220V dBA 240V 41/37 Fuse, Thermal Fuse for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws.

(

Mass (Weight) ★7 Sound Level (H/L)

Safety Devices Refrigerant Control Connectable outdoor unit Standard Accessories Drawing No.

)

φ15.9 (Flare Connection) VP25 VP25 External Dia. 32 External Dia. 32 Internal Dia. 25 Internal Dia. 25 44 44 39/35 39/35 41/37 41/37 Fuse, Fuse, Thermal Fuse for Fan Motor Thermal Fuse for Fan Motor Electronic Expansion Valve Electronic Expansion Valve R-410A P Series R-410A P Series Operation Manual, Operation Manual, Installation Manual, Drain Installation Manual, Drain Hose, Clamp Metal, Hose, Clamp Metal, Insulation for Fitting, Sealing Insulation for Fitting, Sealing Pads, Clamps, Screws. Pads, Clamps, Screws. C: 3D038814A

(

)

(

)

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3 ★4

★5

6 ★7

38

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) External static pressure is changeable to change over the connectors inside electrical box, this pressure means "High static pressure-Standard". Air filter is not standard accessory, but please mount it in the duct system of the suction side. Select its colorimetric method (gravity method) 50% or more. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5m downward from the unit center. These values are normally somewhat higher during actual operation as a result of ambient conditions.

φ15.9 (Flare Connection)

VP25

Dia. 32 ( External Internal Dia. 25 ) 45 42/38 44/40 Fuse, Thermal Fuse for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Ceiling Mounted Duct Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

Air Flow Rate (H/L)

mm mm m²

FXMQ200MAVE

FXMQ250MAVE

12,500 49,500 14.5 14.0 13,800 54,600 16.0 Galvanized Steel Plate 390×1,110×690 3×16×2.0 0.319 2D11/2D3AF1VE Sirocco Fan

19,800 78,500 23.0 22.4 21,500 85,300 25.0 Galvanized Steel Plate 470×1,380×1,100 3×26×2.0 0.68 D13/4G2DA1×2 Sirocco Fan

24,800 98,300 28.8 28.0 27,100 107,000 31.5 Galvanized Steel Plate 470×1,380×1,100 3×26×2.0 0.68 D13/4G2DA1×2 Sirocco Fan

W

270×1

430×1

380×2

380×2

483/383 29/23 1,024/812

600/483 36/29 1,271/1,024

966/833 58/50 2,047/1,765

1,200/1,033 72/62 2,542/2,189

Pa

157-98 ★4

191-152 ★4

221-132 ★4

270-147 ★4

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber ★5 φ9.5 (Flare Connection)

φ15.9 (Flare Connection)

φ15.9 (Flare Connection)

φ19.1(Brazing Connection)

φ22.2 (Brazing Connection)

VP25 External Dia. 32 Internal Dia. 25 63 43/39 45/41

VP25 External Dia. 32 Internal Dia. 25 65 45/42 47/44

PS1B

PS1B

137 48/45 49/46 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

137 48/45 49/46 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series

Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Gas Pipes Piping Connections Drain Pipe

mm mm kg 220V dBA 240V

★7 Sound Level (H/L)

FXMQ125MAVE

10,000 39,600 11.6 11.2 10,800 42,700 12.5 Galvanized Steel Plate 390×1,110×690 3×16×2.0 0.319 2D11/2D3AG1VE Sirocco Fan

I/s m³/min cfm

External Static Pressure 50Hz Drive

Mass (Weight)

FXMQ100MAVE

(

)

(

)

Safety Devices

Fuse, Fuse, Thermal Fuse for Fan Motor Thermal Fuse for Fan Motor

Refrigerant Control Connectable outdoor unit

Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws.

Standard Accessories Drawing No.

Electronic Expansion Valve R-410A P Series Operation Manual, Operation Manual, Installation Manual, Drain Installation Manual, Sealing Hose, Clamp Metal, Connection Pipes, Insulation for Fitting, Sealing Pads, Screws, Clamps. Pads, Clamps, Screws. C: 3D038814A

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3 ★4

★5

6 ★7

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) External static pressure is changeable to change over the connectors inside electrical box, this pressure means "High static pressure-Standard". Air filter is not standard accessory, but please mount it in the duct system of the suction side. Select its colorimetric method (gravity method) 50% or more. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5m downward from the unit center. These values are normally somewhat higher during actual operation as a result of ambient conditions.

Operation Manual, Installation Manual, Sealing Pads, Connection Pipes, Screws, Clamps.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

39

Specifications

Si37-701

Ceiling Suspended Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXHQ32MAVE

FXHQ63MAVE

FXHQ100MAVE

3,200 12,600 3.7 3.6 3,400 13,600 4.0 White (10Y9/0.5) 195×960×680 2×12×1.75 0.182 3D12K1AA1 Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 White (10Y9/0.5) 195×1,160×680 3×12×1.75 0.233 4D12K1AA1 Sirocco Fan

10,000 39,600 11.6 11.2 10,800 42,700 12.5 White (10Y9/0.5) 195×1,400×680 3×12×1.75 0.293 3D12K2AA1 Sirocco Fan

W

62×1

62×1

130×1

I/s m³/min cfm

200/166 12/10 424/353 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 24 36/31 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers.

291/233 17.5/14 618/494 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 28 39/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers. C: 3D038815A

416/325 25/19.5 883/688 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Wool Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ15.9 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 33 45/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers.

Drive Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Piping Gas Pipes mm Connections Drain Pipe mm Mass (Weight)

kg dBA

★5 Sound Level (H/L) (220-240V)

Safety Devices Refrigerant Control Connectable outdoor unit Standard Accessories Drawing No.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

40

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Wall Mounted Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXAQ25MAVE

FXAQ32MAVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 White (3.0Y8.5/10.5) 290×795×230 2×14×1.4 0.161 QCL9661M Cross Flow Fan

2,500 9,900 2.9 2.8 2,800 10,900 3.2 White (3.0Y8.5/10.5) 290×795×230 2×14×1.4 0.161 QCL9661M Cross Flow Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 White (3.0Y8.5/10.5) 290×795×230 2×14×1.4 0.161 QCL9661M Cross Flow Fan

W

40×1

40×1

40×1

I/s m³/min cfm

125/75 7.5/4.5 265/159 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ6.4 (Flare Connection) φ12.7 (Flare Connection)

133/83 8/5 282/177 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ6.4 (Flare Connection) φ12.7 (Flare Connection)

150/91 9/5.5 318/194 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ6.4 (Flare Connection) φ12.7 (Flare Connection)

Drive Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Piping Connections

FXAQ20MAVE

Liquid Pipes Gas Pipes

mm mm

Drain Pipe

mm

Mass (Weight)

kg dBA

★5 Sound Level (H/L) (220-240V)

Safety Devices Refrigerant Control Connectable outdoor unit Standard Accessories Drawing No.

VP13 (External Dia. 18 Internal Dia. 13) 11 35/29 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws.

VP13 (External Dia. 18 Internal Dia. 13) 11 36/29 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws. C: 3D039370B

VP13 (External Dia. 18 Internal Dia. 13) 11 37/29 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length:7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

41

Specifications

Si37-701

Wall Mounted Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/L)

mm mm m²

FXAQ50MAVE

FXAQ63MAVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 White (3.0Y8.5/10.5) 290×1,050×230 2×14×1.4 0.213 QCL9686M Cross Flow Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 White (3.0Y8.5/10.5) 290×1,050×230 2×14×1.4 0.213 QCL9686M Cross Flow Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 White (3.0Y8.5/10.5) 290×1,050×230 2×14×1.4 0.213 QCL9686M Cross Flow Fan

W

43×1

43×1

43×1

I/s m³/min cfm

200/150 12/9 424/318 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ6.4 (Flare Connection) φ12.7 (Flare Connection)

250/200 15/12 530/424 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ6.4 (Flare Connection) φ12.7 (Flare Connection)

316/233 19/14 671/494 Direct Drive Microprocessor Thermostat for Cooling and Heating Foamed Polystyrene / Foamed Polyethylene Resin Net (Washable) φ9.5 (Flare Connection) φ15.9 (Flare Connection)

Drive Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Piping Connections

FXAQ40MAVE

Liquid Pipes Gas Pipes

mm mm

Drain Pipe

mm

Mass (Weight)

kg dBA

★5 Sound Level (H/L) (220-240V)

Safety Devices Refrigerant Control Connectable outdoor unit Standard Accessories Drawing No.

VP13 (External Dia. 18 Internal Dia. 13) 14 39/34 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws.

VP13 (External Dia. 18 Internal Dia. 13) 14 42/36 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws. C: 3D039370B

VP13 (External Dia. 18 Internal Dia. 13) 14 46/39 Fuse Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Installation Panel, Paper Pattern for Installation, Insulation Tape, Clamps, screws.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

42

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp; 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Floor Standing Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Coil (Cross Rows×Stages×Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

mm mm m²

W I/s m³/min cfm

FXLQ20MAVE

FXLQ25MAVE

FXLQ32MAVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Ivory White (5Y7.5/1) 600×1,000×222 3×14×1.5 0.159 D14B20 Sirocco Fan

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Ivory White (5Y7.5/1) 600×1,000×222 3×14×1.5 0.159 D14B20 Sirocco Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Ivory White (5Y7.5/1) 600×1,140×222 3×14×1.5 0.200 2D14B13 Sirocco Fan

15×1

116/100 Air Flow Rate (H/L) 7/6 247/212 Drive Direct Drive Microprocessor Thermostat for Temperature Control Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber/ Urethane Foam Air Filter Resin Net (with Mold Resistant) Liquid Pipes mm φ6.4 (Flare Connection) Piping Gas Pipes mm φ 12.7 (Flare Connection) Connections Drain Pipe mm φ21 O.D (Vinyl Chloride) Mass (Weight) kg 25 35/32 220V ★5 Sound Level (H/L) dBA 240V 37/34 Fuse, Safety Devices Thermal Protector for Fan Motor Refrigerant Control Electronic Expansion Valve Connectable Outdoor Unit R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Standard Accessories Hose, Clamps, Screws, Washers, Level Adjustment Screw. Drawing No.

15×1 116/100 7/6 247/212 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 25 35/32 37/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw. C: 3D038816A

25×1 133/100 8/6 282/212 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 30 35/32 37/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5 m in front of the unit at a height of 1.5 m. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

43

Specifications

Si37-701

Floor Standing Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

mm mm m²

W I/s m³/min cfm

FXLQ40MAVE

FXLQ50MAVE

FXLQ63MAVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Ivory White (5Y7.5/1) 600×1,140×222 3×14×1.5 0.200 2D14B13 Sirocco Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Ivory White (5Y7.5/1) 600×1,420×222 3×14×1.5 0.282 2D14B20 Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Ivory White (5Y7.5/1) 600×1,420×222 3×14×1.5 0.282 2D14B20 Sirocco Fan

25×1

183/141 Air Flow Rate (H/L) 11/8.5 388/300 Drive Direct Drive Microprocessor Thermostat for Temperature Control Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber/ Urethane Foam Air Filter Resin Net (with Mold Resistant) Liquid Pipes mm φ6.4 (Flare Connection) Piping Gas Pipes mm φ 12.7 (Flare Connection) Connections Drain Pipe mm φ21 O.D (Vinyl Chloride) Mass (Weight) kg 30 38/33 220V ★5 Sound Level (H/L) dBA 240V 40/35 Fuse, Safety Devices Thermal Protector for Fan Motor Refrigerant Control Electronic Expansion Valve Connectable Outdoor Unit R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Standard Accessories Hose, Clamps, Screws, Washers, Level Adjustment Screw. Drawing No.

35×1 233/183 14/11 494/388 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 36 39/34 41/36 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw. C: 3D038816A

35×1 266/200 16/12 565/424 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ15.9 (Flare Connection) φ21 O.D (Vinyl Chloride) 36 40/35 42/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

44

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5 m in front of the unit at a height of 1.5 m. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

Specifications

Concealed Floor Standing Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

mm mm m²

W I/s m³/min cfm

FXNQ20MAVE

FXNQ25MAVE

FXNQ32MAVE

2,000 7,800 2.3 2.2 2,200 8,500 2.5 Galvanized Steel Plate 610×930×220 3×14×1.5 0.159 D14B20 Sirocco Fan

2,500 9,900 2.9 2.8 2,800 10,900 3.2 Galvanized Steel Plate 610×930×220 3×14×1.5 0.159 D14B20 Sirocco Fan

3,200 12,600 3.7 3.6 3,400 13,600 4.0 Galvanized Steel Plate 610×1,070×220 3×14×1.5 0.200 2D14B13 Sirocco Fan

15×1

116/100 Air Flow Rate (H/L) 7/6 247/212 Drive Direct Drive Microprocessor Thermostat for Temperature Control Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber/ Urethane Foam Air Filter Resin Net (with Mold Resistant) Liquid Pipes mm φ6.4 (Flare Connection) Piping Gas Pipes mm φ 12.7 (Flare Connection) Connections Drain Pipe mm φ21 O.D (Vinyl Chloride) Mass (Weight) kg 19 35/32 220V ★5 Sound Level (H/L) dBA 240V 37/34 Fuse, Safety Devices Thermal Protector for Fan Motor Refrigerant Control Electronic Expansion Valve Connectable Outdoor Unit R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Standard Accessories Hose, Clamps, Screws, Washers, Level Adjustment Screw. Drawing No.

15×1 116/100 7/6 247/212 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 19 35/32 37/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw. C: 3D038817A

25×1 133/100 8/6 282/212 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber/ Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 23 35/32 37/34 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

Specifications

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5 m in front of the unit at a height of 1.5 m. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

45

Specifications

Si37-701

Concealed Floor Standing Type Model kcal/h Btu/h kW kW kcal/h Btu/h kW

★1 Cooling Capacity (19.5°CWB) ★2 Cooling Capacity (19.0°CWB) ★3 Heating Capacity

Casing Color Dimensions: (H×W×D) Rows×Stages×Fin Pitch Coil (Cross Fin Coil) Face Area Model Type Motor Output × Number of Units Fan

mm mm m²

W I/s m³/min cfm

FXNQ40MAVE

FXNQ50MAVE

FXNQ63MAVE

4,000 16,000 4.7 4.5 4,300 17,100 5.0 Galvanized Steel Plate 610×1,070×220 3×14×1.5 0.200 2D14B13 Sirocco Fan

5,000 19,800 5.8 5.6 5,400 21,500 6.3 Galvanized Steel Plate 610×1,350×220 3×14×1.5 0.282 2D14B20 Sirocco Fan

6,300 24,900 7.3 7.1 6,900 27,300 8.0 Galvanized Steel Plate 610×1,350×220 3×14×1.5 0.282 2D14B20 Sirocco Fan

25×1

183/141 Air Flow Rate (H/L) 11/8.5 388/300 Drive Direct Drive Microprocessor Thermostat for Temperature Control Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber / Urethane Foam Air Filter Resin Net (with Mold Resistant) Liquid Pipes mm φ6.4 (Flare Connection) Piping Gas Pipes mm φ 12.7 (Flare Connection) Connections Drain Pipe mm φ21 O.D (Vinyl Chloride) Mass (Weight) kg 23 38/33 220V ★5 Sound Level (H/L) dBA 240V 40/35 Fuse, Safety Devices Thermal Protector for Fan Motor Refrigerant Control Electronic Expansion Valve Connectable Outdoor Unit R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Standard Accessories Hose, Clamps, Screws, Washers, Level Adjustment Screw. Drawing No.

35×1 233/183 14/11 494/388 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber / Urethane Foam Resin Net (with Mold Resistant) φ6.4 (Flare Connection) φ12.7 (Flare Connection) φ21 O.D (Vinyl Chloride) 27 39/34 41/36 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw. C: 3D038817A

35×1 266/200 16/12 565/424 Direct Drive Microprocessor Thermostat for Cooling and Heating Glass Fiber / Urethane Foam Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ15.9 (Flare Connection) φ21 O.D (Vinyl Chloride) 27 40/35 42/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve R-410A P Series Operation Manual, Installation Manual, Insulation for Fitting, Drain Hose, Clamps, Screws, Washers, Level Adjustment Screw.

Notes: ★1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level ★2 ★3

4 ★5

46

difference: 0m. Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length: 7.5m, level difference: 0m. (Heat pump only) Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. Anechoic chamber conversion value, measured at a point 1.5 m in front of the unit at a height of 1.5 m. During actual operation, these values are normally somewhat higher as a result of ambient conditions.

Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3

Specifications

Si37-701

1.3

Specifications

BS Units

Model Power Supply Total Capacity Index of Indoor Unit No. of Connectable Indoor Units Casing Dimensions: (H×W×D) mm Sound Absorbing Thermal Insulation Material Liquid Pipes Indoor Unit Gas Pipes Piping Liquid Pipes Connection Outdoor Suction Gas Pipes Unit Discharge Gas Pipes Weight kg Standard Accessories Drawing No.

Note:

BSVQ100PV1

BSVQ160PV1

BSVQ250PV1

1 Phase 50Hz 200-240V 100 or less Max. 5 Galvanized steel plate 207×388×326

1 Phase 50Hz 200-240V More than 100 but 160 or less Max. 8 Galvanized steel plate 207×388×326

1 Phase 50Hz 200-240V More than 160 but 250 less Max. 5 Galvanized steel plate 207×388×326

Foamed polyurethane, Felt

Foamed polyurethane, Felt

Foamed polyurethane, Felt

9.5mm C1220T (brazing connection) ★1 15.9mm C1220T (brazing connection) ★1 9.5mm C1220T (brazing connection) ★1 15.9mm C1220T (brazing connection) ★1

9.5mm C1220T (brazing connection) 15.9mm C1220T (brazing connection) 9.5mm C1220T (brazing connection) 15.9mm C1220T (brazing connection)

9.5mm C1220T (brazing connection) 22.2mm C1220T (brazing connection) ★2 9.5mm C1220T (brazing connection) 22.2mm C1220T (brazing connection) ★2

12.7mm C1220T (brazing connection) ★1

12.7mm C1220T (brazing connection)

19.1mm C1220T (brazing connection) ★3

14 Installation manual, Attached pipe Insulation pipe cover, Clamps C: 4D057926

14 Installation manual, Attached pipe Insulation pipe cover, Clamps C: 4D057927

15 Installation manual, Attached pipe Insulation pipe cover, Clamps C: 4D057928

★1 If the total capacity of all indoor units connected to the system is less than 7.1 kW, connect the attached pipe to the field pipe.

(Braze the connection between the attached pipe and field pipe.) ★2 Use the field flanged pipe.

Also, with a 200 class indoor unit, connect the attached reducer to the field pipe. (Braze the connection between the attached pipe and field pipe.) ★3 Use the attached pipe.

Connection Range for BS Unit Outdoor unit model name REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REYQ18P REYQ20P REYQ22P REYQ24P REYQ26P REYQ28P REYQ30P REYQ32P REYQ34P REYQ36P REYQ38P REYQ40P REYQ42P REYQ44P REYQ46P REYQ48P

Components

Indoor unit total capacity

Note:

Specifications

★

Total capacity of connectable indoor units 100 to 260 (400) 125 to 325 (500) 150 to 390 (600) 175 to 455 (700) 200 to 520 (800) 225 to 585 (720) 250 to 650 (800) 275 to 715 (880) 300 to 780 (960) 325 to 845 (1,040) 350 to 910 (1,120) 375 to 975 (1,200) 400 to 1,040 (1,280) 425 to 1,105 (1,105) 450 to 1,170 (1,170) 475 to 1,235 (1,235) 500 to 1,300 (1,300) 525 to 1,365 (1,365) 550 to 1,430 (1,430) 575 to 1,495 (1,495) 600 to 1,560 (1,560)

Number of connectable indoor units 13 (20) 16 (25) 19 (30) 22 (35) 26 (40) 29 (36) 32 (40) 35 (44) 39 (48) 42 (52) Same number of 45 (56) BS units 48 (60) 52 (64) 55 (55) 58 (58) 61 (61)

64 (64)

Values inside brackets are based on connection of indoor units rated at maximum capacity, 200% from single outdoor units, 160% from double outdoor units, 130% from triple outdoor units.

47

Specifications

48

Si37-701

Specifications

Si37-701

Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................................................................................50 1.1 1.2 1.3 1.4 1.5 1.6 1.7

REYQ8P, 10P, 12P ................................................................................50 REYQ14P, 16P ......................................................................................52 REMQ8PY1 (Multi 8HP).........................................................................54 REMQ10PY1, 12PY1 (Multi 10, 12HP) ..................................................56 REMQ14PY1, 16PY1 (Multi 14, 16HP) ..................................................58 BS Unit Functional Parts ........................................................................60 Indoor Units ............................................................................................61

2. Functional Parts Layout ........................................................................62 2.1 2.2 2.3 2.4 2.5

REYQ8P, 10P, 12P ................................................................................62 REYQ14P, 16P ......................................................................................63 REMQ8P ................................................................................................64 REMQ10P, 12P......................................................................................65 REMQ14P, 16P......................................................................................66

3. Refrigerant Flow for Each Operation Mode...........................................67

Refrigerant Circuit

49

Refrigerant Circuit

Si37-701

1. Refrigerant Circuit 1.1

REYQ8P, 10P, 12P

No. in refrigerant Symbol Name system diagram 1 M1C Inverter compressor (INV) 2

M2C

Standard compressor 1 (STD1)

3

M1F

Inverter fan

4

M2F

Inverter fan

5(6) 7(8) 9 10(11) 12 13 14 15 16 17(18) 19 20 21 22 23 24 25 26 27 28 29 30 31 32(42) 33 34 35(45)

Y1E (Y3E) Y2E (Y5E)

Electronic expansion valve (Main1 (Main2)) Electronic expansion valve (Subcool1 (Subcool2)) Electronic expansion valve Y4E (Refrigerant charge EVJ) Y5S Solenoid valve (Main bypass1 (Y10S) (Main bypass2)) Y4S Solenoid valve (Hot gas: SVP) Solenoid valve (Refrigerant Y3S regulator liquid pipe SVL) Solenoid valve (Refrigerant Y1S regulator gas purging pipe SVG) Solenoid valve (Refrigerant Y7S regulator discharge pipe SVO) Solenoid valve (Discharge Y6S pipe of refrigerant regulator) Y2S 4 way valve (Heat exchanger (Y9S) switch 20SA) 4 way valve (Dual pressure Y8S gas pipe switch 20SB) S1NPH High pressure sensor S2NPL Low pressure sensor S1PH HP pressure switch (For INV) S2PH HP pressure switch (For STD) Pressure regulating valve — (Liquid pipe) Pressure regulating valve — (Refrigerant regulator) — Subcooling heat exchanger — Refrigerant regulator — Capillary tube —

Capillary tube

— Capillary tube R1T Thermistor (Outdoor air: Ta) R8T Thermistor (Suction pipe: TsA) (R10T) Thermistor (INV discharge R31T pipe: Tdi) Thermistor (STD1 discharge R32T pipe: Tds1) R4T Thermistor (Heat exchanger (R12T) deicer: Tb)

36(46)

R2T Thermistor (Heat exchanger (R11T) gas pipe Tg)

37(47)

R7T Thermistor (Heat exchanger (R15T) liquid pipe Tf)

38(48)

R5T Thermistor (Subcooling heat (R13T) exchanger gas pipe: Tsh)

39 40(50)

50

R6T

Thermistor (Subcooling heat exchanger liquid pipe Tl)

R9T (R14T) Thermistor (Liquid pipe Tsc)

Major Function Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of operating steps is as follows when Inverter compressor is operated in combination with Standard compressor. REYQ8, 10, 12P : 37 steps Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter. Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter. While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant. PI control is applied to keep the outlet superheated degree of subcooling heat exchanger constant. This is used to open/close refrigerant charge port. This opens in cooling operation. Used to prevent the low pressure from transient falling. This is used to collect refrigerant to the refrigerant regulator. This is used to collect refrigerant to the refrigerant regulator. This is used to discharge refrigerant from the refrigerant regulator. Bypass the high pressure gas to the refrigerant regulator. This is used to switch outdoor heat exchanger to evaporator or condenser. This is used to switch dual pressure gas pipe to high pressure or low pressure. Used to detect high pressure. Used to detect low pressure. This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation. This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage. This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage. Apply subcooling to liquid refrigerant. Surplus refrigerant is held according to the operation conditions. Used to return the refrigerating oil separated through the oil separator to the INV compressor. Used to return the refrigerating oil separated through the oil separator to the STD1 compressor. This is used to discharge refrigerant from the refrigerant regulator. Used to detect outdoor temperature, correct discharge pipe temperature, and others. Used to detect suction pipe temperature. Used to detect discharge pipe temperature. Used for compressor temperature protection control. Used to detect liquid pipe temperature of air heat exchanger. Used to make judgments on defrosting operation. This detects temperature of gas pipe for air heat exchanger. Used to exercise the constant control of superheated degree when an evaporator is used for outdoor unit heat exchanging. This detects temperature of liquid pipe between the air heat exchanger and main electronic expansion valve. Used to make judgments on the recover or discharge refrigerants to the refrigerant regulator. Used to detect gas pipe temperature on the evaporation side of subcooling heat exchanger. Used to exercise the constant control of superheated degree at the outlet of supercooled heat exchanger. This detects temperature of liquid pipe between the main expansion valve and subcooling heat exchanger. This detects temperature of liquid pipe between the liquid stop valve and subcooling heat exchanger.

Refrigerant Circuit

Si37-701

Refrigerant Circuit

REYQ8P, 10P, 12P (8HP, 10HP, 12HP Single Type) (INV Unit + STD Unit) Liquid Pipe

Subcool heat exchanger 2

50

Left

26

Stop Valve

8

48

46

Heat exchanger 2

11 45

47

18

6 4

Dual Pressure Gas Pipe

19

Stop Valve 23

S2PH 34

2

STD 29

9

Suction Pipe

42

Stop Valve

40

Subcool heat exchanger 1

39

Right

26 7

38

Gauge Port

36

24

10

Heat exchanger 1 35

37

17

5

S1NPH 20

25

13

3 31

12

27

22 S1PH 33

1

16

INV

14 15

28

Gauge Port

30 32

Refrigerant Circuit

21

S2NPL

51

Refrigerant Circuit

1.2

Si37-701

REYQ14P, 16P

No. in refrigerant Symbol system diagram

Name

Major Function

1

M1C

Inverter compressor (INV1)

2

M2C

Standard compressor 1 (INV2)

Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter. The number of operating steps is as follows. REYQ14P or 16P : 26 step

3

M1F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

4

M2F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

5(6)

Y1E (Y3E)

Electronic expansion valve (Main1 (Main2))

While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant.

7(8)

Y2E (Y5E)

Electronic expansion valve (Subcool1 (Subcool2))

PI control is applied to keep the outlet superheated degree of subcooling heat exchanger constant.

9

Y4E

Electronic expansion valve (Refrigerant charge EVJ)

This is used to open/close refrigerant charge port.

10(11)

Y5S Solenoid valve (Main bypass1 (Y10S) (Main bypass2))

This opens in cooling operation.

12

Y4S

Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.

13

Y3S

Solenoid valve (Refrigerant regulator liquid pipe SVL)

This is used to collect refrigerant to the refrigerant regulator.

14

Y1S

Solenoid valve (Refrigerant regulator gas purging pipe SVG)

This is used to collect refrigerant to the refrigerant regulator.

15

Y7S

Solenoid valve (Refrigerant regulator discharge pipe SVO) This is used to discharge refrigerant from the refrigerant regulator.

16

Y6S

Solenoid valve (Discharge pipe of refrigerant regulator)

Bypass the high pressure gas to the refrigerant regulator.

17(18)

Y2S (Y9S)

4 way valve (Heat exchanger switch 20SA)

This is used to switch outdoor heat exchanger to evaporator or condenser.

19

Y8S

4 way valve (Dual pressure gas pipe switch 20SB)

This is used to switch dual pressure gas pipe to high pressure or low pressure.

20

S1NPH High pressure sensor

Used to detect high pressure.

21

S2NPL Low pressure sensor

Used to detect low pressure.

S1PH HP pressure switch (For INV (S2PH) compressor)

This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation.

22(23) 24

—

Pressure regulating valve (Liquid pipe)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

25

—

Pressure regulating valve (Refrigerant regulator)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

26

—

Subcooling heat exchanger

Apply subcooling to liquid refrigerant.

27

—

Refrigerant regulator

Surplus refrigerant is held according to the operation conditions.

28

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the INV compressor.

29

—

Capillary tube

This is used to discharge refrigerant from the refrigerant regulator.

30

R1T

Thermistor (Outdoor air: Ta)

Used to detect outdoor temperature, correct discharge pipe temperature, and others.

31(41)

R8T Thermistor (Suction pipe: TsA) Used to detect suction pipe temperature. (R10T)

32

R31T

Thermistor (INV1 discharge pipe: Tdi)

33

R32T

Thermistor (INV2 discharge pipe: Tds1)

Used to detect discharge pipe temperature. Used for compressor temperature protection control.

35(45)

R4T Thermistor (Heat exchanger (R12T) deicer: Tb)

Used to detect liquid pipe temperature of air heat exchanger. Used to make judgments on defrosting operation.

36(46)

R2T Thermistor (Heat exchanger (R11T) gas pipe Tg)

This detects temperature of gas pipe for air heat exchanger. Used to exercise the constant control of superheated degree when an evaporator is used for outdoor unit heat exchanging.

37(47)

R7T Thermistor (Heat exchanger (R15T) liquid pipe Tf)

This detects temperature of liquid pipe between the air heat exchanger and main electronic expansion valve. Used to make judgments on the recover or discharge refrigerants to the refrigerant regulator.

38(48)

R5T Thermistor (Subcooling heat (R13T) exchanger gas pipe: Tsh)

This detects temperature of gas pipe on the evaporator side for the subcooling heat exchanger. Used to exercise the constant control of superheated degree at the outlet of supercooled heat exchanger.

39 40(50)

52

R6T

Thermistor (Subcooling heat exchanger liquid pipe Tl)

R9T Thermistor (Liquid pipe Tsc) (R14T)

This detects temperature of liquid pipe between the main expansion valve and subcooling heat exchanger. This detects temperature of liquid pipe between the liquid stop valve and subcooling heat exchanger.

Refrigerant Circuit

Si37-701

Refrigerant Circuit

REYQ14P, 16P (14HP, 16HP Single Type) (INV Unit × 2) Liquid Pipe

Subcool heat exchanger 2

50

Left

26

Stop Valve

8

48

46

Heat exchanger 2

11 45

47

18

6

4

Dual Pressure Gas Pipe

19

Stop Valve

23

S2PH 33

2 INV2 28 9

Suction Pipe

41

Stop Valve 40

Subcool heat exchanger 1

Liquid Pipe

39

Right

26 7

38

36

24

10

Heat exchanger 1 35

Gauge Port 37

17

S1NPH

25

13

3

20

5

30 12

27

22 S1PH 32 16 1 INV1

14 15

28

Gauge Port

29 31

Refrigerant Circuit

21

S2NPL

53

Refrigerant Circuit

1.3

Si37-701

REMQ8PY1 (Multi 8HP)

No. in refrigerant Symbol system diagram

54

Name

Major Function

1

M1C

Inverter compressor (INV)

Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter. Compressor operation steps : Refer to page 104~107.

4

M1F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

6

Y1E

Electronic expansion valve (Main: EVM)

While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant.

7

Y3E

Electronic expansion valve (Subcool: EVT)

PI control is applied to keep the outlet superheated degree of subcooling heat exchanger constant.

8

Y2E

Electronic expansion valve (Refrigerant charge EVJ)

This is used to open/close refrigerant charge port.

9

Y6S

Solenoid valve (Main bypass SVE)

This opens in cooling operation.

10

Y5S

Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.

11

Y4S

Solenoid valve (Refrigerant regulator liquid pipe SVL)

This is used to collect refrigerant to the refrigerant regulator.

12

Y1S

Solenoid valve (Refrigerant regulator gas purging pipe SVG)

This is used to collect refrigerant to the refrigerant regulator.

13

Y7S

Solenoid valve (Refrigerant This is used to discharge refrigerant from the refrigerant regulator. regulator discharge pipe SVO)

14

Y8S

Solenoid valve (Discharge pipe of refrigerant regulator)

Bypass the high pressure gas to the refrigerant regulator.

15

Y3S

4 way valve (Heat exchanger switch 20SA)

This is used to switch outdoor heat exchanger to evaporator or condenser.

16

Y2S

4 way valve (Dual pressure gas pipe switch 20SB)

This is used to switch dual pressure gas pipe to high pressure or low pressure.

17

S1NPH High pressure sensor

Used to detect high pressure.

18

S2NPL Low pressure sensor

Used to detect low pressure.

19

S1PH

22

HP pressure switch (For INV compressor)

This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation.

—

Pressure regulating valve (Liquid pipe)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

23

—

Pressure regulating valve (Refrigerant regulator)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

24

—

Subcooling heat exchanger

Apply subcooling to liquid refrigerant.

25

—

Refrigerant regulator

Surplus refrigerant is held according to the operation conditions.

26

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the INV compressor.

29

—

Capillary tube

This is used to discharge refrigerant from the refrigerant regulator.

30

R1T

Thermistor (Outdoor air: Ta)

Used to detect outdoor temperature.

31

R8T

Thermistor (Suction pipe: TsA) Used to detect suction pipe temperature.

32

R31T

Thermistor (INV discharge pipe: Tdi)

Used to detect discharge pipe temperature.

35

R4T

Thermistor (Heat exchanger deicer Tb)

This detects temperature of some of the liquid pipes for air heat exchanger.

36

R2T

Thermistor (Heat exchanger gas pipe Tg)

This detects temperature of gas pipe for air heat exchanger.

37

R7T

Thermistor (Heat exchanger liquid pipe Tf)

This detects temperature of liquid pipe between the air heat exchanger and main electronic expansion valve.

38

R5T

Thermistor (Subcooling heat exchanger gas pipe Tsh)

This detects temperature of gas pipe on the evaporator side for the subcooling heat exchanger.

39

R6T

Thermistor (Subcooling heat exchanger liquid pipe Tl)

This detects temperature of liquid pipe between the main expansion valve and subcooling heat exchanger.

40

R9T

Thermistor (Liquid pipe Tsc)

This detects temperature of liquid pipe between the liquid stop valve and subcooling heat exchanger.

Refrigerant Circuit

Si37-701

Refrigerant Circuit

REMQ8PY1

40

Stop Valve Liquid Pipe

39 24 7

38

36

22

9

35

37

15

6

4

30

17 S1NPH

Stop Valve Equalizing Pipe

23 11

10 16

Stop Valve Dual Pressure Gas Pipe

19 S1PH

25

32 14 1

12

INV 13 26

29

S2NPL 18

8

Gauge Port

Stop Valve Suction Pipe 31

Refrigerant Circuit

55

Refrigerant Circuit

1.4

Si37-701

REMQ10PY1, 12PY1 (Multi 10, 12HP)

No. in refrigerant Symbol system diagram

56

Name

Major Function

1

M1C

Inverter compressor (INV)

Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of operating steps is as follows when Inverter compressor is operated in combination with Standard compressor. Compressor operation steps : Refer to page 104~107.

2

M2C

Standard compressor 1 (STD1)

4

M1F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

6

Y1E

Electronic expansion valve (Main: EVM)

While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant.

7

Y3E

Electronic expansion valve (Subcool: EVT)

PI control is applied to keep the outlet superheated degree of subcooling heat exchanger constant.

8

Y2E

Electronic expansion valve (Refrigerant charge EVJ)

This is used to open/close refrigerant charge port.

9

Y6S

Solenoid valve (Main bypass SVE)

This opens in cooling operation.

10

Y5S

Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.

11

Y4S

Solenoid valve (Refrigerant regulator liquid pipe SVL)

This is used to collect refrigerant to the refrigerant regulator.

12

Y1S

Solenoid valve (Refrigerant regulator gas purging pipe SVG)

This is used to collect refrigerant to the refrigerant regulator.

13

Y7S

Solenoid valve (Refrigerant This is used to discharge refrigerant from the refrigerant regulator. regulator discharge pipe SVO)

14

Y8S

Solenoid valve (Discharge pipe of refrigerant regulator)

Bypass the high pressure gas to the refrigerant regulator.

15

Y3S

4 way valve (Heat exchanger switch 20SA)

This is used to switch outdoor heat exchanger to evaporator or condenser.

16

Y2S

4 way valve (Dual pressure gas pipe switch 20SB)

This is used to switch dual pressure gas pipe to high pressure or low pressure.

17

S1NPH High pressure sensor

Used to detect high pressure.

18

S2NPL Low pressure sensor

Used to detect low pressure.

19

S1PH

HP pressure switch (For INV compressor)

20

S2PH

HP pressure switch (For STD compressor 1)

22

—

Pressure regulating valve (Liquid pipe)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

23

—

Pressure regulating valve (Refrigerant regulator)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation.

24

—

Subcooling heat exchanger

Apply subcooling to liquid refrigerant.

25

—

Refrigerant regulator

Surplus refrigerant is held according to the operation conditions.

26

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the INV compressor.

27

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the STD1 compressor.

29

—

Capillary tube

This is used to discharge refrigerant from the refrigerant regulator.

30

R1T

Thermistor (Outdoor air: Ta)

Used to detect outdoor temperature, correct discharge pipe temperature, and others.

31

R8T

Thermistor (Suction pipe: TsA) Used to detect suction pipe temperature.

32

R31T

Thermistor (INV discharge pipe: Tdi)

33

R32T

Thermistor (STD1 discharge pipe: Tds1)

35

R4T

Thermistor (Heat exchanger deicer: Tb)

Used to detect liquid pipe temperature of air heat exchanger.

36

R2T

Thermistor (Heat exchanger gas pipe Tg)

This detects temperature of gas pipe for air heat exchanger.

37

R7T

Thermistor (Heat exchanger liquid pipe Tf)

This detects temperature of liquid pipe between the air heat exchanger and main electronic expansion valve.

38

R5T

Thermistor (Subcooling heat exchanger gas pipe: Tsh)

Used to detect gas pipe temperature on the evaporation side of subcooling heat exchanger.

39

R6T

Thermistor (Subcooling heat exchanger liquid pipe Tl)

This detects temperature of liquid pipe between the main expansion valve and subcooling heat exchanger.

40

R9T

Thermistor (Liquid pipe Tsc)

This detects temperature of liquid pipe between the liquid stop valve and subcooling heat exchanger.

Used to detect discharge pipe temperature.

Refrigerant Circuit

Si37-701

Refrigerant Circuit

REMQ10PY1, 12PY1

40

Stop Valve Liquid Pipe

39 24 7

38

9

22 35

36

37

15

6

4

23

S1NPH 17

Stop Valve Equalizing Pipe

11

30

10 16

Stop Valve Dual Pressure Gas Pipe

19 S1PH

20 S2PH

32

33

25

12 14 1

2

INV

S1 13

27 29

26

18 S2NPL

8

Stop Valve

Gauge Port 31

Suction Pipe

Refrigerant Circuit

57

Refrigerant Circuit

1.5

Si37-701

REMQ14PY1, 16PY1 (Multi 14, 16HP)

No. in refrigerant Symbol system diagram

58

Name

Major Function

1

M1C

Inverter compressor (INV)

2

M2C

Standard compressor 1 (STD1)

Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of operating steps is as follows when Inverter compressor is operated in combination with Standard compressor. Standard compressor 2 (STD2) Compressor operation steps : Refer to page 104~107.

3

M3C

4

M1F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

5

M2F

Inverter fan

Since the system is of air heat exchanging type, the fan is operated at 9-step rotation speed by using the inverter.

6

Y1E

Electronic expansion valve (Main: EVM)

While in heating operation, PI control is applied to keep the outlet superheated degree of air heat exchanger constant.

7

Y3E

Electronic expansion valve (Subcool: EVT)

PI control is applied to keep the outlet superheated degree of subcooling heat exchanger constant.

8

Y2E

Electronic expansion valve (Refrigerant charge EVJ)

This is used to open/close refrigerant charge port. This opens in cooling operation.

9

Y6S

Solenoid valve (Main bypass SVE)

10

Y5S

Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.

11

Y4S

Solenoid valve (Refrigerant regulator liquid pipe SVL)

This is used to collect refrigerant to the refrigerant regulator.

12

Y1S

Solenoid valve (Refrigerant regulator gas purging pipe SVG)

This is used to collect refrigerant to the refrigerant regulator.

13

Y7S

Solenoid valve (Refrigerant This is used to discharge refrigerant from the refrigerant regulator. regulator discharge pipe SVO)

14

Y8S

Solenoid valve (Discharge pipe of refrigerant regulator)

Bypass the high pressure gas to the refrigerant regulator.

15

Y3S

4 way valve (Heat exchanger switch 20SA)

This is used to switch outdoor heat exchanger to evaporator or condenser.

16

Y2S

4 way valve (Dual pressure gas pipe switch 20SB)

This is used to switch dual pressure gas pipe to high pressure or low pressure.

17

S1NPH High pressure sensor

Used to detect high pressure.

18

S2NPL Low pressure sensor

Used to detect low pressure.

19

S1PH

HP pressure switch (For INV compressor)

20

S2PH

HP pressure switch (For STD compressor 1)

21

S3PH

HP pressure switch (For STD compressor 2)

22

—

Pressure regulating valve (Liquid pipe)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

23

—

Pressure regulating valve (Refrigerant regulator)

This is used when pressure increases, to prevent any damage on components caused by pressure increase in transport or storage.

This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation.

24

—

Subcooling heat exchanger

Apply subcooling to liquid refrigerant.

25

—

Refrigerant regulator

Surplus refrigerant is held according to the operation conditions.

26

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the INV compressor.

27

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the STD1 compressor.

28

—

Capillary tube

Used to return the refrigerating oil separated through the oil separator to the STD2 compressor.

29

—

Capillary tube

This is used to discharge refrigerant from the refrigerant regulator.

30

R1T

Thermistor (Outdoor air: Ta)

Used to detect outdoor temperature, correct discharge pipe temperature, and others.

31

R8T

Thermistor (Suction pipe: TsA) Used to detect suction pipe temperature.

32

R31T

Thermistor (INV discharge pipe: Tdi)

33

R32T

Thermistor (STD1 discharge pipe: Tds1) Used to detect discharge pipe temperature.

34

R33T

Thermistor (STD2 discharge pipe: Tds2)

35

R4T

Thermistor (Heat exchanger deicer: Tb)

Used to detect liquid pipe temperature of air heat exchanger.

36

R2T

Thermistor (Heat exchanger gas pipe Tg)

This detects temperature of gas pipe for air heat exchanger.

37

R7T

Thermistor (Heat exchanger liquid pipe Tf)

This detects temperature of liquid pipe between the air heat exchanger and main electronic expansion valve.

38

R5T

Thermistor (Subcooling heat exchanger gas pipe: Tsh)

This detects temperature of gas pipe on the evaporator side for the subcooling heat exchanger.

39

R6T

Thermistor (Subcooling heat exchanger liquid pipe Tl)

This detects temperature of liquid pipe between the main expansion valve and subcooling heat exchanger.

40

R9T

Thermistor (Liquid pipe Tsc)

This detects temperature of liquid pipe between the liquid stop valve and subcooling heat exchanger.

Refrigerant Circuit

Si37-701

Refrigerant Circuit

REMQ14PY1, 16PY1

Stop Valve Liquid Pipe

40 39 24 7

38

9 22

35

36

37 6 15 4

5 17

Stop Valve Equalizing Pipe

30

S1NPH

23 11

10

Stop Valve Dual Pressure Gas Pipe

16

19 S1PH

20 S2PH

21 S3PH

33

34

32

1

2

INV

3

S1

25

S2

27

12 28

13

26 29

18 S2NPL

8

Stop Valve

Gauge Port 31

Suction Pipe

Refrigerant Circuit

59

Refrigerant Circuit

1.6

Si37-701

BS Unit Functional Parts

BSVQ100,160,250PV1 No. 1

Name Electronic expansion valve (EVH)

Symbol Y4E

2 3

Electronic expansion valve (EVL) Electronic expansion valve (EVHS)

Y5E

4 5

Electronic expansion valve (EVLS) Electronic expansion valve (EVSC)

Y3E

Y2E

Y1E

6 Capillary tube Note : Factory set of all EV opening : 60pls

Liquid

Function Opens while in heating operation or all indoor units are in cooling operation. (Max : 760pls) Opens while in cooling operation. (Max : 760pls) Opens while in heating operation or all indoor units are in cooling operation. (Max : 480pls) Opens while in cooling operation. (Max : 480pls) Used to subcool liquid refrigerant of heating indoor unit while in cool/ heat simultaneous operation. (Max : 480pls) Used to bypass high pressure gas to low pressure side.

Liquid

Dual pressure

Indoor side

Outdoor side

Gas

Suction

60

Refrigerant Circuit

Si37-701

1.7

Refrigerant Circuit

Indoor Units

FXCQ, FXFQ, FXZQ, FXKQ, FXDQ, FXDYQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ



Gas-side piping

Fan 



Liquid-side piping Filter

No.
  

Refrigerant Circuit

Name Electronic expansion valve Suction air thermistor Liquid pipe thermistor Gas pipe thermistor

Electronic expansion valve Filter


Symbol Y1E

Function Used to control superheated degree of gas when cooling and subcooled degree when heating.

R1T

Used for thermostat control.

R2T

Used to control superheated degree of gas when cooling and subcooled degree when heating. Used for gas superheated degree control when cooling.

R3T

61

Functional Parts Layout

Si37-701

2. Functional Parts Layout 2.1

REYQ8P, 10P, 12P

Plan

18

10

19

17

13

11

14

16

23

15

12

22

33 34

Front View

40

7

4 3 36 5

9 38

6 20 8

21

46

37

47

31

48

32

42 39

45

1 2

62

35

Refrigerant Circuit

Si37-701

2.2

Functional Parts Layout

REYQ14P, 16P

Plan

10

17

19 13 18 14 11 16

15

23 12

22 32

33

Front View 40

4

7

36

3 5

9 38 6

8

20

46

21

47

30 48

37

41

39 45 31

1 2

Refrigerant Circuit

35

63

Functional Parts Layout

2.3

Si37-701

REMQ8P

Plan 31

10

25 REFRIGERANT REGULATOR

11

7

8

9

18

40 19 38

32

Front View 4

16

15

6

17 36

30

37 14 39

35

1

12

13

Note: 64

For reference numbers, refer to P54. Refrigerant Circuit

Si37-701

2.4

Functional Parts Layout

REMQ10P, 12P

Plan 31

10

25 REFRIGERANT REGULATOR 11

7

8

18

9

20

40

19

38

33 31

Front View 4

16

15

6

17 36

37

30

39 14

35

12

2

13

1

Note: Refrigerant Circuit

For reference number, refer to P56. 65

Functional Parts Layout

2.5

Si37-701

REMQ14P, 16P

Plan 31

10

25 REFRIGERANT REGULATOR 19 11 20 7 21 8

9

18

34 40

33

32 38

Front View 4

5

16

15 17 6

36

30

37

39

35

3 12

13

1

Note: 66

2

For reference number, refer to P58. Refrigerant Circuit

Refrigerant Circuit

Cooling Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Cooling Unit

Thermostat "OFF"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Pipe Stop Valve

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

3. Refrigerant Flow for Each Operation Mode

REYQ8P, 10P, 12P Cooling Operation

67

68

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit

Suction Pipe

Dual Pressure Gas Pipe

Liquid Pipe

Stop Valve

EVJ

Stop Valve

Stop Valve

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Heating Operation

Refrigerant Circuit

Refrigerant Circuit

Heating Unit

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit Thermostat "ON"

Operation "ON"

Thermostat "ON"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi

INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Simultaneous Cooling / Heating Operation

69

70

Cooling Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVL

EVHS

EVSC

EVH

EVL

EVH

EVHS

EVSC

BS Unit

EVLS

"High temperature, high pressure gas"

Cooling Unit

Thermostat "OFF"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Cooling Oil Return Operation

Refrigerant Circuit

Refrigerant Circuit

Operation "OFF" EVH

EVLS

EVL

EVHS

EVSC

BS Unit

EVLS

"High temperature, high pressure liquid"

"Low temperature, low pressure"

EVH EVL

EVHS

EVSC

BS Unit

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Indoor Unit

Heating Unit Thermostat "OFF"

Operation "ON"

Indoor Unit

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Heating Oil Return Operation

71

72

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "ON"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Oil Return Operation at Simultaneous Cooling / Heating Operation

Refrigerant Circuit

Refrigerant Circuit

Heating Unit

Heating Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "OFF"

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit

• Each unit is defrosted. • With indoor units, the heating cycle is kept.

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tb Tf

EVT

Tf

EVT

Tb

TL

Ta

In operation of defrosting

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Partial Defrosting 1 (Defrosting in the Right Unit)

73

74

Heating Unit

Heating Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "OFF"

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit

• Each unit is defrosted. • With indoor units, the heating cycle is kept.

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tdi INV

S2NPL

Tsh Tb Tf

EVT

Tf

EVT

Tb

TL

Ta

In operation of defrosting

Tsh

STD

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Partial Defrosting 2 (Defrosting in the Left Unit)

Refrigerant Circuit

Refrigerant Circuit

Cooling Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Cooling Unit

Thermostat "OFF"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

INV

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

REYQ14P, 16P Cooling Operation

75

76

Cooling Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

INV

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Heating Operation

Refrigerant Circuit

Refrigerant Circuit

Heating Unit

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit Thermostat "ON"

Operation "ON"

Thermostat "ON"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi

INV

S2NPL

Tsh

INV

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Simultaneous Cooling / Heating Operation

77

78

Cooling Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Cooling Unit

Thermostat "OFF"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

INV

S2NPL

Tsh

INV

Tdi

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Cooling Oil Return Operation

Refrigerant Circuit

Refrigerant Circuit

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

INV

S2NPL

Tsh

INV

Tdi

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Heating Oil Return Operation

79

80

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "ON"

Operation "ON"

Cooling Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

Tdi INV

S2NPL

Tsh

INV

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Oil Return Operation at Simultaneous Cooling / Heating Operation

Refrigerant Circuit

Refrigerant Circuit

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

Tsh

INV

S2NPL

In operation of defrosting

Tsh

INV

Tdi

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

SVG

Right

Left

Si37-701 Refrigerant Flow for Each Operation Mode

Partial Defrosting 1 (Defrosting in the Right Unit)

81

82

Heating Unit

Operation "OFF"

EVLS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

EVHS

EVSC

EVH EVL

EVLS

EVHS

EVSC

EVH EVL

EVLS

EVL

EVH

EVHS

EVSC

BS Unit

"High temperature, high pressure gas"

Heating Unit

Thermostat "OFF"

Operation "ON"

Heating Unit Thermostat "ON"

Operation "ON"

Indoor Unit Stop Valve

Suction Stop Valve Pipe

EVJ

Stop Valve Dual Pressure Gas Pipe

Liquid Pipe

Suction Pipe

SVP

Equalizing Pipe

Equalizing Pipe

Tsc

TS_A

S1NPH

Liquid Pipe

TS_A

20SB

In operation of defrosting

Tsh

Tdi INV

S2NPL

Tsh

INV

HPS

20SA

Tg

Tdi

HPS

20SA

Tg

Tsc

Ta

Tf

Tf

EVT

Tb

TL

Tb

EVT

One Body Type

EVM

SVE

EVM

SVE

SVO

Refrigerant Regulator

SVL

Right

Left

Refrigerant Flow for Each Operation Mode Si37-701

Partial Defrosting 2 (Defrosting in the Left Unit)

Refrigerant Circuit

Refrigerant Circuit

Operation "ON" Theromstat "ON"

Cooling Unit

Operation "ON" Theromstat "OFF"

Cooling Unit

Operation "OFF"

Cooling Unit

Indoor Unit

EVH

EVHS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

EVLS

EVL

EVLS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit Tsc

SVP

Suction Pipe Stop Valve

EVJ

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

TL

Tf

SVE

EVT

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Si37-701 Refrigerant Flow for Each Operation Mode

REYQ18P, 20P Cooling Operation

83

84

Operation "ON" Theromstat "ON"

Heating Unit

Operation "ON" Theromstat "OFF"

Heating Unit

Operation "OFF"

Heating Unit

Indoor Unit

EVH

EVHS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

EVLS

EVL

EVLS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

Tf

SVE

EVT

TL

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Refrigerant Flow for Each Operation Mode Si37-701

Heating Operation

Refrigerant Circuit

Refrigerant Circuit

EVH

EVLS

EVL

EVLS

EVHS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "ON" Theromstat "ON"

Heating Unit

Operation "ON" Theromstat "ON"

Heating Unit

Operation "OFF" Theromstat "ON"

Cooling Unit

Indoor Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

TL

Tf

SVE

EVT

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Si37-701 Refrigerant Flow for Each Operation Mode

Simultaneous Cooling / Heating Operation

85

86

EVH

EVLS

EVL

EVLS

EVHS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "OFF"

Cooling Unit

Operation "ON" Theromstat "OFF"

Cooling Unit

Operation "ON" Theromstat "ON"

Cooling Unit

Indoor Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

Tf

SVE

EVT

TL

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Refrigerant Flow for Each Operation Mode Si37-701

Cooling Oil Return Operation

Refrigerant Circuit

Refrigerant Circuit

EVH

EVLS

EVL

EVLS

EVHS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Theromstat "OFF"

Heating Unit

Operation "ON" Theromstat "OFF"

Heating Unit

Operation "ON" Theromstat "ON"

Heating Unit

Indoor Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

Tf

SVE

EVT

TL

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Si37-701 Refrigerant Flow for Each Operation Mode

Heating Oil Return Operation

87

88

EVH

EVLS

EVL

EVLS

EVHS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "ON" Theromstat "ON"

Heating Unit

Operation "ON"

Heating Unit

Operation "ON" Theromstat "ON"

Cooling Unit

Indoor Unit Tsc

SVP

Suction Pipe Stop Valve

EVJ

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

Tf

SVE

EVT

TL

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Refrigerant Flow for Each Operation Mode Si37-701

Oil Return Operation at Simultaneous Cooling / Heating Operation

Refrigerant Circuit

Refrigerant Circuit

EVH

EVLS

EVL

EVLS

EVHS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

Operation "OFF"

Heating Unit

Operation "ON" Theromstat "OFF"

Heating Unit

Operation "ON" Theromstat "ON"

Heating Unit

Indoor Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

INVFAN

Tsh

Tf

SVE

EVT

TL

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

S1NPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

S2NPL

S1

Tb

Tds1

HPS

INVFAN

In operation of defrosting

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Si37-701 Refrigerant Flow for Each Operation Mode

Partial Defrosting 1 (Defrosting in the Right Unit)

89

90

Heating Unit

Heating Unit

Heating Unit

Indoor Unit

EVH

EVHS

"Low temperature, low pressure"

"High temperature, high pressure liquid"

"High temperature, high pressure gas"

EVLS

EVL

EVLS

EVHS

EVSC

EVH

EVL

EVLS

EVSC

EVH

EVL

EVHS

EVSC

BS Unit Tsc

SVP

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

SENPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

SENPL

INVFAN

In operation of defrosting

Tsh

TL

Tf

SVE

EVT

SVT

Tb

REMQ8PY1 (Multi 8HP)

EVM

SVO

Refrigerant Regulator

SVL

SVG

Tsc

EVJ Suction Pipe Stop Valve

Dual Pressure Gas Pipe Stop Valve

SVP

Equalizing Pipe Stop Valve

Liquid Pipe Stop Valve

SENPH

TS_A

Gauge Port

20SB

Tdi

HPS

20SA

INV

Tg

SENPL

S1

Tb

Tds1

HPS

INVFAN

Tsh

Tf

EVM

SVT

SVE

EVT

TL

REMQ10, 12PY1 (Multi 10, 12HP)

SVO

Refrigerant Regulator

SVL

SVG

Refrigerant Flow for Each Operation Mode Si37-701

Partial Defrosting 2 (Defrosting in the Left Unit)

Refrigerant Circuit

Si37-701

Refrigerant Flow for Each Operation Mode

Operation of refrigerant regulator 1. Recovery of refrigerant Surplus refrigerant is recovered to refrigerant regulator by opening of SVL and SVG when the indoor unit load is small. Liquid Pipe

Tsc

Right

TL EVT

Tsh

SVE

Tg

Tb

20SA

Tf

Pressure regulating valve EVM

SVL

Ta

SENPH Equalizing Pipe SVP

Refrigerant Regulator

HPS Tdi

SVG

INV SVO

SENPL

TS_A

Suction Pipe

2. Discharge of refrigerant Discharge refrigerant from refrigerant regulator by opening of SVC when the load of the outdoor unit is large. Liquid Pipe

Tsc

Right

TL EVT

Tsh

SVE

Tg

Tb

20SA

Tf

Pressure regulating valve EVM

SVL

Ta

SENPH Equalizing Pipe SVP

Refrigerant Regulator

HPS Tdi

SVG

INV SVO

Suction Pipe

TS_A

SENPL

3. Pressure regulating valve (Refrigerant regulator) The circuit will be closed when SVL, SVO, SVG are all closed. In this case, the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side, to regulate the pressure.

Refrigerant Circuit

91

Refrigerant Flow for Each Operation Mode

Si37-701

Pressure equalizing when switching operation cooling/ heating 1. When switching operation from to cooling to heating First, the electric expansion valves for EVHS, EVH, EVL and EVLS of the indoor unit will be closed. Next, open the EVHS, and it makes to balance the system pressure. Finally, EVH and EVHS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a heating circuit.

In cooling operation

Indoor Unit

BS Unit Liquid Pipe EVSC

EVHS Dual Pressure Gas Pipe EVH EVL

Cooling Unit

Suction Pipe EVLS

In equalization Indoor Unit

BS Unit Liquid Pipe EVSC

(Close)

EVHS (Open) Dual Pressure Gas Pipe EVH (Close) EVL (Close) Suction Pipe EVLS (Close)

To heating operation

Indoor Unit

BS Unit Liquid Pipe EVSC

EVHS Dual Pressure Gas Pipe EVH EVL

Heating Unit

92

Suction Pipe EVLS

Refrigerant Circuit

Si37-701

Refrigerant Flow for Each Operation Mode

2. When switching operation from heating to cooling First, the electric expansion valve and the solenoid valve for EVHS, EVH, EVL and EVLS of the indoor unit will be closed. Next, open the EVLS, and it makes to balance the system pressure. Finally, EVL and EVLS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit.

In heating operation

Indoor Unit

BS Unit Liquid Pipe EVSC

EVHS Dual Pressure Gas Pipe EVH EVL

Heating Unit

Suction Pipe EVLS

In equalization Indoor Unit

BS Unit Liquid Pipe EVSC

(Close)

EVHS (Close) Dual Pressure Gas Pipe EVH (Close) EVL (Close)

To cooling operation

Suction Pipe

In equalization

EVLS (Open)

Indoor Unit

BS Unit Liquid Pipe EVSC

EVHS Dual Pressure Gas Pipe EVH EVL

Cooling Unit

Refrigerant Circuit

Suction Pipe EVLS

93

Refrigerant Flow for Each Operation Mode

94

Si37-701

Refrigerant Circuit

Si37-701

Part 4 Function 1. Function General...................................................................................96 1.1 Symbol ...................................................................................................96 1.2 Operation Mode......................................................................................98

2. Basic Control.........................................................................................99 2.1 2.2 2.3 2.4 2.5 2.6

Normal Operation ...................................................................................99 Compressor PI Control.........................................................................100 Electronic Expansion Valve PI Control.................................................108 Step Control of Outdoor Unit Fans .......................................................108 Outdoor Unit Fan Control in Cooling Operation ...................................109 Heat Exchanger Control .......................................................................110

3. Special Control....................................................................................111 3.1 3.2 3.3 3.4 3.5 3.6 3.7

Startup Control .....................................................................................111 Large Capacity Start Up Control (Heating)...........................................113 Oil Return Operation ............................................................................114 Defrost Operation .................................................................................118 Pump-down Residual Operation ..........................................................120 Standby ................................................................................................122 Stopping Operation ..............................................................................123

4. Protection Control ...............................................................................124 4.1 4.2 4.3 4.4 4.5

High Pressure Protection Control.........................................................124 Low Pressure Protection Control..........................................................126 Discharge Pipe Protection Control .......................................................128 Inverter Protection Control ...................................................................129 STD Compressor Overload Protection.................................................131

5. Other Control.......................................................................................132 5.1 Backup Operation.................................................................................132 5.2 Demand Operation ...............................................................................132 5.3 Heating Operation Prohibition ..............................................................132

6. Outline of Control (Indoor Unit) ...........................................................133 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9

Function

Operation Flow Chart ...........................................................................133 Thermostat Control...............................................................................135 Drain Pump Control..............................................................................138 Freeze Prevention ................................................................................140 Heater Control (Optional PC Board KRP1B...is required.) ...................141 List of Swing Flap Operations ..............................................................142 Electronic Expansion Valve Control .....................................................143 Hot Start Control (In Heating Operation Only)......................................144 Louver Control for Preventing Ceiling Dirt............................................145

95

Function General

Si37-701

1. Function General 1.1 Symbol

20SA

Symbol Electric symbol

Description or function

REYQ8~16P REMQ8~16P Y2S (Heat exchanger1) Y9S (Heat exchanger2)

Y3S

Four way valve (Heat exchanger switch)

20SB

Y8S

Y2S

Four way valve (High/low pressure gas pipe switch)

DSH

–

–

Discharge pipe superheated degree

DSHi

–

–

Discharge pipe superheat of inverter compressor

DSHs

–

–

Discharge pipe superheat of standard compressor

EV

–

–

Opening of electronic expansion valve

Y1E

Electronic expansion valve for main heat exchanger

Y3E

Electronic expansion valve for sub-cooling heat exchanger

EVM

EVT

Y1E (Main1) Y3E (Main2) Y2E (Subcooling1) Y5E (Subcooling2)

EVJ

Y4E

Y2E

Electronic expansion valve at the refrigerant charge port

HTDi

–

–

Value of INV compressor discharge pipe temperature compensated with outdoor air temperature

HTDs

–

–

Value of STD compressor discharge pipe temperature compensated with outdoor air temperature

Pc

S1NPH

S1NPH

Value detected by high pressure sensor

Pe

S2NPL

S2NPL

Value detected by low pressure sensor

SH

–

–

Evaporator outlet superheat

SHS

–

–

Target evaporator outlet superheat

Y6S

Main bypass solenoid valve

SVE

Y5S (Bypass1) Y10S (Bypass2)

SVP

Y4S

Y5S

Solenoid valve for hot gas

SVL

Y3S

Y4S

Refrigerant regulator liquid pipe solenoid valve

SVG

Y1S

Y1S

Refrigerant regulator gas pipe solenoid valve

SVO

Y7S

Y7S

Refrigerant regulator exhaust pipe solenoid valve

SVT

Y6S

Y8S

Refrigerant regulator discharge pipe solenoid valve

96

Function

Si37-701

Symbol Ta TsA

Tb

Tg

Tf

Tsh

Tl

Tsc

Function General

Electric symbol

Description or function

REYQ8~16P REMQ8~16P R1T (A1P) R8T (Suction pipe1) R10T (Suction pipe2) R4T (Deicer1) R12T (Deicer2) R2T (Gas pipe1) R11T (Gas pipe2) R7T (Liquid pipe1) R15T (Liquid pipe2) R5T (Gas pipe1) R13T (Gas pipe2) R6T (Liquid pipe1) R14T (Liquid pipe2) R9T, R14T

R1T (A1P)

Outdoor air temperature

R8T

Suction pipe temperature

R4T

Heat exchanger outlet temperature at cooling

R2T

Heat exchanger gas pipe temperature

R7T

Temperature of liquid pipe between heat exchanger and main electronic expansion valve

R5T

Temperature detected with the subcooling heat exchanger outlet thermistor

R6T

Liquid pipe temperature detected with the liquid pipe thermistor

R9T

Temperature of liquid pipe between liquid shutoff valve and supercooled heat exchanger

Tc

–

–

High pressure equivalent saturation temperature

TcS

–

–

Target temperature of Tc

Te

–

–

Low pressure equivalent saturation temperature

TeS

–

–

Target temperature of Te

Tfin

R1T (A4P) (A5P)

R1T (A3P)

Inverter fin temperature

Tp

–

–

Calculated value of compressor port temperature

Tdi

R31T (R32T) R31T

Discharge pipe temperature of inverter compressor

Tds

R32T

Discharge pipe temperature of standard compressor

Function

R32T, R33T

97

Function General

1.2

Si37-701

Operation Mode Thermostat ON

Operation in stop mode

Indoor unit stop or thermostat OFF

Operation mode changeover

Pressure egualization prior to startup

Restart stanby Thermostat ON Malfunction/ Stanby

Rotation

Malfunction/ Stanby

Indoor unit stop or thermostat OFF Cooling startup

Heating startup

Thermostat ON

After completion of startup control

Malfunction/ Stanby

Indoor unit stop or thermostat OFF

Pump-down residual operation Operation mode changeover

Normal operation Large capacity Compressor PI control startup Motorized valve PI control Protection control in operation

Malfunction/ Stanby

Oil return IN conditions are met

Yes

Indoor unit stop or thermostat OFF

Oil return operation∗

No Defrost IN conditions are met

Yes

Defrosting operation∗

No Operation mode changeover

Yes

Operation mode changeover

Mode changeover∗

No Malfunction/Stand by

∗ “Oil return”, “Defrost” and “Mode changeover” move on to the next process after the completion of above function in progress even if the thermostat is OFF during the operation.

98

Function

Si37-701

Basic Control

2. Basic Control 2.1

Normal Operation

2.1.1 List of Functions in Normal Operation Part Name

Symbol

Compressor 1

Function of Functional Part Normal Simultaneous Normal Cooling Normal Heating Cooling / Heating PI control, High PI control, High PI control, High pressure protection, pressure protection, pressure protection, Low pressure Low pressure Low pressure protection, protection, protection, Td protection, Td protection, Td protection, INV protection, INV protection, INV protection, Outdoor unit heat Outdoor unit heat exchanger: exchanger: Condenser / Cooling Condenser / Cooling Cooling fan control fan control fan control Outdoor unit heat Outdoor unit heat exchanger: exchanger: Evaporator / Fan step Evaporator / Fan step Outdoor unit heat Outdoor unit heat exchanger: exchanger: Condenser / Liquid Condenser / Liquid 1375 pls pressure control pressure control Outdoor unit heat Outdoor unit heat exchanger: exchanger: Evaporator / PI control Evaporator / PI control

(Electric Symbol) M1C



Compressor 2

M2C

Compressor 3

M3C

Outdoor unit fan 1

M1F 

Outdoor unit fan 2

M2F

Y1E Electronic expansion valve (Main)

EVM Y3E

Electronic expansion valve (Supercooling) Electronic expansion valve (Refrigerant charge)

EVT

Y2E Y5E

PI control

PI control

PI control

EVJ

Y4E

80 pls

80 pls

80 pls

OFF

Outdoor unit heat exchanger: Condenser / OFF Outdoor unit heat exchanger: Evaporator / ON

Outdoor unit heat exchanger: Condenser / OFF Outdoor unit heat exchanger: Evaporator / ON

ON

OFF

OFF

ON

OFF

OFF

OFF ON for refrigerant recovery ON for refrigerant recovery ON for refrigerant discharge

OFF ON for refrigerant recovery ON for refrigerant recovery ON for refrigerant discharge

Y2S Four way valve (Heat exchanger switch)

20SA Y9S

Four way valve (High/low pressure gas pipe switch)

20SB

SVP

Y5S Y10S Y4S

SVL

Y3S

SVG

Y1S

SVO

Y7S

OFF ON for refrigerant recovery ON for refrigerant recovery ON for refrigerant discharge

SVT

Y6S

ON for oil level control ON for oil level control ON for oil level control

Solenoid valve (Main bypass) SVE Solenoid valve (Hot gas) Solenoid valve (Refrigerant regulator liquid pipe) Solenoid valve (Refrigerant regulator gas vent pipe) Solenoid valve (Refrigerant regulator exhaust pipe) Solenoid valve (Refrigerant regulator discharge pipe)

Y8S

Indoor unit actuator Thermostat ON unit Fan Stopping unit Thermostat OFF unit Thermostat ON unit Electronic expansion Stopping unit valve Thermostat OFF unit

Normal cooling Remote controller setting OFF Remote controller setting Normal opening *1 0 pls 0 pls

Normal heating Remote controller setting OFF LL Normal opening *2 192 pls 192 pls

*1. PI control : Evaporator outlet superheated degree (SH) constant. *2. PI control : Condenser outlet subcooled degree (SC) constant. *1 and 2 : Refer “6.7 Electronic Expansion Valve Control” on page 143. Electoric symbol Electronic expantion valve (EVH) Y4E Electronic expantion valve (EVL) Y5E Electronic expantion valve (EVHS) Y2E Electronic expantion valve (EVLS) Y3E Electronic expantion valve (EVSC) Y1E BS unit actuatior

Function

Normal cooling 760 pls (fully opened) 760 pls (fully opened) 480 pls (fully opened) 480 pls (fully opened) 0 pls

Nomal heating / Nomal simultaneous Cooling / Heating operation 760 pls ( fully opened ) 0 pls 480 pls ( fully opened ) 0 pls 0 pls (simultaneous Cooling / Heating operation : PI control)

99

Basic Control

2.2

Si37-701

Compressor PI Control

Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to achieve target value (TeS). Te set value (Make this setting while in Setting mode 2.) Te setting L M (Normal) H (factory setting) 3 6 7 8 9 10 11

Te : Low pressure equivalent saturation temperature (°C) TeS : Target Te value (Varies depending on Te setting, operating frequency, etc.) *On multi-outdoor-unit systems, this control is made according to values of the first-priority unit, which is detected with the pressure sensor.

[Heating operation] Controls compressor capacity to adjust Tc to achieve target value (TcS). Te set value (Make this setting while in Setting mode 2.) Tc setting L M (Normal) H (factory setting) 43 46 48

Tc : High pressure equivalent saturation temperature (°C) TcS : Target Tc value (Varies depending on Tc setting, operating frequency, etc.) *On multi-outdoor-unit systems, this control is made according to values of the first-priority unit, which is detected with the pressure sensor.

Rotation of outdoor units In order to make operating time equal for each compressor of multi connection outdoor units, outdoor units are used in rotation. However this is not applicable to single units. [Rotation of outdoor units] [System with two outdoor units] Previous time This time Next time

Outdoor Unit 1 Priority 1 Priority 2 Priority 1

Outdoor Unit 2 Priority 2 Priority 1 Priority 2

[System with three outdoor units] Previous time This time Next time One time after the next

Outdoor Unit 1 Priority 1 Priority 3 Priority 2

Outdoor Unit 2 Priority 2 Priority 1 Priority 3

Outdoor Unit 3 Priority 3 Priority 2 Priority 1

Priority 1

Priority 2

Priority 3

[Timing of outdoor rotation] In start of startup control

100

Function

Si37-701

Basic Control

„ Operating Priority and Rotation of Compressors (For multi standard connection system) Each compressor operates in the following order of priority. In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 through Pattern 3 according to the rotation of outdoor units. Pattern 1

Pattern 2

REYQ8P, 10P, 12P

INV: Inverter compressor STD1: Standard compressor 1 STD2: Standard compressor 2

Pattern 3 REYQ14P, 16P

No. 2 No. 1

No. 2 No. 1

STD1

INV2

INV

INV1

REYQ22P, 24P

REYQ18P, 20P

No. 1

No. 2 No. 3

No. 1 No. 3

No. 2 No. 4

No. 2

No. 1 No. 3

No. 2 No. 4

No. 1 No. 3

INV

INV

INV

INV

STD1

STD1

STD1

REYQ30P, 32P

REYQ26P, 28P

No. 1 No. 3

No. 2 No. 4 No. 5

No. 1 No. 3 No. 5

No. 2 No. 4 No. 6

No. 2 No. 4

No. 1 No. 3 No. 5

No. 2 No. 4 No. 6

No. 1 No. 3 No. 5

INV

STD1

INV

INV

STD1 STD2

STD1 STD2

INV

STD1 STD2

REYQ34P, 36P

No. 1

No. 2

No. 4

No. 3 No. 5 No. 6

No. 3

No. 1

No. 4

No. 2 No. 5 No. 6

No. 2

No. 3

No. 5

No. 1 No. 4 No. 6

INV

Function

INV

STD1

INV

STD1 STD2

101

Basic Control

Si37-701

REYQ38P, 40P

No. 1 No. 4

No. 2 No. 5

No. 3 No. 6 No. 7

No. 3 No. 6

No. 1 No. 4

No. 2 No. 5 No. 7

No. 2 No. 5

No. 3 No. 6

No. 1 No. 4 No. 7

INV

INV

STD1

STD1

INV

STD1 STD2

REYQ42P, 44P

No. 1 No. 4

No. 2 No. 5 No. 7

No. 3 No. 6 No. 8

No. 3 No. 6

No. 1 No. 4 No. 7

No. 2 No. 5 No. 8

No. 2 No. 5

No. 3 No. 6 No. 8

No. 1 No. 4 No. 7

INV

INV

INV

STD1

STD1 STD2

STD1 STD2

REYQ46P, 48P

No. 1 No. 4 No. 7

No. 2 No. 5 No. 8

No. 3 No. 6 No. 9

No. 3 No. 6 No. 9

No. 1 No. 4 No. 7

No. 2 No. 5 No. 8

No. 2 No. 5 No. 8

No. 3 No. 6 No. 9

No. 1 No. 4 No. 7

INV

INV

INV

STD1 STD2

STD1 STD2

STD1 STD2

* • In the case of combination of 3 outdoor units, the above diagram shows master unit, slave unit 1, and slave unit 2 from left to right. • Compressors may operate in any pattern other than those mentioned above according to the operating status.

102

Function

Si37-701

Basic Control

„ Compressor Step Control (Multi outdoor unit connection is available on the standard connection system)

Compressor operations vary with the following steps according to information in "2.2 Compressor PI Control". Furthermore, the operating priority of compressors is subject to information in "„ Operating Priority and Rotation of Compressors". Single unit installation REYQ8PY1, 10PY1, 12PY1 STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

INV 52Hz 56Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 110Hz 116Hz 124Hz 132Hz 144Hz 158Hz 166Hz 176Hz 188Hz 202Hz 210Hz 52Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 116Hz 124Hz 132Hz 144Hz 158Hz 176Hz 188Hz 202Hz 210Hz

STD1 Initial step

ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON

REYQ14PY1, 16PY1 STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

INV1 52Hz 56Hz 62Hz 66Hz 70Hz 74Hz 80Hz 88Hz 92Hz 96Hz 104Hz 110Hz 116Hz 124Hz 132Hz 144Hz 158Hz 166Hz 176Hz 188Hz 202Hz 210Hz 218Hz 232Hz 248Hz 266Hz

INV2 52Hz 56Hz 62Hz 66Hz 70Hz 74Hz 80Hz 88Hz 92Hz 96Hz 104Hz 110Hz 116Hz 124Hz 132Hz 144Hz 158Hz 166Hz 176Hz 188Hz 202Hz 210Hz 218Hz 232Hz 248Hz 266Hz

Initial step

REYQ8PY1 upper limit

Notes: 1. INV : Inverter compressor STD1 : Standard compressor 1 STD2 : Standard compressor 2 2. Depending on the operating conditions of compressors, the compressors may run in patterns other than those aforementioned.

Function

103

Basic Control

Si37-701

Two-unit multi system REYQ18PY1, 20PY1 (8+10/12HP) (To increase Step No.) STEP unit 1 unit 2 STD No. INV INV Initial step 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz 92Hz 10 96Hz 96Hz 11 104Hz 104Hz 12 110Hz 110Hz 13 116Hz 116Hz 14 124Hz 124Hz 15 132Hz 132Hz 16 144Hz 144Hz 17 158Hz 158Hz 18 166Hz 166Hz 19 176Hz 176Hz 20 80Hz 80Hz ON 21 88Hz 88Hz ON 22 96Hz 96Hz ON 23 104Hz 104Hz ON 24 116Hz 116Hz ON 25 124Hz 124Hz ON 26 132Hz 132Hz ON 27 144Hz 144Hz ON 28 158Hz 158Hz ON 29 176Hz 176Hz ON 30 188Hz 188Hz ON 31 202Hz 202Hz ON 32 210Hz 210Hz ON

(To decrease Step No.) STEP unit 1 unit 2 STD No. INV INV 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz 66Hz 14 70Hz 70Hz 15 74Hz 74Hz 16 80Hz 80Hz 17 88Hz 88Hz 18 92Hz 92Hz 19 96Hz 96Hz 20 104Hz 104Hz 21 110Hz 110Hz 22 116Hz 116Hz 23 124Hz 124Hz 24 132Hz 132Hz 25 52Hz 52Hz ON 26 62Hz 62Hz ON 27 68Hz 68Hz ON 28 74Hz 74Hz ON 29 80Hz 80Hz ON 30 88Hz 88Hz ON 31 96Hz 96Hz ON 32 104Hz 104Hz ON 33 116Hz 116Hz ON 34 124Hz 124Hz ON 35 132Hz 132Hz ON 36 144Hz 144Hz ON 37 158Hz 158Hz ON 38 176Hz 176Hz ON 39 188Hz 188Hz ON 40 202Hz 202Hz ON 41 210Hz 210Hz ON

represents the range in which “Hz” is not stepped up. REYQ22PY1, 24PY1 (10/12+12HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

(To increase Step No.) unit 1 unit 2 STD INV INV Initial step 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 80Hz 80Hz 88Hz 88Hz 92Hz 92Hz 96Hz 96Hz 104Hz 104Hz 110Hz 110Hz 116Hz 116Hz 124Hz 124Hz 132Hz 132Hz 144Hz 144Hz 158Hz 158Hz 166Hz 166Hz 176Hz 176Hz 80Hz 80Hz ON1 88Hz 88Hz ON1 96Hz 96Hz ON1 104Hz 104Hz ON1 116Hz 116Hz ON1 124Hz 124Hz ON1 132Hz 132Hz ON1 88Hz 88Hz ON2 96Hz 96Hz ON2 104Hz 104Hz ON2 124Hz 124Hz ON2 144Hz 144Hz ON2 158Hz 158Hz ON2 166Hz 176Hz ON2 176Hz 158Hz ON2 188Hz 188Hz ON2 202Hz 202Hz ON2 210Hz 210Hz ON2 202Hz 202Hz ON2 210Hz 210Hz ON2

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

(To decrease Step No.) unit 1 unit 2 STD INV INV 52Hz 56Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 80Hz 80Hz 88Hz 88Hz 92Hz 92Hz 96Hz 96Hz 104Hz 104Hz 110Hz 110Hz 116Hz 116Hz 124Hz 124Hz 132Hz 132Hz 52Hz 52Hz ON1 62Hz 62Hz ON1 68Hz 68Hz ON1 74Hz 74Hz ON1 80Hz 80Hz ON1 88Hz 88Hz ON1 96Hz 96Hz ON1 104Hz 104Hz ON1 52Hz 52Hz ON2 62Hz 62Hz ON2 74Hz 74Hz ON2 88Hz 88Hz ON2 96Hz 96Hz ON2 104Hz 104Hz ON2 124Hz 124Hz ON2 144Hz 144Hz ON2 158Hz 158Hz ON2 166Hz 166Hz ON2 176Hz 176Hz ON2 188Hz 188Hz ON2 202Hz 202Hz ON2 210Hz 210Hz ON2 202Hz 202Hz ON2 210Hz 210Hz ON2

Notes: 1. INV : Inverter compressor STD : Standard compressor Figures after ON represent the number of STD compressors in operation. 2. “Master unit”, and “slave unit” in this section are the names for control, and they will be transferred according to the priority of rotation system. 3. Depending on the operating conditions of compressors, the compressors may run in patterns other than those aforementioned.

104

Function

Si37-701

Basic Control

Three-unit multi system REYQ26PY1, 28PY1 (10/12+16HP) (To increase Step No.) STEP unit 1 unit 2 STD No. INV INV Initial step 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz 92Hz 10 96Hz 96Hz 11 104Hz 104Hz 12 110Hz 110Hz 13 116Hz 116Hz 14 124Hz 124Hz 15 132Hz 132Hz 16 144Hz 144Hz 17 158Hz 158Hz 18 166Hz 166Hz 19 176Hz 176Hz 20 80Hz 80Hz ON1 21 88Hz 88Hz ON1 22 96Hz 96Hz ON1 23 104Hz 104Hz ON1 24 116Hz 116Hz ON1 25 124Hz 124Hz ON1 26 132Hz 132Hz ON1 27 88Hz 88Hz ON2 28 96Hz 96Hz ON2 29 104Hz 104Hz ON2 30 124Hz 124Hz ON2 31 144Hz 144Hz ON2 32 92Hz 92Hz ON3 33 104Hz 104Hz ON3 34 116Hz 116Hz ON3 35 124Hz 124Hz ON3 36 144Hz 144Hz ON3 37 158Hz 158Hz ON3 38 166Hz 166Hz ON3 39 176Hz 176Hz ON3 40 188Hz 188Hz ON3 41 202Hz 202Hz ON3 42 210Hz 210Hz ON3

(To decrease Step No.) STEP unit 1 unit 2 STD No. INV INV 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz 66Hz 14 70Hz 70Hz 15 74Hz 74Hz 16 80Hz 80Hz 17 88Hz 88Hz 18 92Hz 92Hz 19 96Hz 96Hz 20 104Hz 104Hz 21 110Hz 110Hz 22 116Hz 116Hz 23 124Hz 124Hz 24 132Hz 132Hz 25 52Hz 52Hz ON1 26 62Hz 62Hz ON1 27 68Hz 68Hz ON1 28 74Hz 74Hz ON1 29 80Hz 80Hz ON1 30 88Hz 88Hz ON1 31 96Hz 96Hz ON1 32 104Hz 104Hz ON1 33 52Hz 52Hz ON2 34 62Hz 62Hz ON2 35 74Hz 74Hz ON2 36 88Hz 88Hz ON2 37 96Hz 96Hz ON2 38 52Hz 52Hz ON3 39 62Hz 62Hz ON3 40 74Hz 74Hz ON3 41 92Hz 92Hz ON3 42 104Hz 104Hz ON3 43 116Hz 116Hz ON3 44 124Hz 124Hz ON3 45 144Hz 144Hz ON3 46 158Hz 158Hz ON3 47 166Hz 166Hz ON3 48 176Hz 176Hz ON3 49 188Hz 188Hz ON3 50 202Hz 202Hz ON3 51 210Hz 210Hz ON3

represents the range in which “Hz” is not stepped up. REYQ 32PY1 (16+16HP) STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

(To increase Step No.) unit 1 unit 2 STD INV INV Initial step 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 80Hz 80Hz 88Hz 88Hz 92Hz 92Hz 96Hz 96Hz 104Hz 104Hz 110Hz 110Hz 116Hz 116Hz 124Hz 124Hz 132Hz 132Hz 144Hz 144Hz 158Hz 158Hz 166Hz 166Hz 176Hz 176Hz 80Hz 80Hz ON1 88Hz 88Hz ON1 96Hz 96Hz ON1 104Hz 104Hz ON1 116Hz 116Hz ON1 124Hz 124Hz ON1 132Hz 132Hz ON1 88Hz 88Hz ON2 96Hz 96Hz ON2 104Hz 104Hz ON2 124Hz 124Hz ON2 144Hz 144Hz ON2 92Hz 92Hz ON3 104Hz 104Hz ON3 116Hz 116Hz ON3 124Hz 124Hz ON3 144Hz 144Hz ON3 96Hz 96Hz ON4 104Hz 104Hz ON4 116Hz 116Hz ON4 124Hz 124Hz ON4 144Hz 144Hz ON4 158Hz 158Hz ON4 166Hz 166Hz ON4 176Hz 176Hz ON4 188Hz 188Hz ON4 202Hz 202Hz ON4 210Hz 210Hz ON4

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

(To decrease Step No.) unit 1 unit 2 STD INV INV 52Hz 56Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 80Hz 80Hz 88Hz 88Hz 92Hz 92Hz 96Hz 96Hz 104Hz 104Hz 110Hz 110Hz 116Hz 116Hz 124Hz 124Hz 132Hz 132Hz 52Hz 52Hz ON1 62Hz 62Hz ON1 68Hz 68Hz ON1 74Hz 74Hz ON1 80Hz 80Hz ON1 88Hz 88Hz ON1 96Hz 96Hz ON1 104Hz 104Hz ON1 52Hz 52Hz ON2 62Hz 62Hz ON2 74Hz 74Hz ON2 88Hz 88Hz ON2 96Hz 96Hz ON2 52Hz 52Hz ON3 62Hz 62Hz ON3 74Hz 74Hz ON3 96Hz 96Hz ON3 104Hz 104Hz ON3 52Hz 52Hz ON4 62Hz 62Hz ON4 74Hz 74Hz ON4 96Hz 96Hz ON4 104Hz 104Hz ON4 116Hz 116Hz ON4 124Hz 124Hz ON4 144Hz 144Hz ON4 158Hz 158Hz ON4 166Hz 166Hz ON4 176Hz 176Hz ON4 188Hz 188Hz ON4 202Hz 202Hz ON4 210Hz 210Hz ON4

Notes: 1. INV : Inverter compressor STD : Standard compressor Figures after ON represent the number of STD compressors in operation. 2. “Master unit”, and “slave unit” in this section are the names for control, and they will be transferred according to the priority of rotation system. 3. Depending on the operating conditions of compressors, the compressors may run in patterns other than those aforementioned.

Function

105

Basic Control

Si37-701

represents the range in which “Hz” is not stepped up. REYQ34PY1, 36PY1 (8+10/12+16HP) (To increase Step No.) STEP unit 1 unit 2 unit 3 No. INV INV INV 1 52Hz 52Hz 52Hz 2 56Hz 56Hz 56Hz 3 62Hz 62Hz 62Hz 4 66Hz 66Hz 66Hz 5 68Hz 68Hz 68Hz 6 70Hz 70Hz 70Hz 7 74Hz 74Hz 74Hz 8 80Hz 80Hz 80Hz 9 88Hz 88Hz 88Hz 10 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 11 12 110Hz 110Hz 110Hz 13 116Hz 116Hz 116Hz 14 124Hz 124Hz 124Hz 15 80Hz 80Hz 80Hz 16 88Hz 88Hz 88Hz 17 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 18 116Hz 116Hz 116Hz 19 124Hz 124Hz 124Hz 20 21 132Hz 132Hz 132Hz 22 88Hz 88Hz 88Hz 23 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 24 124Hz 124Hz 124Hz 25 144Hz 144Hz 144Hz 26 27 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 28 116Hz 116Hz 116Hz 29 30 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 31 158Hz 158Hz 158Hz 32 33 166Hz 166Hz 166Hz 34 176Hz 176Hz 176Hz 35 188Hz 188Hz 188Hz 36 202Hz 202Hz 202Hz 37 210Hz 210Hz 210Hz

STD Initial step

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3

(To decrease Step No.) STEP unit 1 unit 2 unit 3 No. INV INV INV 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 104Hz 9 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz 66Hz 14 70Hz 70Hz 15 74Hz 74Hz 16 52Hz 52Hz 52Hz 17 56Hz 56Hz 56Hz 18 62Hz 62Hz 62Hz 19 66Hz 66Hz 66Hz 20 68Hz 68Hz 68Hz 21 70Hz 70Hz 70Hz 22 74Hz 74Hz 74Hz 23 80Hz 80Hz 80Hz 24 88Hz 88Hz 88Hz 25 96Hz 96Hz 96Hz 26 52Hz 52Hz 52Hz 27 62Hz 62Hz 62Hz 28 68Hz 68Hz 68Hz 29 74Hz 74Hz 74Hz 30 80Hz 80Hz 80Hz 31 88Hz 88Hz 88Hz 32 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 33 34 52Hz 52Hz 52Hz 35 62Hz 62Hz 62Hz 36 74Hz 74Hz 74Hz 37 88Hz 88Hz 88Hz 38 96Hz 96Hz 96Hz 39 52Hz 52Hz 52Hz 40 62Hz 62Hz 62Hz 41 74Hz 74Hz 74Hz 42 92Hz 92Hz 92Hz 43 104Hz 104Hz 104Hz 44 116Hz 116Hz 116Hz 45 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 46 47 158Hz 158Hz 158Hz 48 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 49 50 188Hz 188Hz 188Hz 51 202Hz 202Hz 202Hz 210Hz 210Hz 210Hz 52

REYQ38PY1, 40PY1 (10/12+12+16HP) STD

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3 ON3

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

(To increase Step No.) unit 1 unit 2 unit 3 INV INV INV 52Hz 52Hz 52Hz 56Hz 56Hz 56Hz 62Hz 62Hz 62Hz 66Hz 66Hz 66Hz 68Hz 68Hz 68Hz 70Hz 70Hz 70Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 110Hz 110Hz 110Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 132Hz 132Hz 132Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 158Hz 158Hz 158Hz 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 188Hz 188Hz 188Hz 202Hz 202Hz 202Hz 210Hz 210Hz 210Hz

STD Initial step

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

(To decrease Step No.) unit 1 unit 2 unit 3 INV INV INV 52Hz 56Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 52Hz 52Hz 52Hz 56Hz 56Hz 56Hz 62Hz 62Hz 62Hz 66Hz 66Hz 66Hz 68Hz 68Hz 68Hz 70Hz 70Hz 70Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 68Hz 68Hz 68Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 158Hz 158Hz 158Hz 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 188Hz 188Hz 188Hz 202Hz 202Hz 202Hz 210Hz 210Hz 210Hz

STD

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4 ON4

Notes: 1. INV : Inverter compressor STD : Standard compressor Figures after ON represent the number of STD compressors in operation. 2. “Master unit”, and “slave unit” in this section are the names for control, and they will be transferred according to the priority of rotation system. 3. Depending on the operating conditions of compressors, the compressors may run in patterns other than those aforementioned.

106

Function

Si37-701

Basic Control

represents the range in which “Hz” is not stepped up. REYQ46PY1, 48PY1 (14/16+16+16HP)

REYQ42PY1, 44PY1 (10/12+16+16HP) (To increase Step No.) STEP unit 1 unit 2 unit 3 No. INV INV INV 1 52Hz 52Hz 52Hz 2 56Hz 56Hz 56Hz 3 62Hz 62Hz 62Hz 4 66Hz 66Hz 66Hz 5 68Hz 68Hz 68Hz 6 70Hz 70Hz 70Hz 7 74Hz 74Hz 74Hz 8 80Hz 80Hz 80Hz 9 88Hz 88Hz 88Hz 10 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 11 12 110Hz 110Hz 110Hz 13 116Hz 116Hz 116Hz 14 124Hz 124Hz 124Hz 15 80Hz 80Hz 80Hz 16 88Hz 88Hz 88Hz 17 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 18 116Hz 116Hz 116Hz 19 124Hz 124Hz 124Hz 20 21 132Hz 132Hz 132Hz 22 88Hz 88Hz 88Hz 23 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 24 124Hz 124Hz 124Hz 25 144Hz 144Hz 144Hz 26 27 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 28 116Hz 116Hz 116Hz 29 30 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 31 32 96Hz 96Hz 96Hz 33 104Hz 104Hz 104Hz 34 116Hz 116Hz 116Hz 35 124Hz 124Hz 124Hz 36 144Hz 144Hz 144Hz 37 96Hz 96Hz 96Hz 38 104Hz 104Hz 104Hz 39 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 40 41 144Hz 144Hz 144Hz 42 158Hz 158Hz 158Hz 166Hz 166Hz 166Hz 43 44 176Hz 176Hz 176Hz 45 188Hz 188Hz 188Hz 202Hz 202Hz 202Hz 46 47 210Hz 210Hz 210Hz

STD Initial step

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON4 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5

(To decrease Step No.) STEP unit 1 unit 2 unit 3 No. INV INV INV 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 104Hz 9 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz 66Hz 14 70Hz 70Hz 15 74Hz 74Hz 16 52Hz 52Hz 52Hz 17 56Hz 56Hz 56Hz 18 62Hz 62Hz 62Hz 19 66Hz 66Hz 66Hz 20 68Hz 68Hz 68Hz 21 70Hz 70Hz 70Hz 22 74Hz 74Hz 74Hz 23 80Hz 80Hz 80Hz 24 88Hz 88Hz 88Hz 25 96Hz 96Hz 96Hz 26 52Hz 52Hz 52Hz 27 62Hz 62Hz 62Hz 28 68Hz 68Hz 68Hz 29 74Hz 74Hz 74Hz 30 80Hz 80Hz 80Hz 31 88Hz 88Hz 88Hz 32 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 33 34 52Hz 52Hz 52Hz 35 62Hz 62Hz 62Hz 36 74Hz 74Hz 74Hz 37 88Hz 88Hz 88Hz 38 96Hz 96Hz 96Hz 39 52Hz 52Hz 52Hz 40 62Hz 62Hz 62Hz 41 74Hz 74Hz 74Hz 42 92Hz 92Hz 92Hz 43 104Hz 104Hz 104Hz 44 52Hz 52Hz 52Hz 45 62Hz 62Hz 62Hz 46 74Hz 74Hz 74Hz 47 96Hz 96Hz 96Hz 48 52Hz 52Hz 52Hz 49 68Hz 68Hz 68Hz 50 80Hz 80Hz 80Hz 51 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 52 53 116Hz 116Hz 116Hz 54 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 55 56 158Hz 158Hz 158Hz 57 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 58 59 188Hz 188Hz 188Hz 60 202Hz 202Hz 202Hz 61 210Hz 210Hz 210Hz

STD

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5 ON5

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

(To increase Step No.) unit 1 unit 2 unit 3 INV INV INV 52Hz 52Hz 52Hz 56Hz 56Hz 56Hz 62Hz 62Hz 62Hz 66Hz 66Hz 66Hz 68Hz 68Hz 68Hz 70Hz 70Hz 70Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 110Hz 110Hz 110Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 132Hz 132Hz 132Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 158Hz 158Hz 158Hz 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 188Hz 188Hz 188Hz 202Hz 202Hz 202Hz 210Hz 210Hz 210Hz

STD Initial step

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON4 ON5 ON5 ON5 ON5 ON5 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6

STEP No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67

(To decrease Step No.) unit 1 unit 2 unit 3 INV INV INV 52Hz 56Hz 62Hz 68Hz 74Hz 80Hz 88Hz 96Hz 104Hz 52Hz 52Hz 56Hz 56Hz 62Hz 62Hz 66Hz 66Hz 70Hz 70Hz 74Hz 74Hz 52Hz 52Hz 52Hz 56Hz 56Hz 56Hz 62Hz 62Hz 62Hz 66Hz 66Hz 66Hz 68Hz 68Hz 68Hz 70Hz 70Hz 70Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 68Hz 68Hz 68Hz 74Hz 74Hz 74Hz 80Hz 80Hz 80Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 88Hz 88Hz 88Hz 96Hz 96Hz 96Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 92Hz 92Hz 92Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 62Hz 62Hz 62Hz 74Hz 74Hz 74Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 68Hz 68Hz 68Hz 80Hz 80Hz 80Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 52Hz 52Hz 52Hz 68Hz 68Hz 68Hz 80Hz 80Hz 80Hz 96Hz 96Hz 96Hz 104Hz 104Hz 104Hz 116Hz 116Hz 116Hz 124Hz 124Hz 124Hz 144Hz 144Hz 144Hz 158Hz 158Hz 158Hz 166Hz 166Hz 166Hz 176Hz 176Hz 176Hz 188Hz 188Hz 188Hz 202Hz 202Hz 202Hz 210Hz 210Hz 210Hz

STD

ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON1 ON2 ON2 ON2 ON2 ON2 ON3 ON3 ON3 ON3 ON3 ON4 ON4 ON4 ON4 ON4 ON5 ON5 ON5 ON5 ON5 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6 ON6

Notes: 1. INV : Inverter compressor STD : Standard compressor Figures after ON represent the number of STD compressors in operation. 2. “Master unit”, and “slave unit” in this section are the names for control, and they will be transferred according to the priority of rotation system. 3. Depending on the operating conditions of compressors, the compressors may run in patterns other than those aforementioned.

Function

107

Basic Control

2.3

Si37-701

Electronic Expansion Valve PI Control

Main electronic expansion valve EVM control When the outdoor unit heat exchanging is performed via the evaporator (20SA is set to ON), this function is used to exert PI control on the electronic expansion valve (Y1E) so that the evaporator outlet superheated degree (SH) will become constant. SH = Tg - Te SH: Evaporator outlet superheated degree (°C) Tg : Suction pipe temperature (°C) detected by the heat exchanger gas pipe thermistor R2T. Te : Low pressure equivalent saturated temperature (°C)

Subcooling electronic expansion valve EVT control In order to make the maximum use of the subcool heat exchanger, this function is used to exert PI control on the electronic expansion valve (Y3E) so that the evaporator-side gas pipe superheated degree (SH) will become constant. SH = Tsh - Te SH: Evaporator outlet superheated degree (°C) Tsh:Suction pipe temperature (°C) detected by the subcool heat exchanger outlet thermistor R5T Te: Low pressure equivalent saturated temperature (°C)

Refrigerant charge electronic expansion valve EVJ control While in automatic refrigerant charge mode, this function is used to exert PI control on the opening degree of the electronic expansion valve (Y2E) in response to outdoor temperature and close the valve after the completion of refrigerant charge. For normal operation, fully open this electronic expansion valve.

2.4

Step Control of Outdoor Unit Fans

Used to control the revolutions of outdoor unit fans in the steps listed in table below, according to condition changes. Fan revolutions (rpm) STEP No. 0 1 2 3 4 5 6 7 8 9

Single type 8HP 10HP 12HP 14HP 16HP 0 0 0 0 0 285/255 285/255 285/255 285/255 285/255 315/285 315/285 315/285 360/315 360/315 360/330 360/330 360/330 395/365 395/365 430/400 430/400 430/400 480/440 480/440 590/560 590/560 590/560 560/530 560/530 690/660 690/660 690/660 760/730 760/730 820/790 820/790 820/790 960/930 960/930 920/890 920/890 951/931 1125/1095 1155/1125 920/890 920/890 1020/990 1125/1095 1200/1170 Fan1/Fan2 Fan1/Fan2 Fan1/Fan2 Fan1/Fan2 Fan1/Fan2

M8 0 350 370 400 450 540 610 680 710 796

M10 0 350 370 400 450 560 680 710 750 821

Multiple type M12 M14 M16 0 0/0 0/0 350 230/0 230/0 370 380/0 380/0 400 290/260 290/260 450 375/345 375/345 560 570/540 570/540 680 720/690 720/690 710 910/880 910/880 775 1091/1061 1091/1061 870 1136/1106 1136/1106 Fan1/Fan2 Fan1/Fan2

* Figures listed above are all those controlled while in standard mode, which vary when the system is set to high static pressure or capacity precedence mode.

108

Function

Si37-701

2.5

Basic Control

Outdoor Unit Fan Control in Cooling Operation While in cooling operation, if the outdoor temperature is low, this mode provides high-pressure control using the outdoor unit fan to retain appropriate liquid pressure, thus ensuring refrigerant circulation rate to be supplied to indoor units. Fan step 9

Pc>3.28MPa

PI control Fan step 8 PI control

Pc>3.18MPa Fan step 7 Pc>3.08MPa

PI control

Lapse of 20 sec. PI control Hold the current -1 step on +1 step on step on outdoor outdoor unit fan outdoor unit fan unit fan PI control

Function

Lapse of 20 sec.

109

Basic Control

2.6

Si37-701

Heat Exchanger Control While in heating or cool/heat simultaneous operation, ensure target condensing and evaporating temperature by changing over the air heat exchange of outdoor unit to the evaporator or the condenser in response to loads. Mode A1 A2 A3 A4 B1 B2 B3

Note:

Unit 1 Condenser Condenser Condenser Condenser Not in use Evaporator Evaporator

Unit 2 Condenser Condenser Evaporator Evaporator Evaporator Evaporator Evaporator

Unit 3 Condenser Evaporator Not in use Evaporator Not in use Not in use Evaporator

* • “GR” is a numeric value representing the current balance state that is calculated from the target condensing temperature, target evaporating temperature, current condensing temperature, and current evaporating temperature.

The mode for an single type and a multi type with two units connected is Unit 1 Mode and Unit 2 Mode. Unit 1 Mode, Unit 2 Mode and Unit 3 Mode are available only for three unit connected multi type. [Independent system] Outdoor unit

Outdoor unit

Left side Right side

Left side Right side

representing the current

Condenser Condenser

Evaporator

balanced condition and

GR > 25

Note 1. "GR" is a numeric value

–

calculated from target

GR < -20

GR > 15

Outdoor unit

condensing temperature, target evaporating

Outdoor unit

GR > 25

Left side Right side GR < -20

Evaporator Condenser

GR < -10

Left side Right side

temperature, current

Evaporator Evaporator

condensing temperature, and current evaporating temperature.

[Multi outdoor unit system] A1

Outdoor unit 2

1

3

Condenser Condenser Condenser GR > 15

A2

GR < -10

Note 1. "GR" is a numeric value representing the current balanced condition and calculated from target condensing temperature, target evaporating temperature, current condensing temperature, and current evaporating temperature. Note 2. On the system with two outdoor units, if there is no step for the destination of transition, that step will be skipped.

Outdoor unit 2

1

B1 3

Condenser Condenser Condenser GR > 25

A3

GR < -20

Outdoor unit 2

1

GR > 15

A4

GR > 25 –

2

3

Condenser Evaporator Evaporator

110

3

Evaporator

–

B2

GR < -20

GR < -10

Outdoor unit 2

1

GR > 15 GR > 25

3

Evaporator Evaporator

GR < -10

Outdoor unit 1

2

–

GR > 15

3

Condenser Condenser

Outdoor unit 1

B3

–

GR < -10

Outdoor unit 1

2

3

Evaporator Evaporator Evaporator

Function

Si37-701

Special Control

3. Special Control 3.1

Startup Control

This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined. To position the four way valve, the master and slave units simultaneously start up.

3.1.1 Startup Control in Cooling Operation Actuator

Symbol

Compressor 1 Compressor 2

Elect. symbol

Control before startup

Startup control STEP1

M1C —

Compressor 3

M2C

0 Hz

52 Hz+OFF+OFF

52Hz+OFF+OFF+2STEP / 20 sec. (Until it reaches Pc-Pe>0.39 MPa)

STEP4

Ta2.16 MPa) -1step/15 sec. (When Pc_max0.39 MPa

111

Special Control

Si37-701

3.1.2 Startup Control in Heating Operation Actuator

Symbol

Compressor 1 Compressor 2

Elect. symbol

Control before startup

Startup control STEP1

M1C —

M2C

Compressor 3

M3C

Outdoor unit fan 1

M1F —

Outdoor unit fan 2

STEP2

0 Hz

52 Hz+OFF+OFF

52Hz+OFF+OFF+2STEP / 20 sec. (Until it reaches Pc-Pe>0.39 MPa)

STEP4

20SA=ON: STEP7 20SA=OFF +1step/15 sec. (When Pc_max>2.16 MPa) -1step/15 sec. (When Pc_max2.16 MPa) -1step/15 sec. (When Pc_max0.39 MPa

Function

Si37-701

3.2

Special Control

Large Capacity Start Up Control (Heating)

For startup, oil return operation, or setup after defrosting, start up multiple compressors at a high speed according to the conditions of indoor units with thermostat ON, thus maximizing the equipment capacity.

INV STD

25

20

Pc 9

15 Pressure

8 7

10

Number of compressors

6 5

Pe

0

5 4 3

Time

Start up STD compressors at intervals of 15 seconds. [Starting conditions] OR

• The system starts heating operation with thermostat ON at a high load. • The system is in oil return operation.

[Control] 1. Start multiple INV compressors in the system at one time. 2. Start multiple STD compressors in the system at intervals of 15 seconds.

Function

113

Special Control

3.3

Si37-701

Oil Return Operation

This function is used to recover refrigerant oil that flows out from the compressor to the system side by conducting oil return operation in order to prevent the compressor from running out of refrigerant oil.

3.3.1 Cooling Oil Return Operation [Start conditions] Referring to the following conditions, start cooling oil return operation. • Integral oil rise rate is reached to specified level. • When cumulative compressor operating time exceeds 8 hours (2 hours when the power supply turns ON for OR the first time) Furthermore, the integral oil rise rate is calculated by Tc, Te, and compressor loads. The higher the compressor operating step No., the cumulative refrigerant oil consumption increases. Outdoor unit actuator

Symbol

Compressor 1 Compressor 2

M1C —

Compressor 3 Outdoor unit fan 1 Outdoor unit fan 2

Elect. symbol

M2C M3C

—

M1F M2F

Oil return operation

Operation after oil return

52Hz+ON+ON (Subsequently, constant low pressure control) Maintain the number of compressors that were used before oil return operation)

52Hz+ON+ON (Subsequently, constant low pressure control) Maintain the number of compressors that were used before oil return operation)

Cooling fan control

Cooling fan control

Four way valve (for heat exchanger selection)

20SA

Y2S Y9S

OFF

OFF

Four way valve (for highand low-pressure gas pipe selection)

20SB

Y8S

ON

ON

Electronic expansion valve (main)

EVM

Y1E Y3E

1375pls

1375pls

Electronic expansion valve (subcooling)

EVT

Y2E Y5E

SH control

SH control

Electronic expansion valve (refilling refrigerant) EVJ

Y4E

80pls

80pls

Solenoid valve (main bypass)

SVE

Y5S Y10S

ON

ON

Solenoid valve (hot gas)

SVP

Y4S

OFF

OFF

Solenoid valve (liquid pipe of refrigerant regulator)

SVL

Y3S

0pls

0pls

Solenoid valve (gas discharge pipe of refrigerant regulator)

SVG

Y1S

0pls

0pls

Solenoid valve (drain pipe SVO of refrigerant regulator)

Y7S

0pls

0pls

Solenoid valve (discharge pipe of refrigerant SVT regulator)

Y6S

0pls

0pls

End conditions

or

• After a lapse of 5 min. • TsA - Te100°C

*1: In case of multi outdoor unit system: Master unit: It conducts the operation listed in the table above. Slave units: Operating units conduct the operation listed in the table above. Non-operating units conduct the operation listed in the table above after the "Oil returning" process. (Non-operating units stop while in "Preparation" mode.)

114

Function

Si37-701

Special Control

Cooling indoor unit actuator

Oil return operation

Thermo ON unit Fan

Motorized valve

Cooling BS unit actuator

Remote controller setting

Unit not in operation

OFF

Thermo OFF unit

Remote controller setting

Thermo ON unit

Normal opening degree

Unit not in operation

192pls

Thermo OFF unit

Normal opening degree for forced thermostat ON

Elect. symbol

Oil return operation

Electronic expansion vale (EVH)

Y4E

600pls

Electronic expansion vale (EVL)

Y5E

760pls

Electronic expansion vale (EVHS)

Y2E

480pls

Electronic expansion vale (EVLS)

Y3E

480pls

Electronic expansion vale (EVSC)

Y1E

0pls

Function

115

Special Control

Si37-701

3.3.2 Heating Oil Return Operation [Start conditions] Referring to the following conditions, start heating oil return operation. • Integral oil rise rate is reached to specified level. OR • When cumulative compressor operating time exceeds 8 hours (2 hours when the power supply turns ON for the first time) Furthermore, the integral oil rise rate is calculated by Tc, Te, and compressor loads. The higher the compressor operating step No., the cumulative refrigerant oil consumption increases. Actuator

Symbol

Compressor 1 Compressor 2

Elect. symbol M1C

—

Compressor 3

M2C M3C

Outdoor unit fan 1

M1F —

Outdoor unit fan 2

M2F

Oil return operation Maintain load that was applied before oil return operation. When current circulation rate < circulation rate required for oil return operation, turn ON the STD compressor every 10 seconds (up to 3 units at maximum). When outdoor unit heat exchanger is condenser, the fan will run under cooling fan control. When outdoor unit heat exchanger is evaporator, the fan will run at the fan step 7 or 8. 20SA=ON : PI control 20SA=OFF : 418pls

EVT

Y1E Y3E Y2E Y5E

PI control

EVJ

Y4E

80pls

Four way valve (for heat changer selection)

20SA

Y2S Y9S

When outdoor unit heat exchanger is condenser, the valve will turn OFF. When outdoor unit heat exchanger is evaporator, the valve will turn ON.

Four way valve (for high- and lowpressure gas pipe selection)

20SB

Y8S

OFF

Solenoid valve (main bypass)

SVE

OFF

Solenoid valve (hot gas) Solenoid valve (liquid pipe of refrigerant regulator) Solenoid valve (gas discharge pipe of refrigerant regulator) Solenoid valve (drain pipe of refrigerant regulator) Solenoid valve (discharge pipe of refrigerant regulator)

SVP

Y5S Y10S Y4S

0pls

SVL

Y3S

0pls

SVG

Y1S

0pls

SVO

Y7S

0pls

SVT

Y6S

0pls

Electronic expansion valve (main)

EVM

Electronic expansion valve (subcooling) Electronic expansion valve (refilling refrigerant)

End conditions

or

• Pe_min2.85MPa) 480pls PI control

Heating BS unit actuator Electronic expansion vale (EVH) Electronic expansion vale (EVL) Electronic expansion vale (EVHS) Electronic expansion vale (EVLS)

Elect. symbol Y4E Y5E Y2E Y3E

Oil return operation 760pls 0pls 60pls 0pls (60pls when Pc_max>2.85MPa) 0pls (PI control at simultaneous cooling / heating operation)

Electronic expansion vale (EVSC)

Function

Y1E

117

Special Control

3.4

Si37-701

Defrost Operation

[Start conditions] Referring to the following conditions, start defrost operation. • When there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger • When there is a drop in the temperature of outdoor unit heat exchanger outlet (Tb) & • When the low pressure stays low for a certain amount of time (2 hours minimum) Furthermore, the thermal conductivity of outdoor unit heat exchanger is calculated by Tc, Te, and compressor loads. Defrosting outdoor unit actuator

Elect. Symbol symbol

Compressor 1

M1C

Defrost operation

Operation after defrost REYQ8•10•12P: upper limit 124Hz(STD Holds) REYQ14•16P: 232Hz+232Hz REMQ8P: 210Hz REMQ10•12P: 210Hz+ON REMQ14•16P: 210Hz+ON+ON

Compressor 3

M3C

REYQ8•10•12P: 232Hz+ON REYQ14•16P: 232Hz+232Hz REMQ8P: 210Hz REMQ10•12P: 210Hz+ON REMQ14•16P: 202Hz+ON+ON

Outdoor unit fan 1

M1F

OFF OFF Pcmax2.45MPa Pcmax2.45MPa

Compressor 2

—

M2C

Outdoor unit fan 2

FANSTEP4

FANSTEP4

— M2F

Pcmax>3.04MPa

Pcmax3.04MPa

Pcmax 11°C continues for a period of 90 consecutive sec. • Pc_max > 3.04MP

REMQ8 to 12P (by unit) End conditions

or

• 5 min. and 30 sec. or • Tb > 11°C for a period of 10 consecutive sec. • Pc_max > 3.04MPa

• 30 sec. • Pc_max>3.04MPa

REMQ14 and16P (by unit)

or

118

• 5 min. and 30 sec. • Tb > 11°C for a period of 30 consecutive sec. • Pc_max > 3.04MPa

Function

Si37-701

Special Control

Evaporating outdoor unit actuator

Symbol

Compressor 1 Compressor 2

—

Compressor 3

Elect. symbol

Defrost operation

Operation after defrost

M1C

REYQ8•10•12P: 232Hz+ON REYQ14•16P: 232Hz+232Hz REMQ8P: 210Hz REMQ10•12P: 210Hz+ON REMQ14•16P: 210Hz+ON+ON

Upper limit 124Hz (STD Holds) REYP400•480A: 232Hz+232Hz REMP224A: 210Hz REMP280•335A: 210Hz+ON REMP400•450A: 210Hz+ON+ON

M2C M3C

Outdoor unit fan 1 Outdoor unit fan 2 Four way valve (for heat changer selection) Four way valve (for high- and lowpressure gas pipe selection)

Fan control

Fan control

20SA

M1F M2F Y2S Y9S

ON

ON

20SB

Y8S

Holds

Holds

Electronic expansion valve (main)

EVM

PI control

PI control

Electronic expansion valve (subcooling) Electronic expansion valve (refilling refrigerant)

EVT

Y1E Y3E Y2E Y5E

SH control

0pls

EVJ

Y4E

80pls

80pls

Solenoid valve (main bypass)

SVE

OFF

OFF

Solenoid valve (hot gas) Solenoid valve (liquid pipe of refrigerant regulator) Solenoid valve (gas discharge pipe of refrigerant regulator) Solenoid valve (drain pipe of refrigerant regulator) Solenoid valve (discharge pipe of refrigerant regulator)

SVP

Y5S Y10S Y4S

OFF

OFF

SVL

Y3S

0pls

0pls

SVG

Y1S

0pls

0pls

SVO

Y7S

0pls

0pls

SVT

Y6S

0pls

0pls

Fan

Motorized valve

—

Cooling indoor unit actuator Thermo ON unit Unit not in operation Thermo OFF unit Thermo ON unit Unit not in operation Thermo OFF unit

Defrost operation

Heating indoor unit actuator Fan

Motorized valve

Defrost operation Remote controller setting OFF Remote controller setting Normal opening degree 0pls 0pls

Thermo ON unit Unit not in operation Thermo OFF unit Thermo ON unit Unit not in operation Thermo OFF unit

REYQ OFF OFF OFF 0pls 0pls 0pls

REMQ LL LL LL 224pls 0pls 224pls

Cooling BS unit actuator Electronic expansion vale (EVH) Electronic expansion vale (EVL) Electronic expansion vale (EVHS) Electronic expansion vale (EVLS) Electronic expansion vale (EVSC)

Elect. symbol Y4E Y5E Y2E Y3E Y1E

Defrost operation 0pls 760pls 0pls 480pls 0pls

Heating BS unit actuator Electronic expansion vale (EVH) Electronic expansion vale (EVL) Electronic expansion vale (EVHS) Electronic expansion vale (EVLS) Electronic expansion vale (EVSC)

Elect. symbol Y4E Y5E Y2E Y3E Y1E

Defrost operation 760pls 0pls 60pls 0pls (REYQ8~16P) 60pls (REMQ8~16P) 0pls (PI control for cool/heat concurrent operation)

Function

119

Special Control

3.5

Si37-701

Pump-down Residual Operation

3.5.1 Pump-down Residual Operation in Cooling Operation If the liquid refrigerant stays in the Evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the Evaporator while the compressor stops, the pump-down residual operation is conducted. Actuator

Symbol

Compressor 1 Compressor 2

Outdoor unit fan 2

Master unit operation

Slave unit operation

M1C —

Compressor 3 Outdoor unit fan 1

Elect. symbol

M2C

124 Hz+OFF+OFF

OFF

Fan control

Fan control

M3C —

M1F M2F

Electronic expansion valve (Main)

EVM

Y1E Y3E

1375 pls

1375 pls

Electronic expansion valve (Supercooling)

EVT

Y2E Y5E

0 pls

0 pls

Electronic expansion valve (Refrigerant charge)

EVJ

Y4E

80 pls

80 pls

Four way valve (Heat exchanger switch)

20SA

Y2S Y9S

OFF

OFF

Four way valve (High/low pressure gas pipe switch)

20SB

Y8S

ON

ON

Solenoid valve (Main bypass)

SVE

Y5S Y10S

ON

ON

Solenoid valve (Hot gas)

SVP

Y4S

OFF

OFF

Solenoid valve (Refrigerant regulator liquid pipe )

SVL

Y3S

OFF

OFF

Solenoid valve (Refrigerant regulator gas vent pipe)

SVG

Y1S

OFF

OFF

Solenoid valve (Refrigerant regulator exhaust pipe)

SVO

Y7S

OFF

OFF

Solenoid valve (Refrigerant regulator discharge pipe)

SVT

Y6S

OFF

OFF

Ending conditions

or

• 5 min. • Pe_min125°C

* Pe_min and Pc_max indicate the minimum and maximum values in the system, respectively.

120

Function

Si37-701

Special Control

3.5.2 Pump-down Residual Operation in Heating Operation and Simultaneous Cooling / Heating Operation Actuator

Symbol

Compressor 1 Compressor 2

Outdoor unit fan 2

Master unit operation

Slave unit operation

M1C —

Compressor 3 Outdoor unit fan 1

Elect. symbol

M2C

124 Hz+OFF+OFF

OFF

Fan control

Fan control

M3C —

M1F M2F

Electronic expansion valve (Main)

EVM

Y1E Y3E

When 20SA=ON: 0 pls When 20SA=OFF: 1375 pls

When 20SA=ON: 0 pls When 20SA=OFF: 1375 pls

Electronic expansion valve (Supercooling)

EVT

Y2E Y5E

0 pls

0 pls

Electronic expansion valve (Refrigerant charge)

EVJ

Y4E

80 pls

80 pls

Four way valve (Heat exchanger switch)

20SA

Y2S Y9S

When outdoor heat exchanger is evaporator: ON When outdoor heat exchanger is condenser: OFF

When outdoor heat exchanger is evaporator: ON When outdoor heat exchanger is condenser: OFF

Four way valve (High/low pressure gas pipe switch)

20SB

Y8S

OFF

OFF

Solenoid valve (Main bypass)

SVE

Y5S Y10S

OFF

OFF

Solenoid valve (Hot gas)

SVP

Y4S

OFF

OFF

Solenoid valve (Refrigerant regulator liquid pipe )

SVL

Y3S

OFF

OFF

Solenoid valve (Refrigerant regulator gas vent pipe)

SVG

Y1S

OFF

OFF

Solenoid valve (Refrigerant regulator exhaust pipe)

SVO

Y7S

OFF

OFF

Solenoid valve (Refrigerant regulator discharge pipe)

SVT

Y6S

OFF

OFF

Ending conditions

or

• 3 min. • Pe_min140°C

* Pe_min and Pc_max indicate the minimum and maximum values in the system, respectively.

Function

121

Special Control

3.6

Si37-701

Standby

3.6.1 Restart Standby Used to forcedly stop the compressor for a period of 2 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Symbol

Elect. symbol

Compressor1

—

Compressor2

Actuator

Operation REYQ8~16P

REMQ8P

REMQ10•12P

REMQ14•16P

M1C

OFF

OFF

OFF

OFF

—

M2C

OFF

—

OFF

OFF

Compressor3

—

M3C

—

—

—

OFF

Outdoor unit fan1

—

MF1

Ta>30°C: STEP4 Ta≤30°C: OFF

Ta>30°C: STEP4 Ta≤30°C: OFF

Ta>30°C: STEP4 Ta≤30°C: OFF

Ta>30°C: STEP4 Ta≤30°C: OFF

Outdoor unit fan2

—

MF2

Ta>30°C: STEP4 Ta≤30°C: OFF

—

—

Ta>30°C: STEP4 Ta≤30°C: OFF

Electronic expansion valve (Main)

EVM

Y1E Y3E

0 pls

Electronic expansion valve (Supercooling)

EVT

Y2E Y5E

0 pls

Electronic expansion valve (Refrigerant charge)

EVJ

Y4E

80 pls

Four way valve (Heat exchanger switch)

20SA

Y2S Y9S

Holds

Four way valve (High/low pressure gas pipe switch)

20SB

Y8S

Holds

Solenoid valve (Main bypass)

SVE

Y5S Y10S

OFF

Solenoid valve (Hot gas)

SVP

Y4S

OFF

Solenoid valve (Refrigerant regulator liquid pipe )

SVL

Y3S

OFF

Solenoid valve (Refrigerant regulator gas vent pipe)

SVG

Y1S

OFF

Solenoid valve (Refrigerant regulator exhaust pipe)

SVO

Y7S

OFF

Solenoid valve (Refrigerant regulator discharge pipe)

SVT

Y6S

OFF

Ending conditions

—

2 min.

3.6.2 Crankcase Heater Control In order to prevent the refrigerant from melting in the compressor oil in the stopped mode, this mode is used to control the crankcase heater. Discharge pipe temperature < 70˚C Crankcase heater OFF

122

Discharge pipe temperature > 75˚C

Crankcase heater ON

Function

Si37-701

3.7

Special Control

Stopping Operation

3.7.1 When System is in Stop Mode (Normal operation stop) This mode is used to define actuator operations when the system stops. Symbol

Elect. symbol

Compressor1

—

Compressor2 Compressor3

Actuator

Operation REYQ8~16P

REMQ8P

REMQ10•12P

REMQ14•16P

M1C

OFF

OFF

OFF

OFF

—

M2C

OFF

—

OFF

OFF

—

M3C

—

—

—

OFF

Outdoor unit fan1

—

M1F

OFF

OFF

OFF

OFF

Outdoor unit fan2

—

M2F

OFF

—

—

OFF

Electronic expansion valve (Main)

EVM

Y1E Y3E

0 pls

Electronic expansion valve (Supercooling)

EVT

Y2E Y5E

0 pls

Electronic expansion valve (Refrigerant charge)

EVJ

Y4E

80 pls

Four way valve (Heat exchanger switch)

20SA

Y2S Y9S

Holds

Four way valve (High/low pressure gas pipe switch)

20SB

Y8S

Holds

Solenoid valve (Main bypass)

SVE

Y5S Y10S

OFF

Solenoid valve (Hot gas)

SVP

Y4S

OFF

Solenoid valve (Refrigerant regulator liquid pipe )

SVL

Y3S

OFF

Solenoid valve (Refrigerant regulator gas vent pipe)

SVG

Y1S

OFF

Solenoid valve (Refrigerant regulator exhaust pipe)

SVO

Y7S

OFF

Solenoid valve (Refrigerant regulator discharge pipe)

SVT

Y6S

OFF

Ending conditions

—

Indoor unit thermostat is turned ON.

3.7.2 Stop due to Malfunction In order to protect compressors, if any of the following items has an abnormal value, the system will make "stop with thermostat OFF" and the malfunction will be determined according to the number of retry times. Item

Judgment Criteria

Malfunction Code

1. Abnormal low pressure level

0.07MPa

E4

2. Abnormal high pressure level

4.0MPa

E3

3. Abnormal discharge pipe temperature level

135°C

F3

4. Abnormal power supply voltage

Reverse-phase power supply

U1

5. Abnormal inverter current level

16.1A: 260 sec.

L8

6. Abnormal radiator fin temperature level

93°C

L4

Function

123

Protection Control

Si37-701

4. Protection Control 4.1

High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] ★ The following control is performed in the entire system. Pc_max indicates the maximum value within the system. Normal Operation Pc_max>3.47MPa

When high pressure is limited

Pc_max >3.47MPa Pc_max >3.55MPa

Upper limit compressor step=max (Max. Step)

Upper limit compressor step: 2-step down After 10 sec. Pc_max 3.64MPa High pressure standby

124

When occurring 3 times within 30 min., HPS is activated without high pressure standby, thus outputting the malfunction code “E3”.

Function

Si37-701

Protection Control

[Heating Operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the entire system. Pc_max indicates the maximum value within the system. Normal Operation

Pc_max>3.31MPa

Pc_max3.42MPa

&

After 10 sec. Pc_max>3.31MPa

Set the compressor step to STEP 1

Pc_max>3.64MPa

High pressure standby

Function

When occurring 3 times within 30 min., HPS is activated without high pressure standby, thus outputting the malfunction code “E3” .

125

Protection Control

4.2

Si37-701

Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] ★ Because of common low pressure, the following control is performed in the system. Pe_min indicates the minimum value within the system. Normal Operation

Pe_min0.39MPa

During the control of low pressure protection Single type: Compressor step of the present situation × 0.5 Multi type: 210Hz+OFF+OFF (upper) Pe_min135˚C HTdi>120˚C continues for 10 minutes or more.

Discharge pipe temperature standby

When occuring 3 times within 100 min., the malfunction code “F3” is output.

[STD compressor] HTds : Value of STD compressor discharge pipe temperature ( Tds) compensated with outdoor air temperature Tp : Value of compressor port temperature calculated by Tc and Te , and suction superheated degree.

or

HTds>120˚C continues for 5 min. or more. HTds>135˚C Tp>135˚C continues for 10 min. or more.

Discharge pipe temp. protection control not limited

Applicable STD compressor stops. After 10 min.

128

Function

Si37-701

4.4

Protection Control

Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. ★

In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence.

[Inverter overcurrent protection control] ★ Perform the following control of integrated as well as multi units for each INV compressor. Normal operation

Inverter current value >14.7A

&

Inverter current value14.7A

10 seconds Current status maintained Inverter current value 16.1A continues for 260 seconds.

Inverter current standby

Function

When occuring 4 times within 60 min., the malfunction code “L8” is output.

129

Protection Control

Si37-701

[Inverter fin temperature control] ★ Perform the following control of integrated as well as multi units for each INV compressor. Normal operation

Tfin>84˚C &

Tfin84˚C 10 seconds Current status maintained Tfin93˚C

Fin temperature standby

130

When occuring 4 times within 60 min., the malfunction code “L4” is output.

Function

Si37-701

4.5

Protection Control

STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON

Demand to operate.

*If the power supply is reset while in CT detection current value>15.0A operation prohibition mode, the prohibition timer will continue counting when the power supply is turned ON.

STD compressor OFF for 30 min.*

When occurring 3 times within 90 min., the malfunction code “ E6 ”is output.

Function

131

Other Control

Si37-701

5. Other Control 5.1

Backup Operation If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit from operating, and then conduct emergency operation only with operational compressors or outdoor units. "Emergency operation with remote controller reset" and "Emergency operation with outdoor unit PC board setting" are available operation with (2) Emergency operation with Operating method (1) Emergency remote controller reset outdoor unit PC board setting (Auto backup operation) (Manual backup operation) Backup operation by the REYQ8 ~ 16PY1 – compressor Backup operation by the Backup operation by the REYQ18 ~ 48PY1 indoor unit outdoor unit

Applicable model

(1) Emergency operation with remote controller reset [Operating method] Reset the remote controller. (Press the RUN/STOP button for 4 seconds or more.) [Details of operation] Disable the defective outdoor unit from operating, and then only operate other outdoor units. (On systems with 1 outdoor unit, this emergency operation is not available.) (2) Emergency operation with outdoor unit PC board setting [Setting method] Make setting of the compressor, "the operation of which is to be disabled", in field setting mode (setting mode 2). (For detail of the setting method, refer to page 207.) [Details of operation] Disable the compressor with "operation disable setting" made from operating and only operate other compressors. (On the system with 1 compressor "REYQ8PY1", this emergency operation is not available.)

5.2

Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adapter is required. Set item Demand 1

Demand 2

5.3

Condition Mode 1 Mode 2 Mode 3 

Content The compressor operates at approx. 60% or less of rating. The compressor operates at approx. 70% or less of rating. The compressor operates at approx. 80% or less of rating. The compressor operates at approx. 40% or less of rating.

Heating Operation Prohibition Heating operation is prohibited above 24°C ambient temperature.

132

Function

Si37-701

Outline of Control (Indoor Unit)

6. Outline of Control (Indoor Unit) 6.1

Operation Flow Chart Cooling Operation

Start

(Option)

Turn ON power supply

Aux. electric 52H heater

: OFF

Humidifier Mu : OFF

Initialize electronic expansion valve 20E Detect louver lock

LED in remote controller turns ON Cyclic operation with RUN/STOP pushbutton

Run or Stop?

(

The previous settings of air flow rate, wind direction, and temperature are displayed.

)

Swing flap

Stop

No Frost prevention condition?

Yes

Yes

No Run Is the safety device activated?

RUN indicating lamp: OFF Swing flap Yes RUN indicating lamp: Blink Malfunction code: Displayed *1

No Is the RUN indicating lamp blinking?

Microcomputer dry ON/OFF OFF

Yes

Fan: MF Operating with set air flow rate

Air flow rate display: Displayed Wind direction display: Displayed Temp. setting display: Displayed

(Option)

RUN indicating lamp: OFF Malfunction mode display: Reset

Blast *2

*4 Fan MF : Stop

Is Restart prevention operation in progress? (5 min.) No Is frost prevention operation in progress?

Electronic expansion valve 20E : Closed

Temp. control

Heating Operation

Blasting Operation

Drain pump kit Aux. electric heater

(Option)

Yes Drain pump kit MP :ON

Is test run in progress?

(Option)

*3

Yes Drain pump kit : OFF after 5-min. MP residual operation

No

Louver MA : Stop

Cooling or Heating? Heating

Cooling Operation

Microcomputer dry operation

A

RUN indicating lamp: ON

Cooling

ON

Microcomputer dry display: Reset

Press the RESET RUN/STOP pushbutton.

No

Blast or Temp. control?

Frost prevention position Cassette type: P1 Ceiling suspended type: P0

Set wind direction

No

MP : OFF *5

52H : OFF

Humidifier Mu : OFF

Electronic expansion valve

20E : Capacity control

A

(Option)

OFF Drain pump kit Thermostat status after 5-min. MP : OFF residual operation ON

Thermostat-ONoperation signal to outdoor unit: Output

Electronic expansion valve

20E : Closed Thermostat-ONoperation signal to outdoor unit: Output

(Option)

*6

*1. If any malfunction occurs, the relevant malfunction code will be displayed according to the malfunction code display of the remote controller. *2. When the aux. electric heater turns ON, the fan will stop after it conducts residual operation for 1 min. *3. When the drain pump kit turns ON, the drain pump kit will stop after it conducts residual operation for a period of 5 min. *4. If the evaporator inlet temperature is kept at not more than -5°C for a period of cumulative 10 min. or not more than -1°C for a cumulative period of 40 min., frost prevention operation will be conducted. If the evaporator inlet temperature is kept at not less than 7°C for a consecutive period of 10 min., the frost prevention operation will be reset. *5. Thermostat status

Set temperature

OFF

a

ON

Drain pump kit

MP : ON

A

Suction air temperature a=b=1 (a=b=0.5 is only available for the FXCQ, FXFQ, FXHQ, and FXKQ series.)

b

*6. The FXCQ, FXFQ, FXKQ, and FXSQ series have the drain pump kit as standard equipment.

Function

133

Outline of Control (Indoor Unit)

Si37-701

Microcomputer dry operation

Heating Operation (option)

Microcomputer dry display

*7

Drain pump kit

MP : OFF

*8 Thermostat status

OFF Fan MF : Operating in L mode after it stops for 6 min.

ON Fan MF : Operating in L mode Electronic expansion valve 20E : Superheated degree control

No

Swing flap?

Electronic 20E : expansion valve Closed

*12

(Option)

*12

Yes

Set wind direction

Swing flap

Drain pump kit OFF after 5-min. MP : residual operation

Is defrost operation in Yes progress? No *13 Is hot Yes starting in progress?

A

No

*7. Microcomputer dry display No set temperature and air flow rate of the remote controller are displayed. *8. Thermostat status Set temperature when operating the microcomputer dry mechanism.

DEFROST/HOT START indicating lamp: ON

DEFROST/HOT START indicating lamp: OFF Restart prevention operating in progress? (4 min.)

Yes

No Is test run in progress?

a

b

Suction air temperature

(1)

*14 Thermostat status

(3)

(2) (Option)

*9

Aux. electric heater 52H

Blasting Operation

Aux. electric heater 52H

: OFF

Humidifier Mu : OFF

(Option)

Drain pump kit

MP : OFF

Aux. electric heater

52H : OFF *15

Yes Swing flap

52H : ON

Humidifier Mu : ON

Is outlet air temperature drop protection in progress?

Fan MF : LL operation

No Fan MF : Operating with set air flow rate

Electronic 20E : expansion valve Closed

Electronic expansion valve 20E : Capacity control

Aux. electric heater 52H

: OFF

Humidifier Mu : OFF

Yes

Fan MF : Operating in L mode

Fan MF : Stop

No *10

Set wind direction

*11 Fan MF: Operating with set air flow rate Electronic 20E : expansion valve Closed

A *9. Blasting operation By setting the remote controller to BLAST, the fan will operate with thermostat OFF in set temperature control operation mode. *10. Set wind direction According to blasting instruction from the remote controller, the wind direction is set to 100% horizontal while in heating operation. *11. Fan According to blasting instruction from the remote controller, the fan is put into operation in LL mode while in heating operation.

134

(Option)

Aux. electric heater

: OFF

Humidifier Mu : ON

Humidifier Mu : OFF

Swing flap

(Option)

(Option)

Electronic expansion valve 20E : Open

A

*12. Wind direction When the heating thermostat turns OFF, the wind direction will be set to 100% horizontal. *13. Hot start If the condenser inlet temperature exceeds 34°C at the time of starting operation or after the completion of defrost operation, or until 3 minutes pass or Tc is above 52°C, hot starting will be conducted. *14. Thermostat status (3)

a

(2)

b -4

(1)

-2 Set temp. Suction air temp.

*15. Suction air temperature drop protection When the set temperature is below 24°C or the electronic expansion valve opening is small, the protection will be activated.

Function

Si37-701

6.2

Outline of Control (Indoor Unit)

Thermostat Control

6.2.1 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use” .)

Cooling

If there is a significant difference in the preset temperature and the suction temperature, fine adjustment control is carried out using a body thermostat sensor, or using the sensor in the remote controller near the position of the user when the suction temperature is near the preset temperature.

„ Ex: When cooling Assuming the preset temperature in the figure above is 24°C, and the suction temperature has changed from 18°C to 30°C (A → F): (This example also assumes there are several other air conditioners, the VRV system is off, and that temperature changes even when the thermostat sensor is off.) Body thermostat sensor is used for temperatures from 18°C to 23°C (A → C). Remote controller thermostat sensor is used for temperatures from 23°C to 27°C (C → E). Body thermostat sensor is used for temperatures from 27°C to 30°C (E → F).

And, assuming suction temperature has changed from 30°C to 18°C (F → A): Body thermostat sensor is used for temperatures from 30°C to 25°C (F → D). Remote controller thermostat sensor is used for temperatures from 25°C to 21°C (D → B). Body thermostat sensor is used for temperatures from 21°C to 18°C (B → A).

Function

135

Outline of Control (Indoor Unit)

Heating

Si37-701

When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature. The temperature can be controlled so the lower part of the room where the occupants are doesn’t become cold by widening the range in which thermostat sensor in remote controller can be used so that suction temperature is higher than the preset temperature.

„ Ex: When heating Assuming the preset temperature in the figure above is 24°C, and the suction temperature has changed from 18°C to 28°C (A → D):

(This example also assumes there are several other air conditioners, the VRV system is off, and that temperature changes even when the thermostat sensor is off.) Body thermostat sensor is used for temperatures from 18°C to 25°C (A → C). Remote controller thermostat sensor is used for temperatures from 25°C to 28°C (C → D). And, assuming suction temperature has changed from 28°C to 18°C (D → A): Remote controller thermostat sensor is used for temperatures from 28°C to 23°C (D → B). Body thermostat sensor is used for temperatures from 23°C to 18°C (B → A).

136

Function

Si37-701

Outline of Control (Indoor Unit)

6.2.2 Thermostat Control while in Normal Operation VRV multi systems are set at factory to thermostat control mode using the remote controller. While in normal thermostat differential control mode (i.e., factory set mode), the thermostat turns OFF when the system reaches a temperature of -1°C from the set temperature while in cooling operation or of +1°C from that while in heating operation.

Cooling operation:

Tr < Set temperature -1ºC Normal Thermostat OFF operation

Heating operation:

Tr > Set temperature +1ºC Normal Thermostat OFF operation

Tr: Temperature detected with the suction air thermistor (R1T)

While in a single remote controller group control, the body thermostat is only used for this control. Furthermore, while in heating operation, cassette-mounted indoor units conduct the thermostat control by a value compensated by -2°C for the value detected with the body thermostat. (Through field settings, the thermostat differential setting can be changed from 1°C to 0.5°C. For details on the changing procedure, refer to information on page onward.)

6.2.3 Thermostat Control in Dry Operation While in dry operation, the thermostat control is conducted according to a suction temperature at the time of starting the dry operation. Assuming that the suction air temperature at the time of starting the dry operation is Tro and the suction air temperature in operation is Tr, Tr < Tro - 1ºC when Tro ≤ 24.5ºC:

In dry operation

Thermostat OFF

Tro: Suction air temperature at the time of starting the dry operation

Tr < Tro - 1.5ºC when Tro > 24.5ºC:

In dry operation

Thermostat OFF

Tr: Temperature detected with the suction air thermistor (R1T)

Furthermore, while in dry operation mode, fans operate at L flow rate, stops for a period of six minutes while the thermostat is OFF, and then return to operation at L flow rate. (This control is used to prevent a rise in indoor temperature while in thermostat OFF mode.)

Function

137

Outline of Control (Indoor Unit)

6.3

Si37-701

Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below).

6.3.1 When the Float Switch is Tripped while the Cooling Thermostat is ON:

∗ 1. The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation.

6.3.2 When the Float Switch is Tripped while the Cooling Thermostat is OFF :

138

Function

Si37-701

Outline of Control (Indoor Unit)

6.3.3 When the Float Switch is Tripped During Heating Operation:

During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.

6.3.4 When the Float Switch is Tripped and “AF” is Displayed on the Remote Controller:

Note:

Function

If the float switch is tripped five times in succession, a drain malfunction is determined to have occurred. “AF” is then displayed as operation continues.

139

Outline of Control (Indoor Unit)

6.4

Si37-701

Freeze Prevention

Freeze Prevention by Off Cycle (Indoor Unit)

When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below. When freeze prevention is activated, the electronic expansion valve is closed, the drain pump turns ON and the fan tap is fixed to L air flow. When the following conditions for stopping are satisfied, it returns. Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min., or temperature is -5°C or less for total of 10 min. Conditions for stopping freeze prevention: Temperature is +7°C or more for 10 min. continuously 10 min. +7ºC

0ºC

–5ºC Freeze prevention operation Forced OFF by thermostat (VG005)

10 min. OR

10 min.

+7ºC

0ºC –1ºC Freeze prevention operation Forced OFF by thermostat t1

t2

t3

t4

t >40min.

[Conditions for starting when air flow direction is two-way or three-way] Conditions for starting: Temperature is 1ºC or less for a total of 15 minutes or 0ºC or less for 1 minute continuously. 10 min. +7ºC

0ºC

Freeze prevention operation Forced OFF by thermostat 1 min.

OR

10 min.

+7ºC

+1ºC Freeze prevention operation Forced OFF by thermostat t1

140

t2

t3

t4

t >15min.

Function

Si37-701

6.5

Outline of Control (Indoor Unit)

Heater Control (Optional PC Board KRP1B...is required.) The heater control is conducted in the following manner. [Normal control] While in heating operation, the heater ON control (ON/OFF) is conducted as shown on the right. [Overload control]

Set temperature OFF 2ºC

When the system is overloaded in heating operation, the heater will ON 43ºC be turned OFF in the following two manners. (1) The heater control (ON/OFF) is conducted through the liquid pipe temperature (R2T) of the indoor unit. (2) The heater control (ON/OFF) ON 50ºC is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature (Tc) according to the temperature detection through the high pressure sensor (SINPH) of the outdoor unit.

2ºC

50ºC Liquid pipe temperatur

OFF

60ºC

Condensing pressure equivalent saturated temperature OFF

[Fan residual operation] While the heater turns OFF, in order to prevent the activation of the thermal protector, the fan conducts residual operation for a given period of time after the heater turns OFF. (This operation is conducted regardless of with or without heater equipped.) Residual operation time = 100 seconds on ceiling suspended type or 60 seconds on other types

Function

141

Outline of Control (Indoor Unit)

6.6

Si37-701

List of Swing Flap Operations Swing flaps operate as shown in table below. Fan

FXFQ

FXAQ

OFF

Horizontal

Horizontal

Horizontal

Wind direction set OFF

Horizontal

Horizontal

Horizontal

Swing

OFF

Horizontal

Horizontal

Horizontal

Wind direction set OFF

Horizontal

Horizontal

Horizontal

Swing

LL

Horizontal

Horizontal

Horizontal

Wind direction set LL

Horizontal

Horizontal

Horizontal

LL Hot start from thermostat Swing OFF mode (for prevention of cold air) Wind direction set LL

Horizontal

Horizontal

Horizontal

Horizontal

Horizontal

Horizontal

OFF

Horizontal

Horizontal

Totally closed

Wind direction set OFF

Horizontal

Horizontal

Totally closed

Swing

Swing

Swing

Wind direction set L*1

Set

Set

Set

Swing

Swing

Swing

Swing

Set

Set

Set

Swing

Swing

Swing

Wind direction set Set

Set

Set

Set

Swing

Horizontal

Horizontal

Totally closed

Wind direction set OFF

Set

Horizontal

Totally closed

Swing

Swing

Swing

Swing

Set

Set

Set

Hot start from defrosting operation

Swing

Flap FXCQ FXHQ FXKQ

Defrosting operation

Heating Thermostat OFF

Swing Stop Thermostat ON in dry operation using micro computer Thermostat OFF in dry operation using micro computer Thermostat OFF in Cooling cooling

Swing

L*1

OFF or L Wind direction set Swing

Set

OFF

Stop Micro computer control (including cooling operation)

L

Wind direction set L

*1. L or LL only on FXFQ models

142

Function

Si37-701

6.7

Outline of Control (Indoor Unit)

Electronic Expansion Valve Control • EVM control of main motorized valve When an evaporator is used for outdoor unit heat exchanging (20SA = ON), this function is used to exercise the PI control on the motorized valve (Y1E) so as to keep the evaporator outlet superheated degree (SH) constant. SH = Tg - Te

SH: Evaporator outlet superheated degree (°C) Tg: Suction pipe temperature detected by the heat exchanger gas pipe thermistor R2T (°C) Te: Low pressure equivalent saturated temperature (°C)

• EVT control of supercooled motorized valve In order to make full use of the supercooled heat exchanger, this function is used to exercise the PI control on the motorized valve (Y3E) so as to keep the evaporator-side gas pipe superheated degree (SH) constant. SH = Tsh - Te

SH: Evaporator outlet superheated degree (°C) Tsh: Suction pipe temperature detected by the supercooled heat exchanger outlet thermistor R5T (°C) Te: Low pressure equivalent saturated temperature (°C)

• EVJ control of refrigerant charge motorized valve To automatically charge or refill refrigerant, this function is used to exercise the PI control on the opening degree of the motorized valve (Y2E) in response to outdoor temperatures and close the motorized valve after the completion of charging or refilling. Set the opening degree to 80 pls for normal operation.

Function

143

Outline of Control (Indoor Unit)

6.8

Si37-701

Hot Start Control (In Heating Operation Only) At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity. [Detail of operation] When either the start condition 1 or the start condition 2 is established, the operations shown below will be conducted. Defrost ending or oil return ending or Thermostat ON

Hot start control

Hot start ending conditions · lapse of 3 minutes OR · [TH2]>34˚C · "Tc">52˚C

Hot start in progress Normal control

Fan

H/L remote controller setting LL

Louver

OFF Remote controller setting

The fan is not OFF before initiating the hot start: LL The fan is OFF before initiating the hot start: OFF

Normal control

Po (Horizontal)

TH2: Temperature (°C) detected with the gas thermistor TC : High pressure equivalent saturated temperature

144

Function

Si37-701

6.9

Outline of Control (Indoor Unit)

Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled. (This feature is available on double flow, multiflow and corner types.) Existing position

P0 P1 P2 P3 P4

Ceiling soiling prevention position

Standard Setting position

Draft prevention position

(Not for Multi flow type)

P0

P0

P1

P1

P3

P4

P4

P4' P0

P1

P2

P2

P0' P1' P2'

P2

Draft prevention position

P0

P4

P3' P3

P4

P0'' P1'' P2'' P4'' P3''

Same as existing position

Range of direction adjustment Standard position

Prohibited

P0'

P1'

P2'

P3'

P4'

Separated into 5 positions (P1 - 4)

Range of direction adjustment Dirt prevention position

Prohibited

The factory set position is standard position.

Function

P0''

P1''

P2''

P3''

P4''

Separated into 5 positions (P2 - 4)

(VL012)

145

Outline of Control (Indoor Unit)

Si37-701

146

Function

Si37-701

Part 5 Test Operation 1. Test Operation ....................................................................................148 1.1 Installation Process ..............................................................................148 1.2 Procedure and Outline .........................................................................149 1.3 Operation when Power is Turned On ...................................................168

2. Outdoor Unit PC Board Layout ...........................................................169 3. Field Setting ........................................................................................170 3.1 Field Setting from Remote Controller ...................................................170 3.2 Field Setting from Outdoor Unit............................................................183

Test Operation

147

Test Operation

Si37-701

1. Test Operation 1.1

Installation Process Below Figure shows the installation process. Install in the order of the steps shown. 3. Selection of Location

4. Inspecting and Handling the Unit

5. Placing the Unit

7. Field Wiring

6. Refrigerant Piping

8. Airtight Test and Vacuum Drying

9. Pipe Insulation

10. Checking of Device and Installation Conditions

11. Additional Refrigerant Charge and Check Operation Operations which require the power to be turned on. 13. Test Run

148

Test Operation

Si37-701

1.2

Test Operation

Procedure and Outline Follow the following procedure to conduct the initial test operation after installation.

1.2.1 Check Work Prior to Turn Power Supply On Is the wiring performed as specified? Is the designated wire used? Is the wiring screw of wiring not loose? Is the grounding work completed? Is the insulation of the main power supply circuit deteriorated? Use a 500V megger tester to measure the insulation. (*1) 2 Do not use a megger tester for other circuits than 200V (or 240V) circuit. *1:Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for Terminal an extended period of time after the refrigerant charge with the stop valve open and the power supply OFF, the Dryer (1000W) refrigerant may be mixed in the compressor, thus decreasing the insulation resistance. Heat the compressor as shown on the right and then recheck the insulation.

Check the below items. 2Power wiring 2Control transmission wiring between units 2Earth wire

Check on refrigerant piping / insulation materials

Is the pipe size proper? Is the pipe insulation material installed securely? Liquid and gas pipes need to be insulated. (Otherwise causes water leak.)

Check airtight test and vacuum drying.

Have the airtight test and the vacuum drying been conducted according to the procedure in the Installation Manual?

Check on amount of refrigerant charge

Is a proper quantity of refrigerant charged? The following method is available for additional charging of refrigerant. (1) Calculate additional refrigerant quantity.

•

*

Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below. Procedure for calculating additional refrigerant charging amount (Unit: 0.1 kg) R

Total length of φ22.2-mm × 0.37 liquid pipe)

Total length of φ19.1-mm × 0.26 liquid pipe)

Total length of φ15.9-mm × 0.18 liquid pipe)

Total length of φ12.7-mm × 0.12 liquid pipe)

× 1.02 Total length of φ9.5-mm liquid pipe)

Test Operation

× 0.059

Total length of φ6.4-mm × 0.022 liquid pipe)

149

Test Operation

Si37-701

Correction amount with indoor unit System name Model REYQ8-16PY1 Model REYQ18-20PY1 Model REYQ22-24PY1 Model REYQ26PY1 + Model REYQ28-30PY1

Correction amount with a total capacity of indoor units

Correction amount 3.6 kg 1.0kg 1.5kg 2.0kg + 2.5kg

Model REYQ32-40PY1 Model REYQ42PY1 Model REYQ44-46PY1 Model REYQ48PY1

Correction amount Ratio of total capacity of the connected indoor units to the rated capacity of the outdoor Model Model unit (A) REYQ18 REYQ34 32PY1 48PY1

3.0kg 3.5kg 4.0kg 4.5kg

100%8°C. z Temperature of liquid pipe of heat exchanger (R2T) shows fixed degrees or below.

Supposed Causes

„ Defective drive of electronic expansion valve „ Defective PC board of indoor unit „ Defective relay cables

Troubleshooting

237

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

When power is supplied.

NO

Replace electronic expansion valve main body.

YES Electronic expansion valve is connected to X7A of indoor unit PC board.

NO

Shut the power supply off after connection and then restart.

YES Coil check (∗1) of electronic expansion valve drive indicates normal.

NO

Replace coil of electronic expansion valve.

YES

Relay cables short circuit or disconnected.

YES

Replace relay cables.

NO When restarting the operation after shutting the power supply off does not work, replace indoor unit PC board. ∗1: How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance value between pins and check the continuity to judge the condition.

1) White White (1) Red (5)

2) Yellow

φ1 φ3

M

3) Orange

Orange (3) 4) Blue φ2

φ4

Yellow Brown Blue 5) Red (2) (6) (4)

6) Brown

The normal products will show the following conditions:
No continuity between (1) and (2)  Resistance value between (1) and (3) is approx. 300 Ω  Resistance value between (1) and (5) is approx. 150 Ω  Resistance value between (2) and (4) is approx. 300 Ω  Resistance value between (2) and (6) is approx. 150 Ω

238

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

“A9” Indoor Unit: Malfunction of Electronic Expansion Valve Coil Remote Controller Display

A9

Applicable Models

Indoor units except FXFQ models

Method of Malfunction Detection

Check coil condition of electronic expansion valve by using microcomputer.

Malfunction Decision Conditions

Pin input for electronic expansion valve coil is abnormal when initializing microcomputer.

Supposed Causes

„ Defective drive of electronic expansion valve „ Defective PC board of indoor unit „ Defective relay cables

Troubleshooting

239

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Electronic expansion valve is connected to X7A of indoor unit PC board.

NO

Shut the power supply off after connection and then restart.

YES

Coil check (∗1) of electronic expansion valve drive indicates normal.

NO

Replace coil of electronic expansion valve.

YES

Relay cables short circuit or disconnected.

YES

Replace relay cables.

NO When restarting the operation after shutting the power supply off does not work, replace indoor unit PC board. ∗1: How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance value between pins and check the continuity to judge the condition.

1) White White (1) Red (5)

2) Yellow

φ1 φ3

M

3) Orange

Orange (3) 4) Blue φ2

φ4

Yellow Brown Blue 5) Red (2) (6) (4)

6) Brown

The normal products will show the following conditions:
No continuity between (1) and (2)  Resistance value between (1) and (3) is approx. 300 Ω  Resistance value between (1) and (5) is approx. 150 Ω  Resistance value between (2) and (4) is approx. 300 Ω  Resistance value between (2) and (6) is approx. 150 Ω

240

Troubleshooting

Si37-701

3.7

Troubleshooting by Indication on the Remote Controller

“AF” Indoor Unit: Drain Level above Limit

Remote Controller Display

AF

Applicable Models

FXCQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ, FXMQ-MF

Method of Malfunction Detection

Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

Malfunction Decision Conditions Supposed Causes

When the float switch changes from ON to OFF while the compressor is in non-operation. ★ Error code is displayed but the system operates continuously.

„ Humidifier unit (optional accessory) leaking „ Defect of drain pipe (upward slope, etc.) „ Defect of indoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Field drain piping has a defect such as upward sloping.

YES

Modify the drain piping.

NO A humidifier unit (optional accessory) is installed on the indoor unit.

YES

Check if the humidifier unit is leaking.

NO Defect of indoor unit PC board. (V2782)

Troubleshooting

241

Troubleshooting by Indication on the Remote Controller

3.8

Si37-701

“AJ” Indoor Unit: Malfunction of Capacity Determination Device

Remote controller display

AJ

Applicable Models

All indoor unit models

Method of Malfunction Detection

Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined.

Malfunction Decision Conditions

When the capacity code is not contained in the PC board’s memory, and the capacity setting adaptor is not connected.

Supposed Causes

„ The capacity setting adaptor was not installed. „ Defect of indoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

The indoor unit PC board was replaced with a replacement PC board.

NO Replace the indoor unit PC board.

YES Was the capacity setting adapter mounted when replacing the PC board? NO

YES

Replace the indoor unit PC board.

Install a capacity setting adaptor. (V2783)

242

Troubleshooting

Si37-701

3.9

Troubleshooting by Indication on the Remote Controller

“C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger

Remote Controller Display

C4

Applicable Models

All indoor unit models

Method of Malfunction Detection

Malfunction detection is carried out by temperature detected by heat exchanger thermistor.

Malfunction Decision Conditions

When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.

Supposed Causes

„ Defect of thermistor (R2T) for liquid pipe „ Defect of indoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Remove the thermistor from the indoor unit PC board, and then insert it again.

Is the thermistor normal?

YES

Normal (The malfunction is caused by faulty contact.)

NO Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter.

∗ 5 kΩ to 90 kΩ YES

NO

Replace the thermistor (R2T).

Replace the indoor unit PC board.

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

243

Troubleshooting by Indication on the Remote Controller

Si37-701

3.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display

C5

Applicable Models

All indoor unit models

Method of Malfunction Detection

Malfunction detection is carried out by temperature detected by gas pipe thermistor.

Malfunction Decision Conditions

When the gas pipe thermistor becomes disconnected or shorted while the unit is running.

Supposed Causes

„ Defect of indoor unit thermistor (R3T) for gas pipe „ Defect of indoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Remove the thermistor from the indoor unit PC board, and then insert it again.

Is the thermistor normal?

YES

Normal (The malfunction is caused by faulty contact.)

NO Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter.

∗ 5 kΩ to 90 kΩ YES

NO

Replace the thermistor (R3T).

Replace the indoor unit PC board.

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

244

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display

C9

Applicable Models

AII indoor unit models

Method of Malfunction Detection

Malfunction detection is carried out by temperature detected by suction air temperature thermistor.

Malfunction Decision Conditions

When the suction air temperature thermistor becomes disconnected or shorted while the unit is running.

Supposed Causes

„ Defect of indoor unit thermistor (R1T) for air inlet „ Defect of indoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Remove the thermistor from the indoor unit PC board, and then insert it again.

Is the thermistor normal? ∗ NO

YES

Normal (The malfunction is caused by faulty contact.)

Remove the thermistor from the indoor unit PC board, and then make resistance measurement of the thermistor using a multiple meter.

5 kΩ to 90 kΩ

YES

NO

Replace the thermistor (R1T).

Replace the indoor unit PC board.

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

245

Troubleshooting by Indication on the Remote Controller

Si37-701

3.12 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display

CJ

Applicable Models

AII indoor unit models

Method of Malfunction Detection

Malfunction detection is carried out by temperature detected by remote controller air temperature thermistor. (Note:)

Malfunction Decision Conditions

When the remote controller air temperature thermistor becomes disconnected or shorted while the unit is running.

Supposed Causes

„ Defect of remote controller thermistor „ Defect of remote controller PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Clear the malfunction code history. (While in inspection mode, press and hold the “ON/OFF” button for a period of five seconds or more.) Is "CJ" displayed on the remote controller?

YES

NO

Replace remote controller. External factor other than equipment malfunction. (for example, noise etc.) (V2787)

Note:

∗1: How to delete “the record of malfunction codes”.

Press the “Operate/ Stop” button for 4 seconds and more while the malfunction code is displayed in the inspection mode. ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

246

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.13 “E1” Outdoor Unit: PC Board Defect Remote Controller Display

E1

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit.

Malfunction Decision Conditions

When the communication conditions in the hardware section between the indoor unit and the outdoor unit are not normal.

Supposed Causes

„ Defect of outdoor unit PC board (A1P) „ Defective connection of inside/ outside relay wires

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Turn off the power once and turn on again.

Return to normal?

YES

External factor other than malfunction (for example, noise etc.).

NO

Check if inside / outside relay wires of outdoor main PC board is disconnected.

YES

Connect the inside/ outside relay wires correctly.

NO

Replace outdoor main PC board (A1P). (V3064)

Troubleshooting

247

Troubleshooting by Indication on the Remote Controller

Si37-701

3.14 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display

E3

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Abnormality is detected when the contact of the high pressure protection switch opens.

Malfunction Decision Conditions

Error is generated when the HPS activation count reaches the number specific to the operation mode. (Reference) Operating pressure of high pressure switch Operating pressure: 4.0MPa Reset pressure: 2.85MPa

Supposed Causes

„ „ „ „ „

248

Actuation of outdoor unit high pressure switch Defect of High pressure switch Defect of outdoor unit main PC board (A1P) Instantaneous power failure Faulty high pressure sensor

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check for the points shown below.
Is the stop valve open?  Is the HPS connector properly connected to the main PC board?  Does the high pressure switch have continuity?

Are the three points above OK?

NO

Rectify defective points, if any.

YES
Mount a pressure gauge on the high-pressure service port.  Reset the operation using the remote controller, and then restart the operation.

Does the stop due to malfunction (E3) recur?

YES

Is the HPS operating value normal (i.e., 4.0MPa)?

Replace the HPS.

YES

NO

Are the characteristics of the high pressure sensor normal? (See ∗1.)

NO

NO

Replace the high pressure sensor.

YES Service Checker Connect the service checker to compare the “high pressure” value and the actual measurement value by pressure sensor (Refer to ∗1) by using the service checker.

Check if the “high pressure” value and the actual measurement value by pressure sensor are the same.

NO

Replace main PC board ( A1P).

YES · The high pressure sensor is normal, and the pressure detected with the PC board is also normal. · The high pressure has really become high. Referring to information on P340, remove the causes by CHECK 5 which the high pressure has become high.

∗1: Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge. (As to the voltage of the pressure sensor, make measurement of voltage at the connector, and then convert it to pressure according to information on P407.) ∗2: Make measurement of voltage of the pressure sensor. +5V

Connector for high pressure sensor (Red) (4)

Red

(3)

Black

(2) Micro controller A/D input

(1)

High pressure sensor

White

Make measurement of DC voltage between these wires.

Troubleshooting

249

Troubleshooting by Indication on the Remote Controller

Si37-701

3.15 “E4” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display

E4

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Abnormality is detected by the pressure value with the low pressure sensor.

Malfunction Decision Conditions

Error is generated when the low pressure is dropped under compressor operation. Operating pressure:0.07MPa

Supposed Causes

„ „ „ „

250

Abnormal drop of low pressure (Lower than 0.07MPa) Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened.

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

NO

Is the stop valve open?

Open the stop valve.

YES
Mount a pressure gauge on the low-pressure service port.  Reset the operation using the remote controller, and then restart the operation.

Are the characteristics of the low pressure sensor normal? (See ∗1.)

NO

Replace the low pressure sensor.

YES Service Checker Connect the service checker to compare the “low pressure” value and the actual measurement value by pressure sensor (Refer to ∗1) by using the service checker.

Check if the “low pressure” value and the actual measurement value by pressure sensor are the same.

NO

Replace main PC board (A1P).

YES · The low pressure sensor is normal, and the pressure detected with the PC board is also normal. · The low pressure has really become low.

CHECK 6 Referring to information on P341, remove the causes by which the low pressure has become low.

∗1: Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge. (As to the voltage of the pressure sensor, make measurement of voltage at the connector, and then convert it to pressure according to information on P407.) ∗2: Make measurement of voltage of the pressure sensor. +5V Connector for low pressure sensor (Blue)

Micro controller A/D input

(4)

Red

(3)

Black

(2)

White

Low pressure sensor

(1)

Make measurement of DC voltage between these wires.

Troubleshooting

251

Troubleshooting by Indication on the Remote Controller

Si37-701

3.16 “E5” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display

E5

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Inverter PC board takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phasecurrent waveform.

Malfunction Decision Conditions

This malfunction will be output when the inverter compressor motor does not start up even in forced startup mode.

Supposed Causes

„ „ „ „ „

252

Inverter compressor lock High differential pressure (0.5MPa or more) Incorrect UVW wiring Faulty inverter PC board Stop valve is left in closed.

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open.

NO

Local factor Open the stop valve.

YES Check if the relay wires to the compressor are correct.

NO

YES Check if the connection of UVW phase order is correct.

NO

YES Power OFF

Check if the wiring is the same as in the electric wiring diagram.

YES The insulation resistance of the compressor is low (not more than 100kΩ).

Replace the connecting wires and ensure right connection of the connector. Ensure correct connection. W U

NO Check if the wiring has any error in mistake for inverter compressor. YES

V Ensure correct connection.

Replace the compressor.

NO The compressor coil has disconnection of wires.

YES

NO Restart and check the operation. Check if the condition occurs again.

NO

YES Check if the start mode is in the high differential pressure (not less than 0.5 MPa).

YES

Conclude the work There is a possibility of defect of pressure equalizing. Check the refrigerant circuit.

Defect of pressure equalizing Check the refrigerant circuit.

NO Power ON

Remove the connection between the compressor and inverter. Set the power transistor check mode ON using “Setting mode 2” of the outdoor unit PC board. Measure the inverter output voltage (∗2). Note: Measurement should be made while the frequency is stable.

Check if the inverter output voltage between 3 phases is within ± 5V.

NO

Replace the inverter PC board.

YES

Replace the inverter compressor. ∗1: Pressure difference between high pressure and low pressure before starting. ∗2: The quality of power transistors/ diode modules can be judged by executing Check 4 (P339).

Troubleshooting

253

Troubleshooting by Indication on the Remote Controller

Si37-701

3.17 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display

E6

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detects the overcurrent with current sensor (CT).

Malfunction Decision Conditions

Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds. „ 400 V unit : 15.0 A

Supposed Causes

„ „ „ „ „ „

Closed stop value Obstacles at the air outlet Improper power voltage Faulty magnetic switch Faulty compressor Faulty current sensor (A6P, A7P)

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Is the stop valve open? YES Obstacle exists around the air outlet.

NO

YES

Open the stop valve.

Remove the obstacle.

NO Is the power supply voltage normal? YES Is the magnetic switch (K2M, K3M) normal? (∗1) YES

NO

NO

Correct the power voltage.

Replace the magnetic switch.

Check the wiring from power supply ~ current sensor (A6P, A7P) ~ MgS (K2M, K3M) ~ compressor Is above wiring correct?

NO

Correct wiring.

YES Is current sensor correct? ∗1 YES

NO

Replace the corresponding current sensor (A6P or A7P). Replace compressor. (V3051)

Note:

254

∗1 One of the possible factors may be chattering due to rough MgS contact. ∗2 Abnormal case „ The current sensor value is 0 during STD compressor operation. „ The current sensor value is more than 15.0A during STD compressor stop. Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.18 “E7” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display

E7

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detect a malfunction based on the current value in the INVERTER PC board (as for motor 2, current value in the fan PC board). Detect a malfunction for the fan motor circuit based on the number of rotation detected by hole IC during the fan motor operation.

Malfunction Decision Conditions

„ Overcurrent is detected for INVERTER PC board (A2P) or fan INVERTER PC board (A5P)

(System down is caused by 4 times of detection.) „ In the condition of fan motor rotation, the number of rotation is below the fixed number for

more than 6 seconds. (System down is caused by 4 times of detection.) Supposed Causes

Troubleshooting

„ „ „ „

Failure of fan motor Defect or connect ion error of the connectors/ harness between the fan motor and PC board The fan can not rotate due to any foreign substances entangled. Clear condition: Continue normal operation for 5 minutes

255

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check in the monitor mode 12HP ~18HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code “E7” in the monitor mode of outdoor unit PC board. (Refer to P218 - P219 for how to check)

Cut the power supply OFF and wait for 10 minutes.

Check if any foreign substances around the fan.

YES

Remove the foreign substances.

NO Check the connection status of the connectors Fan motor 1: relay connector or X1A, X2A of compressor inverter PC board. Fan motor 2: relay connector or X1A, X2A of fan inverter PC board.

Check if any connector is disconnected.

YES

Insert the connector.

NO Check the color of relay connectors Fan motor 1: Both power supply wire and signal wire are all white. Fan motor 2: Both power supply wire and signal wire are red in the PC board side and white in the motor side.

Relay connectors have any connection error. NO

YES

Correct the connection of the relay connectors.

Go on to the next page.

256

~

12HP

~

5HP 8HP

18HP

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Continued from the previous page.

No continuity of fuse (FIU) on the fan inverter PC board.

YES

Replace fan inverter PC board.

NO Unable to rotate the fan manually with ease when removing the connector of the fan motor.

YES

Replace the corresponding fan motor.

NO Resistance value between the power supply wire terminal of fan motor and the motor frame (metal) is 1MΩ and below.

YES

Replace the corresponding fan motor.

NO Check 1 (Referring to the information on P337) Check fan motor connector (power supply wire)

The resistance value between UVW phases of fan motor is out of balance, or short circuit between UVW phases.

YES

Replace the corresponding fan motor.

NO Check 2 (Referring to the information on P337) Check fan motor connector (signal wire)

The signal wire short circuits between Vcc and GND and between UVW and GND.

YES

Replace the corresponding fan motor.

NO Put the power supply ON to check the following LED lamps. 1) HAP lamp on the compressor PC board (A2P) 2) HAP lamp on the fan inverter PC board (A5P)

HAP lamp for the A5P does not blink on the condition that HAP lamp for A2P is blinking.

YES

Replace fan inverter PC board.

NO Replace fan motor 2.

Troubleshooting

257

Troubleshooting by Indication on the Remote Controller

Si37-701

3.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E~Y5E) Remote Controller Display

E9

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Check disconnection of connector To be detected based on continuity existence of coil of electronic expansion valve

Malfunction Decision Conditions

No current is detected in the common (COM [+]) when power supply is ON.

Supposed Causes

„ Disconnection of connectors for electronic expansion valve (Y1E) „ Defect of moving part of electronic expansion valve „ Defect of outdoor unit main PC board (A1P)

258

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Caution

Turn power supply off, and turn power supply on again. YES

Return to normal? NO

External factor other than malfunction (for example, noise etc.).

Check the electronic expansion valve corresponding to the malfunction code “E9” in the monitor mode. (Refer to P218~219 for how to check.) When Check 4 shows as follows: → Electronic expansion valve for main use (Y1E, Y3E for Single, Y1E for Multi) When Check 4 shows as follows: → Electronic expansion valve for refrigerant charge (Y4E for Single, Y2E for Multi) When Check 4 shows as follows: → Electronic expansion valve for subcooling (Y2E, Y5E for Single, Y3E for Multi) Explanation of “ ” Master unit Slave unit 1 Slave unit 2 System

The connector of outdoor unit PC board (A1P) for electronic expansion valve is connected.

NO

Ensure correct connection.

YES

The coil resistance of electronic expansion valve isnormal. (Refer to ∗1) YES

NO

Replace the connecting cable.

Replace outdoor unit PC board (A1P). (V3067)

∗ Make measurement of resistance between the connector pins, and then make sure the resistance falls in the range of 40 to 50Ω.

(Orange) 1 (Red) 2 (Yellow) 3 (Black) 4 5

Measuring points Judgment criteria 1-6 2-6 40~50Ω 3-6 4-6

COM[+] (Gray) 6 (V3067)

Troubleshooting

259

Troubleshooting by Indication on the Remote Controller

Si37-701

3.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display

F3

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor.

Malfunction Decision Conditions

When the discharge pipe temperature rises to an abnormally high level (135 °C and above) When the discharge pipe temperature rises suddenly (120 °C and above for10 successive minutes)

Supposed Causes

„ Faulty discharge pipe temperature sensor „ Faulty connection of discharge pipe temperature sensor „ Faulty outdoor unit PC board

260

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Connect the service checker. Press reset and start operation again.

Check if discharge pipe thermister property is normal. (∗1)

NO

Replace discharge pipe thermister.

YES Service Checker Connect the service checker to compare the temperature of discharge pipe by using service checker with actual measurement value of discharge pipe thermister (Refer to ∗1).

Check if temperature of discharge pipe by using service checker is the same with actual measurement value of discharge pipe thermister.

NO

Replace main PC board ( A1P).

· Discharge pipe thermister is normal and the temperature detection of the main PC board is also normal. · Actually the temperature of discharge pipe is high.

Check 3 Remove the factor of overheat operation referring to P338. ∗1: Compare the resistance value of discharge pipe thermister and the value based on the surface thermometer. (Refer to P395 for the temperature of thermister and the resistance property)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

261

Troubleshooting by Indication on the Remote Controller

Si37-701

3.21 “F6” Outdoor Unit: Refrigerant Overcharged Remote Controller Display

F6

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Excessive charging of refrigerant is detected by using the outside air temperature, heat exchanging deicer temperature and liquid pipe temperature during a check run.

Malfunction Decision Conditions

When the amount of refrigerant, which is calculated by using the outside air temperature, heat exchanging deicer temperature and liquid pipe temperature during a check run, exceeds the standard.

Supposed Causes

„ „ „ „

Refrigerant overcharge Misalignment of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the mounting condition of the temperature sensors of the outside air thermistor, heat exchanging deicer thermistor and liquid pipe thermistor in the piping.

Are the above thermistor installed on pipes correctly?

NO

Install thermistor correctly.

YES Remove the outside air thermistor, heat exchanging deicer thermister and the liquid pipe thermistor from the outdoor PC board and measure resistance with a tester.

Is the characteristic of the above thermistor normal? YES

NO

Replace thermistor.

Refrigerant overcharged. (V2797)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

262

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.22 “F9” Malfunction of BS Unit Electronic Expansion Valve

Troubleshooting

263

Troubleshooting by Indication on the Remote Controller

264

Si37-701

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.23 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display

H7

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detection of abnormal signal from fan motor.

Malfunction Decision Conditions

In case of detection of abnormal signal at starting fan motor.

Supposed Causes

„ Abnormal fan motor signal (circuit malfunction) „ Broken, short or disconnection connector of fan motor connection cable „ Fan Inverter PC board malfunction (A2P)

Troubleshooting

265

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Caution

Check the fan motor corresponding to the malfunction code “H7” in the monitor mode. (Refer to P226~227 for how to check) When check 3 shows as follows: → Fan motor 1 (M1F) When check 3 shows as follows: → Fan motor 2 (M2F) Identify outdoor unit based on Check 4. Explanation for “

”

Master unit Slave unit 1 Slave unit 2 System

Cut the power supply off. Check if signal wire connector for the corresponding fan motor is normal.

NO

Ensure correct connection.

NO

Replace fan motor.

YES Check the connector of the fan motor (∗1).

Check if the resistance of the fan motor lead wire between Vcc and UVW and between GND and UVW are balanced.

YES ∗1. Check procedure for fan motor connector (1) Power OFF the fan motor. (2) Remove the connector (X2A or X4A) on the PC board to measure the following resistance value. Judgment criteria: resistance value between each phase is within ±20%

Replace inverter PC board. For fan motor 1: replace inverter PC board (A2P) For fan motor 2: replace fan inverter PC board (A5P)

Connector for signal wires (X2A or X4A)

X2A

5 Gray

GND

4 Pink

Vcc

3 Orange

W

2 Blue

V

1 Yellow

U

Measure the resistance between VccUVW and GND-UVW.

(V2799)

266

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.24 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display

H9

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from the temperature detected by the outdoor air thermistor.

Malfunction Decision Conditions

When the outside air temperature thermistor has short circuit or open circuit.

Supposed Causes

„ Defective thermistor connection „ Defect of thermistor (R1T) for outdoor air „ Defect of outdoor unit PC board (A1P)

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P222~223)

Connector is connected to X18A of outdoor PC board (A1P).

NO

Connect the connector and turn on again.

YES Resistance is normal when measured after disconnecting the thermistor (R1T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) YES

NO

Replace the thermistor (R1T)

Replace outdoor unit PC board (A1P). (V3070)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

267

Troubleshooting by Indication on the Remote Controller

Si37-701

3.25 “J2” Outdoor Unit: Current Sensor Malfunction Remote Controller Display

J2

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected according to the current value detected by current sensor.

Malfunction Decision Conditions

When the current value detected by current sensor becomes 5A or lower, or 40A or more during standard compressor operation.

Supposed Causes

„ Faulty current sensor (A6P, A8P) „ Faulty outdoor unit PC board „ Defective compressor

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the current sensor corresponding to the malfunction code “J2” in the monitor mode. (Refer to P226~227 for how to check) Check 4 shows as follows: → Current sensor for constant rate compressor 1 Check 4 shows as follows: → Current sensor for constant rate compressor 2 Explanation for “ ” Master unit Slave unit 1 Slave unit 2 System

Is the connector for current sensor connected to X25A, X26A on outdoor unit PC board (A1P)?

NO

Connect the connector, and operate unit again.

YES Are the current sensors inversely connected to two STD compressors?

YES

Correct the connections between the current sensors and the STD compressors.

NO Applicable compressor coil wire is broken. NO Is the current sensor mounted on the T-phase (A6P) and R-phase (A8P) wire? YES

YES

NO

Replace compressor.

Mount the current sensor correctly, and operate unit again.

Replace current sensor or outdoor unit PC board. (V3071)

268

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.26 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31, 32T, 33T) Remote Controller Display

J3

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.

Malfunction Decision Conditions

When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.

Supposed Causes

„ Defect of thermistor (R31T, R32T, R33T) for outdoor unit discharge pipe „ Defect of outdoor unit PC board (A1P) „ Defect of thermistor connection

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which discharge thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Connector is connected to X29A of outdoor unit PC board (A1P).

NO

Connect the connector and turn on again.

YES Resistance is normal when measured after disconnecting the thermistor R31, 32T or R33T from the outdoor unit PC board. (2.5kΩ to 1.3kΩ) YES

NO

Replace the thermistor (R31, 32T or R33T)

Replace outdoor unit PC board (A1P). (V3072)

The alarm indicator is displayed when the fan is being used also. ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

269

Troubleshooting by Indication on the Remote Controller

Si37-701

3.27 “J4” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T) Remote Controller Display

J4

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detect malfunction based on the temperature detected by each thermistor.

Malfunction Decision Conditions

In operation, when a thermistor is disconnected or short circuits.

Supposed Causes

„ Defective connection of thermistor „ Defective thermistor „ Defective outdoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Connector is connected to X30A of outdoor PC board (A1P).

NO

Connect the connector and turn on again.

YES Resistance is normal when measured after disconnecting the thermistor (R2T or R11T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) YES

NO

Replace the thermistor (R2T or R11T)

Replace outdoor unit PC board (A1P). (V3070)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

270

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.28 “J5” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction Pipe Remote Controller Display

J5

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

Malfunction Decision Conditions

When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.

Supposed Causes

„ Defect of thermistor (R8T or R10T) for outdoor unit suction pipe „ Defect of outdoor unit PC board (A1P) „ Defect of thermistor connection

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which discharge thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Connector is connected to X30A, of outdoor unit PC board. (A1P)

NO

Connect the connector and turn on again.

YES Resistance is normal when measured after disconnecting the thermistor (R8T or R10T) from the outdoor unit PC board. (1.8kΩ to 800kΩ) YES

NO

Replace the thermistor R8T or R10T.

Replace outdoor unit PC board (A1P). (V3073)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

271

Troubleshooting by Indication on the Remote Controller

Si37-701

3.29 “J6” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger Remote Controller Display

J6

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from the temperature detected by the heat exchanger thermistor.

Malfunction Decision Conditions

When a short circuit or an open circuit in the heat exchange thermistor is detected.

Supposed Causes

„ Defect of thermistor (R4T or R12T) for outdoor unit coil „ Defect of outdoor unit PC board (A1P) „ Defect of thermistor connection

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Connector is connected to X30A of outdoor unit PC board (A1P).

NO

Connect the connector and turn on again.

YES Resistance is normal when measured after disconnecting the thermistor NO R4T or R12T from the indoor unit PC board. (1.8kΩ to 800kΩ) YES

Replace the thermistor R4T or R12T.

Replace outdoor unit PC board (A1P). (V3074)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

272

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.30 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T), (R9T) or (R14T) Remote Controller Display

J7

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected according to the temperature detected by liquid pipe thermistor.

Malfunction Decision Conditions

When the liquid pipe thermistor is short circuited or open.

Supposed Causes

„ Faulty liquid pipe thermistor 1 (R6T), (R9T) or (R14T) „ Faulty outdoor unit PC board „ Defect of thermistor connection

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PC board (A1P)?

NO

Connect the connector and operate unit again.

YES Is the resistance measured after removing the thermistor (R6T) (R9T) or (R14T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) YES

NO

Replace thermistor (R6T) (R9T) or (R14T).

Replace outdoor unit PC board (A1P). (V3075)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

273

Troubleshooting by Indication on the Remote Controller

Si37-701

3.31 “J8” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) Remote Controller Display

J8

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected according to the temperature detected by liquid pipe thermistor.

Malfunction Decision Conditions

When the liquid pipe thermistor is short circuited or open.

Supposed Causes

„ Faulty liquid pipe thermistor 2 (R7T or R15T) „ Faulty outdoor unit PC board „ Defect of thermistor connection

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Is the connector for liquid pipe thermistor connected to X30A on outdoor unit PC board (A1P)?

NO

Connect the connector and operate unit again.

YES Is the resistance measured after removing the thermistor (R7T or R15T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) YES

NO

Replace thermistor (R7T or R15T).

Replace outdoor unit PC board (A1P). (V3075)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

274

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.32 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) Remote Controller Display

J9

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

Malfunction Decision Conditions

When the subcooling heat exchanger gas pipe thermistor is short circuited or open.

Supposed Causes

„ Faulty subcooling heat exchanger gas pipe thermistor (R5T or R13T) „ Faulty outdoor unit PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Confirm which thermistor is abnormal using outdoor unit "monitor mode". (Refer to P226~227)

Is the connector for subcooling heat exchanger gas pipe thermistor connected to X30A on outdoor unit PC board (A1P)?

NO

Connect the connector and operate unit again.

YES Is the resistance measured after removing the thermistor (R5T or R13T) from outdoor unit PC board normal? (1.8kΩ to 800kΩ) YES

NO

Replace thermistor (R5T or R13T).

Replace outdoor unit PC board (A1P). (V3075)

∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

275

Troubleshooting by Indication on the Remote Controller

Si37-701

3.33 “JA” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display

JA

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from the pressure detected by the high pressure sensor.

Malfunction Decision Conditions

When the high pressure sensor is short circuit or open circuit. (Not less than 4.22MPa, or 0.01MPa and below)

Supposed Causes

„ „ „ „

Defect of high pressure sensor system Connection of low pressure sensor with wrong connection. Defect of outdoor unit PC board. Defective connection of high pressure sensor

Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Caution

1.Set the high pressure gauge upright. 2.Connect the checker for VRV to the gauge. Are the characteristics of the high pressure sensor normal? (Make a comparison between the voltage characteristics (∗2) and the gauge pressure.)

NO

Replace the high pressure sensor.

YES If the PCB pressure detection normal? (Make a comparison between the checker pressure data and the voltage characteristics (∗2).)

NO

Replace the main PC board.

YES Reset the operation, and then restart the outdoor unit.

Are the characteristics of the high pressure sensor normal?

NO

Replace the high pressure sensor.

YES

Replace the main PC board.

∗1: Pressure sensor subject to malfunction code Malfunction code Pressure sensor subject to malfunction code Electric symbol JA

High pressure sensor

S1NPH (V2806)

276

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

∗2: Voltage measurement point

∗2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P407.

Troubleshooting

277

Troubleshooting by Indication on the Remote Controller

Si37-701

3.34 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display

JC

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from pressure detected by low pressure sensor.

Malfunction Decision Conditions

When the low pressure sensor is short circuit or open circuit. (Not less than 1.77MPa, or -0.01MPa and below)

Supposed Causes

„ „ „ „

Defect of low pressure sensor system Connection of high pressure sensor with wrong connection. Defect of outdoor unit PC board. Defective connection of low pressure sensor

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

1.Set the low pressure gauge upright. 2.Connect the checker for VRV to the gauge. Are the characteristics of the low pressure sensor normal? (Make a comparison between the voltage characteristics (∗1) and the gauge pressure.)

NO

Replace the low pressure sensor.

YES If the PC board pressure detection normal? (Make a comparison between the checker pressure data and the voltage characteristics (∗1).)

NO

Replace the main PC board.

YES Reset the operation, and then restart the outdoor unit.

Are the characteristics of the low pressure sensor normal? YES

NO

Replace the low pressure sensor.

Replace the main PC board. (V2808)

278

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

∗1: Voltage measurement point

∗2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P407.

Troubleshooting

279

Troubleshooting by Indication on the Remote Controller

Si37-701

3.35 “L1” Outdoor Unit: Defective Inverter PC Board Remote Controller Display

L1

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected based on the current value during waveform output before starting compressor. Malfunction is detected based on the value from current sensor during synchronous operation when starting the unit.

Malfunction Decision Conditions

Overcurrent (OCP) flows during waveform output. Malfunction of current sensor during synchronous operation. IPM failure.

Supposed Causes

„ Inverter PC board (A2P) z IPM failure z Current sensor failure z Drive circuit failure

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Power off the unit then supply power again.

Check if the unit recovers to normal operation.

YES

There are some other possible external factors except failure. (External noise, thunder, etc.)

NO Check 4 ∗ Check if the power transistor is normal.

NO

YES Check if insulation resistance of the compressor is 100kΩ and above.

NO

Replace the compressor and compressor inverter PC board (A2P) at the same time.

YES Replace the inverter PC board (A2P). Check 4 ∗ Check if the power transistor of the fan driver is normal.

NO Replace the compressor inverter PC board (A2P) and fan inverter PC board (A5P).

YES

∗ Check 4 : Referring to the information on P339.

280

Replace the inverter PC board (A2P).

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.36 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display

L4

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Fin temperature is detected by the thermistor of the radiation fin.

Malfunction Decision Conditions

When the temperature of the inverter radiation fin increases above 93°C.

Supposed Causes

„ Actuation of fin thermal (Actuates above 93°C) „ Defect of inverter PC board „ Defect of fin thermistor

Troubleshooting Caution

Power OFF

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Fin temperature of the compressor inverter is high.

YES

NO Remove and insert the fin thermistor connector "X111A".

Power ON

Turn ON the power supply, YES and then check whether or not the malfunction recurs. NO

Troubleshooting

If the fin reaches a temperature of 93˚C, the malfunction will occur.

Faulty radiation from the switch box: Conduct the checks shown below. • Radiation fin for stains • Airflow for interference • Fan propeller for damage • Whether or not outdoor temperature is too high Replace the inverter PC board.

End of measures • It is supposed that radiation fin temperature has risen due to on-site causes. Conduct the checks shown below. • Radiation fin for stains • Airflow for interference • Fan propeller for damage • Whether or not outdoor temperature is too high

281

Troubleshooting by Indication on the Remote Controller

Si37-701

Inverter PC board for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

282

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.37 “L5” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display

L5

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected from current flowing in the power transistor.

Malfunction Decision Conditions

When an excessive current flows in the power transistor. (Instantaneous overcurrent also causes activation.)

Supposed Causes

„ Defect of compressor coil (disconnected, defective insulation) „ Compressor start-up malfunction (mechanical lock) „ Defect of inverter PC board

Troubleshooting

283

Troubleshooting by Indication on the Remote Controller

Troubleshooting

Si37-701

Compressor inspection Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check if the stop valve is open.

NO

Open the stop valve.

YES Check if the compressor lead wires are normal.

NO

Replace compressor lead wires.

YES

Check if the wiring and connection to the compressor are normal.

NO

Correct the wiring and connection.

YES Power OFF

Insulation resistance of the compressor is 100 kΩ or below.

YES

Replace inverter compressor.

NO Compressor coils are disconnected.

YES

Replace inverter compressor.

NO Check 4 ∗ Check if the power transistor is normal.

NO

Replace inverter PC board (A2P).

YES

NO

(

YES Power OFF and the Power ON again

Continue operation. Momentary power failure is possible.

(

Failure occurs again after restarting the unit.

Replace inverter PC board (A2P).

Failure occurs again after restarting the unit.

NO

Continue operation.

YES Replace inverter compressor.

∗ Check 4 : Referring to the information on P339.

284

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.38 “L8” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display

L8

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Malfunction is detected by current flowing in the power transistor.

Malfunction Decision Conditions

When overload in the compressor is detected. (Inverter secondary current 16.1A) (1) 33.5A and over continues for 5 seconds. (2) 27.6A and over continues for 260 seconds.

Supposed Causes

„ „ „ „

Troubleshooting

Compressor overload Compressor coil disconnected Defect of inverter PC board Faulty compressor

285

Troubleshooting by Indication on the Remote Controller

Troubleshooting

Si37-701

Output current check

Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check if the stop valve is open.

NO

Open the stop valve.

YES

Check if the compressor lead wires are normal.

Check if the wiring and connection to the compressor are normal.

NO

NO

Replace compressor lead wires.

Correct the wiring and connection.

Power OFF Insulation resistance of the compressor is 100 kΩ or below.

Compressor coils are disconnected.

Check 4 ∗ Check if the power transistor is normal.

YES

YES

NO

Replace the inverter compressor.

Replace the inverter compressor.

Replace the inverter PC board (A2P).

YES Connect the compressor lead wires then restart the operation.

Malfunction code “L8” is displayed again.

NO

Continue operation.

YES Check if the pressure difference between high pressure and low pressure before restarting is 0.2MPa or below. YES

NO

∗ Check 4 : Referring to the information on P339.

286

Defective pressure equalizing in the refrigerant circuit.

Inspection of the compressor.

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.39 “L9” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display

L9

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detect the failure based on the signal waveform of the compressor.

Malfunction Decision Conditions

Starting the compressor does not complete.

Supposed Causes

„ „ „ „ „

Troubleshooting

Failure to open the stop valve Defective compressor Wiring connection error to the compressor Large pressure difference before starting the compressor Defective inverter PC board

287

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check if it is the first time to start after installation.

NO

Go on to the next page. ( Starting failure due to aged operation.)

YES

Check if a right amount of refrigerant is charged.

NO

Charge a right amount of refrigerant.

YES

Check if the stop valve is open.

NO

Open the stop valve.

YES

Refrigerant is sleeping. ( The unit is out of power supply for more than 6 hours.)

YES

Cancel the sleeping state of refrigerant.

NO Check if the insulation resistance of the compressor is more than 100kΩ.

NO

Cancel the sleeping state of refrigerant.

YES

Check if the compressor lead wires are disconnected.

YES

Fix the compressor lead wire.

NO Correct the wiring then supply power to restart.

288

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Continued from the previous page. (Start failure due to aged operation.)

Refrigerant is sleeping. ( The unit is out of power supply for more than 6 hours.)

NO

Cancel the sleeping state of refrigerant.

YES

Check if the insulation resistance of the compressor is 100kΩ or over.

NO

Replace the inverter compressor.

YES

Broken inside the compressor

YES

Replace the inverter compressor.

NO Check 4 ∗ Check if the power transistor is normal.

NO

Replace the compressor inverter PC board (A2P).

YES Recheck the compressor/ refrigerant circuit.

∗ Check 4 : Referring to the information on P339.

Troubleshooting

289

Troubleshooting by Indication on the Remote Controller

Si37-701

3.40 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display

LC

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Check the communication state between inverter PC board and control PC board by microcomputer.

Malfunction Decision Conditions

When the correct communication is not conducted in certain period.

Supposed Causes

„ „ „ „ „ „ „ „

290

Malfunction of connection between the inverter PC board and outdoor control PC board Defect of outdoor control PC board (transmission section) Defect of inverter PC board Defect of noise filter Faulty fan inverter Incorrect type of fan inverter Faulty compressor Faulty fan motor

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Are the fan transmission wire connectors (X3A: Black, X4A: Yellow) wrongly connected?

NO

Connect the connectors to the corresponding color (black or yellow).

YES

Power ON

Check whether or not the power supply voltage between L2 and N falls in the range of 220 to 240VAC?

NO

On-site cause. Correct the wiring.

YES Is the type (PC No.) of the fan inverter correct?

NO

YES Disconnect the cable from the compressor, and then check the compressor for the insulation resistance. NO Power OFF

The insulation resistance is low (i.e., not more than 100kΩ.)

Mount the correct type of fan inverter. REYQ8P REYQ10P REYQ12P REYQ16P REYQ18P

YES

FAN1 PC0511-1 PC0511-1 PC0511-3 PC0511-3 PC0511-1

FAN2 PC0511-4 PC0511-4 PC0511-2

Replace the compressor.

NO Disconnect the cable from the fan, and then check the fan motor for the insulation resistance. NO The insulation resistance is low (i.e., not more than 1MΩ.)

YES

Replace the fan motor. Replace the fan driver PC board.

NO

Check for connector connections: Remove and insert the connectors shown below. [Fan 1] [Fan 2] • A1P X28A ⇔ X6A A5P • A6P X51A ⇔ X5A A7P • A1P X20A ⇔ X15A A2P • A6P X4A ⇔ X3A A7P • A5P X61A ⇔ X402A A4P • A7P X4A Short connector • A5P X1A ⇔ X403A A4P • A5P X5A ⇔ X5A A6P • A5P X41A ⇔ X3A A6P • A7P X4A Short connector Check for connector connections: Remove and insert the connectors shown below. [Fan 1] [Fan 2] • A1P X28A ⇔ X6A A5P • A3P X28A ⇔ X6A A8P • A1P X20A ⇔ X15A A2P • A3P X20A ⇔ X4A A8P • A5P X61A ⇔ X402A A4P • A8P X61A ⇔ X402A A7P • A5P X1A ⇔ X403A A4P • A8P X1A ⇔ X403A A7P • A5P X5A ⇔ X5A A6P • A8P X5A ⇔ X5A A9P • A5P X41A ⇔ X3A A6P • A8P X41A ⇔ X3A A9P • A7P X4A Short connector • A9P X4A Short connector

Check for connector connections: Remove and insert the connectors shown below. [Fan 1] [Fan 2] • A1P X28A ⇔ X6A A4P • A5P X51A ⇔ X5A A7P • A1P X20A ⇔ X15A A2P • A5P X4A ⇔ X3A A7P • A4P X61A ⇔ X402A A3P • A7P X4A Short connector • A4P X1A ⇔ X403A A3P Note) X3A: black • A4P X5A ⇔ X5A A5P X4A: yellow • A4P X41A ⇔ X3A A5P • A5P X4A Short connector

A

Troubleshooting

291

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting A

Power OFF

YES

F400U of the A3P has been molten.

Replace the noise filter of the A3P.

NO

Is the micro controller normal monitor (green) of the A1P blinking? YES Power ON

The A4P, A5P, and A7P do not blink.

NO

This is not LC. Recheck for the malfunction code.

Check 10 or more seconds after the power supply is turned ON. YES

NO

The A5P or A7P does not blink.

YES

A5P/A7P: Replace the fan driver PC board.

NO The LC malfunction recurs.

A4P: Replace the inverter PC board. ∗If the PC board replaced is badly damaged, the compressor is likely to get faulty. To make sure, recheck the compressor.

YES

Replace the control PC board.

NO End of measures: The malfunction may temporarily result from on-site causes. Causes: Instantaneous power failure (open phase), noises, or else. F400U

292

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.41 “P1” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display

P1

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Imbalance in supply voltage is detected in PC board. Imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter. Consequently, the increased ripple is detected.

Malfunction Decision Conditions

When the resistance value of thermistor becomes a value equivalent to open or short circuited status. ★ Malfunction is not decided while the unit operation is continued. "P1" will be displayed by pressing the inspection button. When the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes.

Supposed Causes

„ „ „ „ „ „

Open phase Voltage imbalance between phases Defect of main circuit capacitor Defect of inverter PC board Defect of K2 relay in inverter PC board Improper main circuit wiring

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Imbalance in supplied voltage is in excess of 14 V (Y1). ∗1

YES

Open phase? NO

NO

Is the voltage imbalance applied to the inverter in excess of 14 V (Y1)? ∗2

YES

NO Using a device capable of constant recording of power supply voltage record power supply voltage between 3 phases (L1 ~ L2, L2 ~ L3, L3~L1) for about one continuous week.

No abnormalities are observed in the power supply, but the imbalance in voltage recurs.

YES

Open phase Normalize field cause. Fix power supply voltage imbalance. Part or wiring defect After turning the power supply OFF, check and repair the main circuit wiring or parts. (1) Loose or disconnected wiring between power supply and inverter (2) K2 contact disposition, fusion or contact is poor. (3) Loose or disconnected noise filter

∗1. Measure voltage at the X1M power supply terminal block. ∗2. Measure voltage at terminals L1, L2 and L3 of the diode module inside the inverter while the compressor is running.

Power supply voltage imbalance measure Replace the inverter PC board.

Explanation for users ∗In accordance with "notification of inspection results" accompanying spare parts. Give the user a copy of "notification of inspection results"and leave Be sure to explain to the user that there is a "power supply imbalance" it up to him to improve the imbalance. for which DAIKIN is not responsible. (V2816)

Troubleshooting

293

Troubleshooting by Indication on the Remote Controller

Si37-701

3.42 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display

P4

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Resistance of radiation fin thermistor is detected when the compressor is not operating.

Malfunction Decision Conditions

When the resistance value of thermistor becomes a value equivalent to open or short circuited status. ★ Malfunction is not decided while the unit operation is continued. "P4" will be displayed by pressing the inspection button.

Supposed Causes

„ Defect of radiator fin temperature sensor „ Defect of inverter PC board

Troubleshooting Caution

Power OFF

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Disconnect the cable from the compressor, and then check the compressor for the insulation resistance. The insulation resistance is low (i.e., not more than 100kΩ.)

YES

Replace the compressor.

NO Disconnect the cable from the fan, and then check the fan motor for the insulation resistance. The insulation resistance is low (i.e., not more than 1MΩ.)

YES

Replace the fan motor Replace the fan driver PC board.

NO Remove and insert the fin thermistor connector [X111A].

Power ON

Turn ON the power supply, and then check whether or not the malfunction recurs.

YES

Replace the inverter PC board.

NO End

294

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Inverter PC board for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P405.

Troubleshooting

295

Troubleshooting by Indication on the Remote Controller

Si37-701

3.43 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board Remote Controller Display

PJ

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

The faulty (or no) field setting after replacing main PC board or faulty PC board combination is detected through communications with the inverter.

Malfunction Decision Conditions

Whether or not the field setting or the type of the PC board is correct through the communication date is judged.

Supposed Causes

„ Faulty (or no) field setting after replacing main PC board „ Mismatching of type of PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Has the PC board been replaced?

NO

YES When replacing the PC board, were field setting properly made?

NO

Correct the field settings.

YES

Is the type of PC board correct? ∗ YES

NO

Replace with a correct PC board.

Reset, and then restart. ∗Note) Type of PC board mismatching includes; Main PC board Inverter PC board (for compressor) Fan driver PC board

296

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.44 “UO” Outdoor Unit: Gas Shortage Alert Remote Controller Display

U0

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detect gas shortage based on the temperature difference between low pressure or suction pipe and heat exchanger.

Malfunction Decision Conditions

[In cooling mode] Low pressure becomes 0.1MPa or below. [In heating mode] The degree of superheat of suction gas becomes 20 degrees and over. SH= Ts1 –Te Ts1: Suction pipe temperature detected by thermistor Te : Saturated temperature corresponding to low pressure ★Malfunction is not determined. The unit continues operation.

Supposed Causes

„ „ „ „

Troubleshooting

Gas shortage or refrigerant clogging (piping error) Defective thermistor (R4T, R7T, R12T, R15T) Defective low pressure sensor Defective outdoor unit PC board (A1P)

297

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

In cooling mode
Set up a pressure gauge at the service port on the low pressure side.  Reset the operation using the remote controller then restart.

Check if the low pressure is 0.1MPa or below. (∗1)

NO

Check if the property of low pressure sensor is normal. (∗2)

YES

NO

Replace the low pressure sensor.

YES Replace the main PC board (A1P). Remove the factor of decreasing low pressure by referring to Check 6 . ∗1

∗1: Check the low pressure value by using pressure gauge in operation. ∗2: Compare the actual measurement value by pressure sensor with the value by the pressure gauge. (To gain actual measurement value by pressure sensor, measure the voltage at the connector [between (2)-(3)] and then convert the value into pressure referring to P407.) In heating mode Reset the operation using the remote controller then restart.

Check if the temperature difference between the suction pipe and the heat exchanger is 20 ˚C and over.

NO

Check if the property of suction pipe thermister (A7T) and heat exchanger thermister (R4T) are normal. (*3)

NO

Replace the thermister.

YES

∗3: Compare the thermister resistance value with the value on the surface thermometer.

∗1 Check 6 : Referring to the information on P341.

Replace the main PC board (A1P). Remove the factor of superheating by referring to Check 3 . ∗2

∗2 Check 3 : Referring to the information on P338.

298

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.45 “U1” Reverse Phase, Open Phase Remote Controller Display

U1

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged.

Malfunction Decision Conditions

When a significant phase difference is made between phases.

Supposed Causes

„ Power supply reverse phase „ Power supply open phase „ Defect of outdoor PC board (A1P)

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

There is an open phase at the power supply terminal section (X1M) of the outdoor unit.

YES

Fix the open phase. Requires inspection of field power supply section.

NO Operation is normal if one place of power supply line phase is replaced. NO

YES

Reverse phase Counter measure of the problem is completed by phase replacement. Replace outdoor unit PC board (A1P). (V2820)

Troubleshooting

299

Troubleshooting by Indication on the Remote Controller

Si37-701

3.46 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display

U2

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.

Malfunction Decision Conditions

When the voltage aforementioned is not less than 780V or not more than 320V, or when the current-limiting voltage does not reach 200V or more or exceeds 740V.

Supposed Causes

„ „ „ „ „ „ „ „ „

300

Power supply insufficient Instantaneous power failure Open phase Defect of inverter PC board Defect of outdoor control PC board Main circuit wiring defect Faulty compressor Faulty fan motor Faulty connection of signal cable

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check for power supply voltage. Voltage between phases: 380 to 415V Phase voltage: 220 to 240V

On-site causes. Make proper wire connections without open phase, erroneous connections, or erroneous order of phases.

YES

Power ON

Power OFF

NO

Unbalanced power supply? (Not more NO than 2%: Phase voltage of not more than approx. 5V) YES Disconnect the cable from the compressor, and then check the compressor for the insulation resistance. NO The YES insulation resistance is low (i.e., not more than 100kΩ.) NO Disconnect the cable from the fan, and then check the fan motor for the insulation resistance. NO The YES insulation resistance is low (i.e., not more than 1MΩ.) NO

On-site causes Correct the unbalanced loads to eliminate the unbalanced state. Unbalanced voltage will cause extremely unbalanced current, thus impairing the service life of or resulting in the malfunction of the equipment.

Replace the compressor.

Replace the fan motor. Replace the fan driver.

Check the inverter power transistor.

Has the power transistor got faulty?

YES

NO

Check the fan driver power transistor. Has the power transistor got faulty? NO

YES

Replace the inverter PC board. Observe the conditions of the PC board. In the case of a serious failure, a compressor failure may cause the failure of the PC board. Even if the PC board is replaced, it may cause failure again. To avoid that, recheck the compressor for ground and for any broken wires. Furthermore, even after the completion of PC board replacement, check the compressor. Replace the fan driver PC board. Observe the conditions of the PC board.

A

Troubleshooting

301

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting A

Power OFF

Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity. • X1M power receiving terminal ⇔ X400A A3P • A3P X401A ⇔ X10A A4P • A1P X28A ⇔ X6A A4P • A4P X61A ⇔ X402A A3P • A4P X1A ⇔ X403A A3P • A4P P1,P2 ⇔ Reactor terminal L1R • A4P P3,N3 ⇔ P1,N1 A5P • A5P P2,N2 ⇔ P1,N1 A7P

Has the inverter PC board caused damage?

YES Single : A5P, A8P Multi : A4P Replace the inverter PC board. ∗If the PC board replaced is badly damaged, the compressor is likely to get faulty. To make sure, recheck the compressor.

NO

Has the fan driver caused damage?

Check for connector connections: Remove and insert the connectors shown below. Furthermore, check the connectors for terminal conditions and continuity. • X1M power receiving terminal ⇔ X400A A3P • A4P or A7P X401A ⇔ X10A A5P or A8P • A1P or A3P X28A ⇔ X6A A5P or A8P • A5P or A8P X61A ⇔ X402A A4P or A7P • A5P or A8P X1A ⇔ X403A A4P or A7P • A5P or A8P P1,P2 ⇔ Reactor terminal L1R • A5P or A8P P3,N3 ⇔ P1,N1 A5P • A6P P2,N2 ⇔ P1,N1 A7P

YES

NO

Single : A6P, A7P or A9P Multi : A5P/A7P Replace the fan driver PC board. ∗If the PC board replaced is badly damaged, the fan motor is likely to get faulty. To make sure, recheck the compressor.

Turn ON the power supply. Stop (standby) before the fan rotates.

YES

NO

Power ON

Stop (standby) when the compressor starts up.

YES

NO

The U2 malfunction recurs.

YES

Recheck for the power supply. If there is no problem with the power supply, replace the A4P, A7P or A3P noise filter PC board. If the malfunction recurs, replace the inverter PC board. Recheck for the power supply. If there is no problem with the power supply, replace the A5P, A8P or A4P inverter PC board. ∗If the PC board replaced is badly damaged, compressor is likely to get faulty. To make sure, recheck the compressor. Check the harness, and then replace it if necessary.

NO End of measures: The malfunction may temporarily result from on-site causes. Causes: Instantaneous power failure (open phase), noises, or else.

302

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.47 “U3” Outdoor Unit: Check Operation not Executed Remote Controller Display

U3

Applicable Models

REYQ8P~48P

Method of Malfunction Detection

Check operation is executed or not

Malfunction Decision Conditions

Malfunction is decided when the unit starts operation without check operation.

Supposed Causes

„ Check operation is not executed.

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Has the check operation performed on Outdoor unit PC board? YES

NO

Press and hold BS4 on the outdoor master PCB for 5 seconds or more, or turn ON the local setting mode 2-3 to conduct a check operation. Performs the chech operation again and completes the check operation. When a leakage detection function is needed, normal operation of charging refrigerant must be completed. And then, start once again and complete a check operation. (V3052)

Troubleshooting

303

Troubleshooting by Indication on the Remote Controller

Si37-701

3.48 “U4” Malfunction of Transmission between Indoor Units Remote Controller Display

U4

Applicable Models

All model of indoor unit REYQ8P~48P

Method of Malfunction Detection

Check if the transmission between indoor unit and outdoor unit is correctly executed using microcomputer.

Malfunction Decision Conditions

When transmission is not carried out normally for a certain amount of time

Supposed Causes

„ Indoor to outdoor, outdoor to outdoor transmission wiring F1, F2 disconnection, short circuit „ „ „ „

304

or wrong wiring Outdoor unit power supply is OFF System address doesn’t match Defect of indoor unit PC board Defect of outdoor unit PC board

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the detailed malfunction status in the monitor mode. (Refer to P226~227 for how to check.)

In Check 4, LED lamp indicates as follows:

Go on to the next page. LED lamp display

NO

(

)

YES Check if indoor unit PC board or outdoor unit PC board has been replaced. Or check if indoor/ outdoor, outdoor/ outdoor connecting wires are normal.

YES

Press the rewiring button on the main PC board of the master outdoor unit. Keep pressing for 5 seconds or more. (Operation does not start for a maximum 12 minutes.)

NO Check if all the indoor remote controllers within the same refrigerant circuit display “U4”.

NO

YES

Check if the indoor/ outdoor, outdoor/ outdoor connecting wires are normal.

YES

NO

Replace indoor unit PC board.

Correct the connecting wires.

Reset the power supply here. Check if the normal condition monitor for the microcomputer (HAP) on the outdoor unit PC board blinks.

NO

Lights do not go out for 12 minutes or more.

NO

The fuse on the outdoor unit PC board is blown. NO

YES

Replace the fuse.

Replace the outdoor unit PC board.

YES Press the rewiring button on the main PC board of the outdoor unit. Keep pressing for 5 seconds or more.

NO Check if the indoor/ outdoor, outdoor/ outdoor connecting wires are normal.

Correct the voltage (200V).

YES

YES Check if the LED in preparation mode (H2P) on the outdoor unit PC board blink. YES

Check if the NO voltage between RS terminals on the outdoor unit PC board is 200V.

NO

Correct the connecting wires.

YES Check if the operation is normal with 1 circuit after outdoor/ outdoor connecting wires are removed. YES

Troubleshooting

NO

Replace the main PC board of outdoor unit. Fix DIII Net extension adapter.

305

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Continued from the previous page In Check 4, LED lamp indicates as follows:

(

)

Start operation of all the indoor units.

Check if all the units indicate “U9”.

NO

Continue operation.

YES

Check if more than 2 minutes passed since “U9”was indicated.

NO

Make a diagnosis again based on the indication in 2 minutes and over.

YES The indoor units PC board indicating “U9” are normal. Check the indoor units in the other circuits to diagnose failure according to the corresponding malfunction codes.

306

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.49 “U5” Indoor Unit: Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display

U5

Applicable Models

All models of indoor units

Method of Malfunction Detection

In case of controlling with 2-remote controller, check the system using microcomputer is signal transmission between indoor unit and remote controller (main and sub) is normal.

Malfunction Decision Conditions

Normal transmission does not continue for specified period.

Supposed Causes

„ „ „ „ „

Malfunction of indoor unit remote controller transmission Connection of two main remote controllers (when using 2 remote controllers) Defect of indoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Using 2-remote controllers control.

YES

NO

All indoor PC board microcomputer monitors blink.

YES

Set one remote controller to "SUB"; turn the power supply off once and then back on.

NO

NO

YES

Operation returns to normal when the power is turned off momentarily. YES

Replace the remote controller

Normal

SS1 of both remote controllers is set to "MAIN."

YES

NO

Replace indoor unit PC board. There is possibility of malfunction caused by noise. Check the surrounding area and turn on again. Normal

NO Replace the indoor unit PC board. Normal NO

YES

Normal There is possibility of malfunction caused by noise. Check the surrounding area and turn on again. (V2823)

Troubleshooting

307

Troubleshooting by Indication on the Remote Controller

Si37-701

3.50 “U7” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display

U7

Applicable Models

All models of outdoor units

Method of Malfunction Detection

Microcomputer checks if transmission between outdoor units.

Malfunction Decision Conditions

When transmission is not carried out normally for a certain amount of time

Supposed Causes

„ Connection error in connecting wires between outdoor unit and outdoor unit outside control

adapter „ Connection error in connecting wires across outdoor units „ Setting error in switching cooling/ heating „ Integrated address setting error for cooling/ heating

(function unit, outdoor unit outside control adapter) „ Defective outdoor unit PC board (A1P or A3P) „ Defective outdoor unit outside control adapter

308

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the LED lamps for “Check 3” corresponding to the malfunction code “U7” and for Check 4 in the monitor mode. (Refer to P226~227 for how to check)

Check 3

Check 4 Go on to the Diagnosis Flow 1

Check 3

Check 4 Go on to the Diagnosis Flow 2

Check 3

Check 4 Go on to the Diagnosis Flow 3

Check 3

Check 4 Go on to the Diagnosis Flow 4

Check 3

Check 4 Go on to the Diagnosis Flow 5

Check 3

Check 4 Go on to the Diagnosis Flow 6

Check 3

Check 4 Go on to the Diagnosis Flow 7

Check 3

Check 4 Go on to the Diagnosis Flow 8

Troubleshooting

309

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 1 Check 4

Check if any disconnection or connection error is detected in connecting wires with outside control adapter.

NO

Correct the connecting wiring with the outside control adapter.

YES Check if the normal condition monitor LED for the outdoor unit PC board blinks.

NO

YES

Check if power is supplied to the outdoor units.

NO Supply power to the outdoor unit.

YES Replace the outdoor unit main PC board.

Check if the normal condition monitor LED for the outside control adapter blinks. YES

NO

Check if the power supply wire for the outside control adapter is connected to 5V supply line.

NO

Connect the power supply wire for the outside control adapter to 5V supply line.

YES Replace the PC board of the outside control adapter. Replace the outdoor unit main PC board.

310

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 2 Check 4

Switch cooling/heating in a lump.

NO

Set the cooling/heating switch of the outside control adapter to “individual”.

YES Setting of cooling/heating switch for the outside control adapter is “Master in a lump”.

YES

The integrated addresses for cooling/heating within the outdoor/outdoor transmission are duplicated. Set the address again.

NO Setting of cooling/heating switch for the outside control adapter is “Slave in a lump”.

NO

Replace the main PC board of the outdoor unit.

YES Check if the normal condition NO monitor LED for the outdoor unit main PC board blinks. YES

Check if the NO outdoor unit is powered on.

Supply power to the outdoor unit.

YES Replace the main PC board of the outdoor unit.

Check if the normal condition NO monitor LED for the outside control adapter blinks. YES Set the cooling/heating switch of the outside control adapter to “individual”. Then check if the failure occurs again.

Check if the power supply wire for the outside control adapter is connected to 5V supply line.

NO

Connect the power supply wire for the outside control adapter to 5V supply line.

YES

NO

Replace the PC board of the outside control adapter.

YES Replace the main PC board of the outdoor unit.

Troubleshooting

311

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 3 Check 4

Check the connection status of connecting wires of Multi Slave 1 with outdoor multi. Check if the wiring is not disconnected or is about to be disconnected.

NO

Replace the outdoor unit main PC board of the Multi Slave 1.

YES Correct the connecting wires of the outdoor multi and then reset the power supply. Check 3

Diagnosis Flow 4 Check 4

Check the connection status of connecting wires of Multi Slave 2 with outdoor multi. Check if the wiring is not disconnected or is about to be disconnected.

NO

Replace the outdoor unit main PC board of the Multi Slave 2.

YES Correct the connecting wires of the outdoor multi and then reset the power supply. Check 3

Diagnosis Flow 5 Check 4

Check if the outdoor unit is REYQ8~16PY1.

NO

Replace the main PC board of the outdoor unit.

YES Remove the connecting wires of the outdoor multi and then reset the power supply.

312

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 6 Check 4

Check the connection status of one of the connecting wires of Outdoor Multi. Check if the wiring is broken or disconnected.

NO

Replace the main PC board of the outdoor unit.

YES Correct the connecting wires of the outdoor multi and then reset the power supply. Check 3

Diagnosis Flow 7 Check 4

In the connection status of theoutdoor multi, check if more than 4 outdoor units are connected.

NO

Replace the main PC board of the outdoor unit.

YES Correct the connecting wires of the outdoor multi and then reset the power supply. Check 3

Diagnosis Flow 8 Check 4

Check the connection status of the connecting wires of outdoor multi. Check if the wiring has any connection error or broken, or is about to be disconnected.

NO

Replace the main PC board of the outdoor unit.

YES Correct the connecting wires of the outdoor multi and then reset the power supply.

Troubleshooting

313

Troubleshooting by Indication on the Remote Controller

Si37-701

3.51 “U8” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display

U8

Applicable Models

All models of indoor units

Method of Malfunction Detection

In case of controlling with 2-remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal.

Malfunction Decision Conditions

Normal transmission does not continue for specified period.

Supposed Causes

„ Malfunction of transmission between main and sub remote controller „ Connection between sub remote controllers „ Defect of remote controller PC board

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Using 2-remote controllers control.

NO

YES SS1 of both remote controllers is set to "SUB." YES

SS1 of remote controller PC boards is set to "MAIN."

NO

Set SS1 to "MAIN"; the power supply off once and then back on.

YES NO

Turn the power off and then back on. If a malfunction occurs, replace the remote controller PC board. Set one remote controller to "MAIN"; the power supply off once and then back on. (V2825)

314

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.52 “U9” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display

U9

Applicable Models

All models of indoor units REYQ8P~48P

Method of Malfunction Detection

Detect malfunction signal for the other indoor units within the circuit by outdoor unit PC board.

Malfunction Decision Conditions

When the malfunction decision is made on any other indoor unit within the system concerned.

Supposed Causes

„ „ „ „

Malfunction of transmission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit in other system Improper connection of transmission wiring between indoor and outdoor unit

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Turn on all indoor units.

All the units are indicating “U9”.

NO

Continue operation.

YES "U9" has been displayed for 2 minutes or more. YES

Troubleshooting

NO

Re-diagnose by display after passage of 2 minutes or more. The outdoor unit PC board indicated by the malfunction code U9 is normal. Check for the indoor unit of other system, and then conduct troubleshooting by diagnosis according to the Malfunction Code Flowchart.

315

Troubleshooting by Indication on the Remote Controller

Si37-701

3.53 “UA” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display

UA

Applicable Models

All models of indoor unit REYQ8P~48P

Method of Malfunction Detection

A difference occurs in data by the type of refrigerant between indoor and outdoor units. The number of indoor units is out of the allowable range.

Malfunction Decision Conditions

The malfunction decision is made as soon as either of the abnormalities aforementioned is detected.

Supposed Causes

„ „ „ „

Excess of connected indoor units Defect of outdoor unit PC board (A1P) Mismatching of the refrigerant type of indoor and outdoor unit. Setting of outdoor PC board was not conducted after replacing to spare parts PC board.

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the LED lamps for “Check 3” corresponding to the malfunction code “UA” and for Check 4 in the monitor mode. (Refer to P226~227 for how to check.)

Check 3

Check 4 Go on to the Diagnosis Flow 1

Check 3

Check 4 Go on to the Diagnosis Flow 2

Check 3

Check 4 Go on to the Diagnosis Flow 3

Check 3

Check 4 Go on to the Diagnosis Flow 4

316

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 1 Check 4

The number of indoor units connected to the same refrigerant circurt system should not be more than 64 units.

YES

Replace the main PC board of the outdoor unit.

NO The number of indoor units exceeds the standard. Check the connection to correct. Check 3

Diagnosis Flow 2 Check 4

Check if the refrigerant type of the outdoor unit corresponds to that of the indoor unit.

YES

Replace the main PC board of the outdoor unit.

NO Match the refrigerant types of the outdoor unit and the indoor unit.

Troubleshooting

317

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting Caution

Check 3

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Diagnosis Flow 3 Check 4

Check if the unit is connected to multi.

NO

Replace the main PC board of the outdoor unit.

YES Check if the outdoor unit PC board is replaced with PC board for spare parts.

NO

YES

Check if the unit is not connected to outdoor units of different models.

NO

Replace the main PC board of the outdoor unit.

YES Check the model of the outdoor unit.

Check if the spare parts PC board setting is correct.

NO

Correct the setting to reset the power.

YES Replace the spare parts PC board.

Check 3

Diagnosis Flow 4 Check 4

Replace the main PC board of the outdoor unit.

318

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.54 “UC” Address Duplication of Centralized Controller Remote Controller Display

UC

Applicable Models

All models of indoor unit Centralized controller

Method of Malfunction Detection

The principal indoor unit detects the same address as that of its own on any other indoor unit.

Malfunction Decision Conditions

The malfunction decision is made as soon as the abnormality aforementioned is detected.

Supposed Causes

„ Address duplication of centralized controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

The centralized address is duplicated.

Troubleshooting

Make setting change so that the centralized address will not be duplicated.

319

Troubleshooting by Indication on the Remote Controller

Si37-701

3.55 “UE” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display

UE

Applicable Models

All models of indoor units Centralized controller Schedule timer

Method of Malfunction Detection

Microcomputer checks if transmission between indoor unit and centralized controller is normal.

Malfunction Decision Conditions

When transmission is not carried out normally for a certain amount of time

Supposed Causes

„ Malfunction of transmission between optional controllers for centralized control and indoor

320

Intelligent Touch Controller

unit „ Connector for setting master controller is disconnected. (or disconnection of connector for independent / combined use changeover switch.) „ Failure of PC board for central remote controller „ Defect of indoor unit PC board

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Check the indoor unit for which “UE” is displayed. Is the the transmission malfunction (UE) caused on all indoor units?

YES

Continued to A (on the following page)

NO Is the power supply of the indoor unit, on which the “UE” occurred, turned ON?

NO

Make sure there are no hazardous situations, and then turn ON the power supply.

YES Has the setting of central control group No. been made with the indoor unit on which the “UE” occurred?

NO

YES

YES

Make correct setting of the central control group No.

NO For VRV systems, can the setting of central controlgroup No. be made in one and the same refrigerant system?

YES Was the central control group No. for indoor unit changed?

Can the setting of central control group No be made?

NO

YES

NO

Check outdoor units to which the refrigerant system is connected. Check whether or not there are no problems with the transmission wiring length, types of cables and wires, number of units connected, and others. If no problems, replace the indoor unit PC board. Reset the power supplies of every central equipment. For the intelligent Touch controller, register the air conditioner again while in DIII-NET test run menu. (V2822)

Troubleshooting

321

Troubleshooting by Indication on the Remote Controller

Si37-701

Troubleshooting A

Check the transmission wiring between central equipment for any broken wire. For details, refer to information in the “Procedure for checking broken wires” section. (Refer P.332)

Abnormal

Correct the wiring.

Normal Check the transmission wiring with the master unit central equipment for any broken wire. For details, refer to information in the “Procedure for checking broken wires” section. (Refer P.332)

Abnormal

Correct the wiring.

Normal Has the master unit central setting connector been connected?

NO

Correct the connection of the connector.

YES Disconnect the transmission wiring of the master unit central equipment, and then check the voltage between the transmission terminals (F1 and F2) of the master unit transmission equipment using a multiple meter.

Is the voltage between the terminals F1 (+) and F2 (-) in the range of 15.2 to 17.6 VDC? YES

NO

Replace the central equipment. Central equipment: Normal

It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

322

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

3.56 “UF” System is not Set yet Remote Controller Display

UF

Applicable Models

All models of indoor units REYQ8P~48P

Method of Malfunction Detection

On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.

Malfunction Decision Conditions

The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation.

Supposed Causes

„ Improper connection of transmission wiring between indoor-outdoor units and outdoor-

outdoor units „ Failure to execute check operation „ Defect of indoor unit PC board „ Stop valve is left in closed

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Are the stop valves openned?

NO

Open stop valve.

YES Is the check operation carried out?

NO

YES Is indoor - outdoor and outdoor - outdoor unit transmission wiring normal? YES

Is indoor -outdoor and outdooroutdoor unit transmission wiring normal?

YES Replace indoor unit PC board.

NO NO

After fixing incorrect wiring, push and hold the RESET button on the master outdoor unit PC board for 5 seconds. ∗ The unit will not run for up to 12 minutes. Wiring check operation may not have been carried out successfully. (V2830)

Note:

Troubleshooting

Wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours, or if it is not carried out after running all connected indoor units in the fan mode for at least an hour.

323

Troubleshooting by Indication on the Remote Controller

Si37-701

3.57 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display

UH

Applicable Models

All models of indoor units REYQ8P~48P

Method of Malfunction Detection

Detect an indoor unit with no address setting.

Malfunction Decision Conditions

The malfunction decision is made as soon as the abnormality aforementioned is detected.

Supposed Causes

„ Improper connection of transmission wiring between indoor-outdoor units and outdoor-

outdoor units „ Defect of indoor unit PC board „ Defect of outdoor unit main PC board (A1P or A3P)

324

Troubleshooting

Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Is electricity being introduce for the first time after YES installation or after an indoor or outdoor unit PC board has been replaced? NO

Is indoor - outdoor and outdoor - outdoor unit transmission wiring normal?

NO

Normal

YES

NO

YES Push and hold the RESET button on the outdoor unit PC board for 5 seconds

Does a malfunction occur?

Does a malfunction occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor units?

NO

After fixing incorrect wiring, push and hold the RESET button on the master outdoor unit PC board for 5 seconds. ∗ The unit will not run for up to 12 minutes.

Normal

YES

Disconnect the outdoor-outdoor unit transmission wiring to create the onesystem status, and then check whether or not the system is normal.

YES

Mount the DIII NET extension adapter.

NO Does a “UH” malfunction occur for all indoor units in the system? YES

NO

Replace indoor unit PC board.

Replace outdoor unit PC board (A1P or A3P).

(V2831)

∗1: Check the correct wiring “indoor-outdoor” and “outdoor-outdoor” by Installation Instruction. ∗2: What is Auto Address? This is the address automatically assigned to indoor units and outdoor units after initial power supply upon installation, or after executing rewiring (Keep pressing the rewiring button for more than 4 seconds).

Troubleshooting

325

Troubleshooting (OP: Central Remote Controller)

Si37-701

4. Troubleshooting (OP: Central Remote Controller) 4.1

“M1” PC Board Defect

Remote Controller Display

M1

Applicable Models

Central remote controller Schedule timer

Method of Malfunction Detection

Detect an abnormality in the DIII-NET polarity circuit.

Malfunction Decision Conditions

When + polarity and - polarity are detected at the same time.

Supposed Causes

„ Defect of central remote controller PC board „ Defect of Intelligent Touch Controller PC board „ Defect of Schedule timer PC board

Troubleshooting

Replace the central remote controller. Caution

Intelligent Touch Controller

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Turn ON the power supply of the central equipment with M1 displayed once again.

Is the M1 displayed again?

With M1 displayed

Without M1 displayed

Replace the central equipment. Central equipment: Normal

It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

326

Troubleshooting

Si37-701

4.2

Troubleshooting (OP: Central Remote Controller)

“M8” Malfunction of Transmission between Optional Controllers for Centralized Control

Remote Controller Display

M8

Applicable Models

Central remote controller Schedule timer

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.)

Malfunction Decision Conditions

When no master controller is present at the time of the startup of slave controller. When the centralized controller, which was connected once, shows no response.

Supposed Causes

„ Malfunction of transmission between optional controllers for centralized control „ Defect of PC board of optional controllers for centralized control

Intelligent Touch Controller

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Were any changes made to the number of units of central equipment? (The central equipment was connected once, and then disconnected, or additional central equipment was installed.)

YES

Reset the power supplies of every central equipment.

NO

Turn ON the power supply of the central equipment.

NO Have power supplies to every central equipment been turned ON? YES Is the display of LCD OK?

Nothing is displayed on the LCD by operating Ve-Up controller. (∗1) NO

NO

YES

Has the Reset switch (located inside of equipment) SS1 been set to the Normal side? YES Check 7 ∗2 Check if the unit indicating “A8” has no broken of wiring. Normal

Abnormal

YES

Replace Ve-Up controller.

Set the Reset switch (located NO inside of equipment) SS1 been set to the Normal side. Replace the central equipment. Correct the wiring.

Some central equipment gets faulty. Conduct RUN/STOP operations on every central equipment, and then replace the central equipment that cannot control the indoor unit.

∗1: Display screen control using Ve-Up controller: When the screen displays nothing by touching the screen, adjust the contrast volume. ∗2 Check 7 : Referring to the information on P342.

Troubleshooting

327

Troubleshooting (OP: Central Remote Controller)

4.3

Si37-701

“MA” Improper Combination of Optional Controllers for Centralized Control

Remote Controller Display

MA

Applicable Models

Central remote controller Schedule timer

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data.

Malfunction Decision Conditions

When the schedule timer is set to individual use mode, other central component is present. When multiple master controller are present. When the remote control adapter is present.

Supposed Causes

„ Improper combination of optional controllers for centralized control „ More than one master controller is connected „ Defect of PC board of optional controller for centralized control

328

Intelligent touch controller

Troubleshooting

Si37-701

Troubleshooting (OP: Central Remote Controller)

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Has the remote control adapter (KRP2A series) been connected?

Not available for combined use with the remote control adapter. Dismount the remote control adapter, and then reset power supplies of every central equipment.

YES

NO Has the schedule timer been connected?

YES

Has the Interface for BaCnet been connected?

NO

YES

NO Has the DMF-IF been connected?

YES

NO Has the parallel interface been connected?

YES

NO

NO

Are there two or more units of central equipment with master unit setting connectors (CN1/X1A) connected?

YES

Has the Independent/ YES Combined use connector(CN1/X1A) of the schedule timer been connected?

The List of Setting of Master Unit Central Setting Connector Check 8 ∗1

NO Reset the power supplies of every central equipment.

The MA malfunction code is displayed again.

The "MA" error code has been cleared. It is supposed that the malfunction results from Central equipment: Normal external factors (e.g. noises) from other equipment.

Not available for combined use of the schedule timer and the Interface for BaCnet. Dismount either of them, and then reset power supplies of every central equipment. Not available for combined use of the schedule timer and the DMS-IF. Dismount either of them, and then reset power supplies of every central equipment. Not available for combined use of the schedule timer and the parallel interface. Dismount either of them, and then reset power supplies of every central equipment. Dismount the Independent/ Combined use connector (CN1/X1A) of the schedule timer, and then reset power supplies of every central equipment.

Integrate every central equipment to which the master unit central connector is connected, and then reset power supplies of every central equipment. Disconnect the master unit central setting connector and connect this connector to different central equipment, and then reset power supplies of every central equipment. Central equipment, to which the master unit central setting connector is connected at the time when the malfunction code is cleared, is faulty. Replace this equipment.

∗1 Check 8 : Referring to the information on P343.

Troubleshooting

329

Troubleshooting (OP: Central Remote Controller)

4.4

Si37-701

“MC” Address Duplication, Improper Setting

Remote Controller Display

MC

Applicable Models

Central remote controller Schedule timer

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data.

Malfunction Decision Conditions

„ Two or more units of central remote controllers and Intelligent Touch Controllers are

Supposed Causes

„ Address duplication of centralized controller

Intelligent Touch Controller

connected, and all of them are set to master unit central setting or slave unit central setting. „ Two units of schedule timers are connected.

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Did the malfunction occur while in the first test run using the intelligent Touch controller?

NO

YES

Is the Master/Slave setting of the central equipment correct? NO

Is the Master/ Slave setting of the central equipment correct?

Be sure to refer to the Master/ Slave setting table. Check 9 Correct the setting of the combination of master and ∗1 slave units, and then reset the power supplies of every central equipment.

YES

YES

NO

Was the central equipment connected once, and then disconnected, or was additional central equipment installed?

YES Reset the power supplies of every central equipment.

NO Turn ON the power supply of the central equipment with "MC" displayed once again. If the intelligent Touch controller is used, correct the setting of the combination of master and slave units again while in DIII-NET test run mode, referring to the Master/Slave setting table. (Refer P183.)

With "MC" displayed Is the "MC" displayed again?

Replace the central equipment.

Without "MC" displayed Reset the power supplies of every central equipment.

Central equipment: Normal

It is supposed that the malfunction results from external factors (e.g. noises) from other equipment.

∗1 Check 9 : Referring to the information on P344.

330

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

5. Troubleshooting (OP: Unified ON/OFF Controller) 5.1

Operation Lamp Blinks

Remote Controller Display

Operation lamp blinks

Applicable Models

All model of indoor units Unified ON/OFF controller

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data.

Malfunction Decision Conditions Supposed Causes

Troubleshooting

„ „ „ „ „

Malfunction of transmission between optional central controller and indoor unit Connector for setting master controller is disconnected Defect of unified ON/OFF controller PC board Defect of indoor unit PC board Malfunction of air conditioner

331

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Is a malfunction code displayed on the remote controller?

YES

Diagnose the cause with the air conditioner's failure diagnosis manual.

NO Has a once connected indoor unit been removed or its address changed?

YES

Reset power supply for all optional controllers for centralized control simultaneously.

NO Is the power supply for the indoor unit displaying a malfunction turned on? YES Is transmission wiring disconnected or wired incorrectly? NO Is transmission with all indoor units malfunctioning?

NO

YES

YES

NO Is the transmission wiring with the master controller disconnected or wired incorrectly?

Turn the power supply of the indoor unit on.

Fix the wiring correctly.

Is the group No. of malfunctioning indoor units set? YES

NO

Set the group No. correctly.

Replace the central PC board. YES Fix the wiring correctly.

NO Is the master controller's connector for setting master controller disconnected.

YES

Connect the connector correctly.

NO Replace the central PC board. (V2841)

332

Troubleshooting

Si37-701

5.2

Troubleshooting (OP: Unified ON/OFF Controller)

Display “Under Centralized Control” Blinks (Repeats Single Blink) “under centralized control” (Repeats single blink)

Remote Controller Display Applicable Models

Unified ON/OFF controller Central remote controller, Schedule timer

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data.

Malfunction Decision Conditions

When the centralized controller, which was connected once, shows no response. The control ranges are overlapped. When multiple master central controller are present. When the schedule timer is set to individual use mode, other central controller is present. When the wiring adaptor for electrical appendices is present.

Supposed Causes

„ „ „ „ „

Troubleshooting

Address duplication of optional controllers for centralized control Improper combination of optional controllers for centralized control Connection of more than one master controller Malfunction of transmission between optional controllers for centralized control Defect of PC board of optional controllers for centralized control

333

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Caution

Has a once connected optional controller for centralized control been disconnected or its address changed?

YES

Reset power supply simultaneously for all optional controllers for centralized control.

NO Is the power supply turned on for all optional controllers for centralized control? YES Is the reset switch of all optional controllers for centralized control set to "normal"?

NO

Turn on power supply for all optional controllers for centralized control.

NO

Set reset switch to "normal."

YES Is transmission wiring disconnected or wired incorrectly?

YES

NO Is a central remote controller or schedule timer connected?

YES

NO

Are two or more unified ON / OFF controllers connected? NO

Fix the wiring correctly.

Is the central remote controller or schedule timer displaying a malfunction?

334

Refer to failure diagnosis for central remote controller or schedule timer.

NO

YES

Is the setting of the unified ON / OFF controller's switch for setting each address duplicated? YES

2A

YES

NO

Correct the setting of the unified ON / OFF controller's switch for setting each address and reset the power supply of the unified ON / OFF controller.

(V2842)

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

2A Is the wiring adaptor for electrical appendices connected?

YES

Cannot be used in combination with a wiring adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.

NO

Is a schedule timer connected?

YES

NO

Is a parallel interface connected?

YES

NO

Is the schedule timer's individual/combined connector connected? NO

Are there two or more optional controllers for centralized control connected with the connector for setting master controller?

YES

NO Reset the power supply for all optional controllers for centralized control simultaneously. If the malfunction is still not cleared:

YES

Schedule timer and parallel interface cannot be used in combination. Disconnect either the schedule timer or parallel interface and reset the power supply for all optional controllers for centralized control simultaneously. Disconnect the schedule timer's individual / combined connector and reset the power supply for all optional controllers for centralized control simultaneously.

Arrange so that the connector for setting master controller is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously.

Disconnect the connector for setting master controller from the master controller, connect to another optional controller for centralized control and simultaneously reset all optional controllers for centralized control again. The controller connected by the connector for setting master controller when the malfunction is cleared is defective and must be replaced.

(V2843)

Troubleshooting

335

Troubleshooting (OP: Unified ON/OFF Controller)

5.3

Si37-701

Display “Under Centralized Control” Blinks (Repeats Double Blink)

Remote Controller Display

“under centralized control” (Repeats double blink)

Applicable Models

Unified ON/OFF controller

Method of Malfunction Detection

Detect the malfunction according to DIII-NET transmission data.

Malfunction Decision Conditions

When no central control addresses are set to indoor units. When no indoor units are connected within the control range.

Supposed Causes

„ Central control address (group No.) is not set for indoor unit. „ Improper control range setting switch „ Improper wiring of transmission wiring

Troubleshooting Caution

Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

Is the central control address (group No.) NO set for the indoor unit? YES Is the control range setting switch set correctly?

NO

YES Is the transmission wiring disconnected or wired incorrectly?

YES

Set by remote controller the central control address for all indoor units connected to the central control line.

Set the control range setting switch correctly and simultaneously reset the power supply for all optional controllers

Fix the wiring correctly.

NO Replace the unified ON/OFF controller. (V2844)

336

Troubleshooting

Si37-701

[CHECK 1]

[CHECK 2]

Troubleshooting

Troubleshooting (OP: Unified ON/OFF Controller)

Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.

Red

U

White

V

Black

W

Measure the resistance values between phases U,V,W.

(1) Turn off the power supply. (2) Measure the resistance between Vcc and each phase of U,V,W, and GND and each phase at the motor side connectors (five-core wire) to check that the values are balanced within the range of ± 20 %, while connector or relay connector is disconnected. Furthermore, to use a multiple meter for measurement, connect the probe of negative pole to Vcc and that of positive pole to GND.

5 Gray

GND

4 Pink

Vcc

3 Orange

W

2 Blue

V

1 Yellow

U

Measure the resistance values between Vcc and U,V,W, and GND and U,V,W.

337

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[CHECK 3] Check the Factors of Overheat Operation Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot gas bypass control (∗1)

Defective solenoid valve coil Defective solenoid valve body

←Check if coil resistance and insulation are normal.

Defective control PC board

Faulty discharge pipe temperature control

[In cooling mode only]

Faulty subcooling motorized valve control (EV2)

Subcooling motor operated valve failure Control failure

(∗2) Temperature increase of discharge pipe

[In cooling mode] When indoor unit electronic expansion valve becomes too narrow (∗3)

4 way switch valve is in the middle position. Leak from hot gas bypass valve

←Check if the voltage property is normal. ←Check if the connector is connected properly. Check if the thermister resistance property is normal. ←Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor.

←Check if the piping temperature connected to the 4 way switch valve is normal.

Superheat due to defective compressor Indoor unit motorized valve failure

Faulty control

Defective valve coil

Faulty control

←Check if coil resistance and insulation are normal.

Defective valve body Defective thermister for indoor unit gas pipe

←Check if the connector is connected properly. Check if the thermister resistance property is normal.

Defective thermister for indoor unit liquid pipe

←Check if the connector is connected properly. Check if the thermister resistance property is normal.

Defective control PC board Outdoor unit motorized valve failure

Defective valve coil

←Check if coil resistance and insulation are normal.

Defective valve body Defective low pressure sensor Defective thermister for suction pipe Defective control PC board

Refrigerant gas shortage

Large resistance of piping

insulation are normal.

Superheat due to shaft damage

Faulty superheated degree control.

[In heading mode]When outdoor unit electronic expansion valve becomes too narrow (∗4)

Defective valve body Defective low pressure sensor Defective subcool heat exchange outlet thermister Defective control PC board

Faulty of 4 way switch valve operation

Compressor overheat

Defective valve coil ←Check if coil resistance and

←Check if the voltage property is normal. ←Check if the connector is connected properly. Check if the thermister resistance property is normal. ←Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor. ←Refer to [Check 7]

Irregular piping length

←Does the piping length fall in the permissible range?

Bend/collapse

←Corduet visual checks.

(Including moisture choke)

←Remove the moisture by vacuum break. (Refer to [Check 8])

Stop valve is closed.

←Check if the stop valve is open.

∗1: Refer to “Low pressure protective control” (P126) for hot gas bypass control. ∗2: Refer to P108 for subcooling electronic expansion valve control. ∗3: “Superheating temperature control” in cooling mode is conducted by indoor unit electronic expansion valve. (Refer to P143) ∗4: Superheating temperature control in heating mode is conducted by outdoor unit electronic expansion valve (EVM). (Refer to P108). ∗5: Judgment criteria of superheat operation:
Suction gas superheating temperature: 10 degrees and over.  Discharge gas superheating temperature: 45 degrees and over, except for immediately after starting and drooping control, etc.. (Use the above stated values as a guide. Depending on the other conditions, the unit may be normal despite the values within the above scope.)

338

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[CHECK 4] Power Transistor Check Perform the following procedures prior to check. (1) Power Off. (2) Remove all the wiring connected to the PC board where power transistors are mounted on. ∗ Preparing a tester in the analog system is recommended. A tester in the digital system with diode check function will be usable.

[Preparation] · Tester

[Point of Measurement and Judgment Criteria] · Measure the resistance value using a tester at each point of measurement below, 10 minutes later after power OFF. To use analog tester: Measurement in the resistance value mode in the range of multiplying 1kΩ. No. 1 2 3 4 5 6 7 8 9 10 11 12

Point of Measurement + – P2 U P2 V P2 W U P2 V P2 W P2 N3 U N3 V N3 W U N3 V N3 W N3

Judgment Criteria

To use digital tester: Measurement is executed in the diode check mode. (

Remarks

No. 1 2 3 4 5 6 7 8 9 10 11 12

2 ~ 15kΩ

Due to condenser charge 15kΩ and and so on, resistance above measurement may require (including ) some time.

2 ~ 15kΩ

Point of Measurement + – P2 U P2 V P2 W U P2 V P2 W P2 N3 U N3 V N3 W U N3 V N3 W N3

Judgment Criteria

)

Remarks

Due to condenser charge and so on, resistance 1.2V and over measurement may require some time.

0.3 ~ 0.7V

Due to condenser charge and so on, resistance 1.2V and over measurement may require some time.

[PC board and Circuit Diagram]

J1 J2 J3

P1 DM

P3 P1

N3 U V

W

P2 P3

IGBT

X10A K2 L1 L2 L3

J1 J2 J3 N3

U

V

W X11A

(V2895)

Troubleshooting

339

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[CHECK 5] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points.

Local pressure rise [In cooling] If the outdoor unit electronic expansion valve is throttled: (See *1.) Rise in high pressure Faulty high pressure control

High pipe resistance

Stop valve closed

←Check to be sure the stop valve is open.

Bent or crashed pipe

←Conduct visual checks for pipe conditions.

Clogging of foreign particles

←Is there any temperature difference caused before and after the filter or branch pipe.

Faulty outdoor Faulty valve coil unit motorized valve Faulty valve body A temperature difference in excess of 10°C between the inlet and the outlet is deemed to be abnormal. Faulty high pressure sensor Faulty control Faulty control PC board Faulty valve coil

Faulty indoor unit motorized valve

←Are the coil resistance and insulation normal?

←Are the electrical characteristics normal? ←Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? ←Are the coil resistance and insulation normal?

Faulty valve body Faulty high pressure sensor ←Are the electrical characteristics normal?

[In heating] If the indoor unit electronic expansion valve excessively throttled: (See *2.)

[In cooling] High suction air temperature of the condenser

Faulty control

Faulty indoor unit liquid pipe thermistor

←In the connector properly connected? Are the thermistor resistance characteristics normal?

Faulty control PC board

←Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor?

High suction air temperature of outdoor unit

Short circuit

←Is the suction air temperature not more than 43°C?

High ambient temperature

←Is the outdoor temperature not more than 43°C?

High suction air temperature of indoor unit

Short circuit

←Is the suction air temperature not more than 27°C?

High ambient temperature

←Is the indoor temperature not more than 27°C?

Faulty suction air thermistor of indoor unit

←Is the connector properly connected? Are the thermistor resistance characteristics normal?

High suction air temperature of outdoor unit

←Is the outdoor temperature not more than 16°CWB?

Faulty outdoor temperature thermistor of outdoor unit

←Is the connector properly connected? Are the thermistor resistance characteristics normal?

[In heating]

Degradation in condensing capacity

Dirty condenser

←Is the heat exchanger clogged? (In cooling)

Mixing of non-condensable gas

←Is air or else mixed in the refrigerant system?

Decreased fan airflow rate

Decreased fan output

High air passage resistance Excessive refrigerant charging Improper model selection [In heating]

Faulty fan motor Faulty control PC board (Including capacity setting)

←Can the fan motor be rotated with hands? Are the motor coil resistance and insulation normal? ←If a spare PC board is mounted, is the capacity setting properly made?

Dirty filter

←Is the air filter clogged?

Obstacle

←Is there any obstacle in the air passage?

←Refer to P262. ←Is the indoor unit too small compared to the large-sized outdoor unit?

*1: In cooling, it is normal if the outdoor unit electronic expansion valve (EVM) is fully open. *2: In heating, the indoor unit electronic expansion valve is used for “subcooled degree control”. (For details, refer to “Electronic Expansion Valve Control” on P143.) SDK04009

340

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[CHECK 6] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] (See *1.) Faulty low pressure control

Abnormally low low-pressure (Low evaporating temperature)

[In both cooling and heating] (See *2.) [In cooling] If the indoor unit electronic expansion valve is throttled too much: (See *3.) Faulty electronic expansion valve control

Faulty compressor capacity control Faulty low pressure protection control

Faulty indoor unit electronic expansion valve

Low suction air temperature of the evaporator

←Are the electrical characteristics normal?

Faulty control PC board

←Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor?

Faulty low pressure sensor

←Are the electrical characteristics normal?

Faulty hot gas solenoid valve

←Are the coil resistance and insulation normal?

Faulty control PC board

←Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor?

Faulty valve coil

←Are the coil resistance and insulation normal?

Faulty valve body

Faulty control

Faulty gas pipe thermistor of indoor unit

←Check for the thermistor resistance and connection.

Faulty liquid pipe thermistor of indoor unit

←Check for the thermistor resistance and connection.

Faulty control PC board Faulty outdoor unit electronic expansion valve

[In heating] If the outdoor unit electronic expansion valve excessively throttled: (See *4.) [In cooling]

Faulty low pressure sensor

Faulty valve coil Faulty valve body

Faulty control

Faulty low pressure sensor

←Are the electrical characteristics normal?

Faulty suction pipe thermistor

←Check for the thermistor resistance and connection.

Faulty control PC board Low suction air temperature of indoor unit

Short circuit

←Is the suction air temperature not less than 14˚C

Low ambient temperature

←Is the indoor temperature not more than 14˚C

Faulty suction air thermistor of indoor unit

←Is the connector properly connected? Are the thermistor resistance characteristics normal?

Low suction air temperature of outdoor unit

←Is the outdoor temperature not less than -20˚C

Faulty outdoor temperature thermistor of outdoor unit

←Is the connector properly connected? Are the thermistor resistance characteristics normal?

[In heating] High pipe resistance

Abnormal piping length

←Does the piping length fall in the permissible range?

Bent or crashed pipe

←Conduct visual checks for pipe conditions.

Clogging of foreign particles

←Is there any temperature difference caused before and after the filter or branch pipe?

Stop valve closed Less circulation quantity of refrigerant

Degradation in condensing capacity

←Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor? ←Are the coil resistance and insulation normal?

←Check to be sure the stop valve is open.

Inadequate refrigerant quantity

←Refer to P297.

Moisture choke

←Eliminate moisture by vacuum operation.

Dirty evaporator

←Is the heat exchanger clogged?

Decreased fan airflow rate

Decreased fan output High air passage resistance

Faulty fan motor

←Can the fan motor be rotated with hands? Are the motor coil resistance and insulation normal?

Faulty control PC board (Including capacity setting)

←If a spare PC board is mounted, is the capacity setting properly made?

Dirty filter

←Is the air filter clogged?

Obstacle

←Is there any obstacle in the air passage?

*1: For details of the compressor capacity control while in cooling, refer to “Compressor PI Control” on P100. *2: The “low pressure protection control” includes low pressure protection control and hot gas bypass control. For details, refer to P126. *3: In cooling, the indoor unit electronic expansion valve is used for “superheated degree control”. (For details, refer to P143.) *4: In heating, the outdoor unit electronic expansion valve (EVM) is used for “superheated degree control of outdoor unit heat exchanger”. (For details, refer to P108.)

Troubleshooting

SDK04009

341

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[CHECK 7] Broken Wire Check of the Connecting Wires 1. Procedure for checking outdoor-outdoor unit transmission wiring for broken wires On the system shown below, turn OFF the power supply to all equipment, short-circuit between the outdoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit A" that is farthest from the central remote controller, and then conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the central remote controller using a multiple meter. If there is continuity between the said terminal blocks, the outdoor-outdoor unit transmission wiring has no broken wires in it. If there is no continuity, the transmission wiring may have broken wires. With the outdooroutdoor unit terminal parts of the "Outdoor Unit A" short-circuited, conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the unified ON/OFF controller. If there is no continuity as well, conduct continuity checks between the outdoor-outdoor unit terminal parts of the "Outdoor Unit E", between the outdoor-outdoor unit terminal parts of the "Outdoor Unit D", between the outdoor-outdoor unit terminal parts of the "Outdoor Unit C", … in the order described, thus identifying the place with continuity. If the place with continuity can be identified, there may be broken wires in places before the said place with continuity. 2. Procedure for checking indoor-outdoor unit transmission wiring for broken wires (for checking the indoor-outdoor unit transmission wiring of the "Outdoor Unit C" for broken wires) Turn OFF the power supply to all equipment, short-circuit between the indoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit C, and then conduct continuity checks between the transmission wirings F1 and F2 of the "Indoor Unit a" that is farthest from the "Outdoor Unit C" using a multiple meter. If there is continuity between the said transmission wirings, the indoor-outdoor unit transmission wiring has no broken wires in it. If there is no continuity, the transmission wiring may have broken wires. With the indooroutdoor unit terminal parts of the "Outdoor Unit C" short-circuited, identify the place with continuity in the transmission wiring of the "Indoor Unit b", transmission wiring of the "Indoor Unit c", and transmission wiring of the "Indoor Unit d" in the order described. If the place with continuity can be identified, there may be broken wires in places before the said place with continuity.


Short-circuit between the outdoor-outdoor unit terminal parts.

 Check the transmission wiring for continuity. If there is continuity, the indoor-outdoor unit transmission has no broken wires in it.

Indoor-outdoor Unit Transmission Wiring

 Short-circuit between the indoor-outdoor unit terminal parts.

Outdoor-outdoor Unit Transmission Wiring


Check the transmission wiring for continuity. If there is continuity, the outdoor-outdoor unit transmission has no broken wires in it.

Unified ON/OFF controller

342

Central remote controller

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[CHECK 8] Master Unit Central Connector Setting Table The master unit central setting connector (CN1/X1A) is mounted at the factory. • To independently use a single unit of the intelligent Touch controller or a single unit of the central remote controller, do not dismount the master unit central setting connector (i.e., use the connector with the factory setting unchanged). • To independently use the schedule timer, insert an independent-use setting connector. No independent-use setting connector has been mounted at the factory. Insert the connector, which is attached to the casing of the main unit, in the PC board (CN1/X1A). (Independent-use connector=Master unit central setting connector) • To use two or more central equipment in combination, make settings according to the table shown below. Central equipment connection pattern Pattern Intelligent Central remote Touch controller controller


Unified ON/OFF Schedule timer controller

1 to 2 units

× (*1)

 





1 unit

× (*1) 1 to 8 units

1 to 2 units

1 to 4 units

1 to 16 units



× (*1)

1 unit 1 unit







Central remote controller

Provided

Not provided

Unified ON/OFF controller

Schedule timer

× (*1) 1 unit

 

Setting of master unit central setting connector(*2) Intelligent Touch controller Only a single unit: "Provided", Others: "Not provided"

1 to 16 units

1 unit 1 unit

Only a single unit: "Provided", Others: "Not provided"

All "Not provided"

Only a single unit: "Provided", Others: "Not provided"

All "Not provided"

Not provided Not provided

Only a single unit: "Provided", Others: "Not provided"

Not provided Provided

(*1) The intelligent Touch controller and the schedule timer are not available for combined use. (*2) The intelligent Touch controller, central remote controller, and the unified ON/OFF controller have been set to "Provided with the master unit central setting connector" at the factory. The schedule timer has been set to "Not provided with the master unit central setting connector" at the factory, which is attached to the casing of the main unit.

Troubleshooting

343

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[CHECK 9] Master-Slave Unit Setting Table Combination of Intelligent Touch Controller and Central Remote Controller Master

#1

Slave

#2

∗

#3

#1 Pattern

#4

#2

1-00~4-15

Master/ Slave

#3

5-00~8-15

Master/ Slave

#4

1-00~4-15

Master/ Slave

5-00~8-15

Master/ Slave




CRC

Master

CRC

Master

CRC

Slave

CRC

Slave



CRC

Master

—

—

CRC

Slave

—

—



Intelligent Touch controller

Master

—

—

Intelligent Touch controller

Slave

—

—



CRC

Master

—

—

Intelligent Touch controller

Slave

—

—



Intelligent Touch controller

Master

—

—

CRC

Slave

—

—



CRC

Master

—

—

—

—

—

—



Intelligent Touch controller

Master

—

—

—

—

—

—

CRC: Central remote controller Intelligent Touch controller: < DCS601C51 > ∗The patterns marked with “∗” have nothing to do with those described in the list of Setting of master unit central setting connector.

344

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[Check 10] Check for causes of wet operation. Referring to the Fault Tree Analysis (FTA) shown below, identify faulty points. Faulty crankcase heater Refrigerant accumulation Frequent ON/OFF of compressor

←Refer to information in the [Check 6] section.

Overcharge of refrigerant

[Cooling] Indoor unit motorized valve opens too much. (*1)

Faulty valve coil

Faulty indoor unit motorized valve

Faulty valve body

Faulty control

Faulty control of superheated degree

[Heating] Outdoor unit motorized valve opens too much. (*2)

Faulty indoor unit gas pipe thermistor

←Is the connector correctly connected? Are the thermistor resistance characteristics normal?

Faulty indoor unit liquid pipe thermistor

←Is the connector correctly connected? Are the thermistor resistance characteristics normal?

Faulty control PC board

Faulty valve body

←Does the valve coil have normal resistance and insulation? (Refer to information in the [Check 11] section.)

Faulty power pressure sensor

←Are the voltage characteristics normal?

Faulty suction pipe thermistor

←Is the connector correctly connected? Does the thermistor have normal resistance characteristics? ←Is the pressure reading of the service checker corresponding to the actual measurement of the sensor?

Faulty valve coil

Faulty outdoor unit motorized valve Wet operation

←Does the valve coil have normal resistance and insulation? (Refer to information in the [Check 11] section.)

Faulty control

Faulty control PC board

←Does the heat exchanger get clogged?

Dirty evaporator

←Can the fan motor be rotated by hand? Does the fan motor coil have normal resistance and insulation? Faulty control PC board

Faulty fan motor

Degraded evaporation capacity

Reduced fan output Reduced air quantity

(including faulty capacity setting) Increased resistance in air passage

Dirty filter

←Does the air filter get clogged?

Obstacles

←Are there any obstacles in the air passage?

*1: "Superheated degree control" in cooling operation is exercised with the indoor unit motorized valve. (Refer to information on P143.) *2: "Superheated degree control" in heating operation is exercised with the outdoor unit motorized valve (EV1). (Refer to information on P108.) *3: Guideline of superheated degree to judge as wet operation
Suction gas superheated degree: Not more than 3°C; Discharge gas superheated degree: Not more than 15°C, except immediately after compressor starts up or is running under drooping control. (Use the values shown above as a guideline. Even if the superheated degree falls in the range, the compressor may be normal depending on other conditions.)

Troubleshooting

345

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[Check 11] Check for overcharge of refrigerant. In case of VRV Systems, the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to information provided below. Diagnosis of overcharge of refrigerant 1. High pressure rises. Consequently, overload control is exercised to cause scant cooling capacity. 2. The superheated degree of suction gas lowers (or the wet operation is performed). Consequently, the compressor becomes lower in discharge pipe temperature despite of pressure loads. 3. The supercooled degree of condensate rises. Consequently, in heating operation, the temperature of outlet air passing through the supercooled section becomes lower. Cooling High-pressure drooping control HP gradually rises with increase in frequency.

Frequency comes to the minimum level. Supercooled degree becomes higher. (Liquid connection pipe temperature lowers.)

High pressure

(LP is maintained at a constant level.)

Low pressure

LP rises due to reduced compressor output.

Frequency To maintain LP, frequency increases under the capacity control. The outdoor unit motorized valve is closed due to the overload control.

Heating

Frequency comes to the minimum level. (HP is maintained at a constant level.)

High pressure

HP drops or rises immediately after the overload control is complete.

Low pressure LP rises due to reduced frequency. LP drops due to closed outdoor unit motorized valve. Hot gas bypass is activated for LP protection, i.e., hunting at LP.

Frequency To maintain HP, frequency reduces under the capacity control.

(Degree of overcharge) Proper quantity

346

Higher degree of overcharge

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[Check 12] Check for shortage of refrigerant. In case of VRV Systems, the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgment, refer to information provided below. Diagnosis of shortage of refrigerant 1. The superheated degree of suction gas rises. Consequently, the compressor discharge gas temperature becomes higher. 2. The superheated degree of suction gas rises. Consequently, the electronic expansion valve turns open. 3. Low pressure drops to cause the unit not to demonstrate cooling capacity (heating capacity). Cooling The opening degree of the indoor unit motorized valve becomes larger. Either of the motorized valves becomes fully open.

Fan control is activated for HP protection under cooling control at low outdoor temperature, i.e., the fan is hunting at HP.

Frequency comes to the minimum level.

High pressure HP drops with decrease in compressor capacity.

(LP is maintained at a constant level.)

Low pressure LP rises as the opening degree of the indoor unit motorized valve becomes larger. Frequency slightly increases under the capacity control.

If frequency comes to the minimum level, LP cannot be maintained.

Frequency To maintain LP, frequency drops due to the capacity control.

Heating The opening degree of the outdoor unit motorized valve becomes larger. The outdoor unit motorized valve fully opens and frequency increases. Discharge pipe or LP drooping control

High pressure

(HP is maintained at a constant level.)

Frequency comes to the minimum level.

Low pressure

Frequency To maintain LP, frequency drops due to the capacity control.

Frequency drops due to the drooping control.

(Degree of refrigerant shortage) Proper quantity

Troubleshooting

Higher degree of shortage

347

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[Check 13] Vacuuming and dehydration procedure Conduct vacuuming and dehydration in the piping system following the procedure for described below. Furthermore, if moisture may get mixed in the piping system, follow the procedure for described below.


Vacuuming and dehydration • Use a vacuum pump that enables vacuuming up to 100.7kPa (5 torr, -755 mmHg). • Connect manifold gauges to the service ports of liquid pipe and gas pipe and run the vacuum pump for a period of two or more hours to conduct evacuation to -100.7kPa or less. • If the degree of vacuum does not reach -100.7kPa or less even though evacuation is conducted for a period of two hours, moisture will have entered the system or refrigerant leakage will have been caused. In this case, conduct evacuation for a period of another one hour. • If the degree of vacuum does not reach -100.7kPa or less even though evacuation is conducted for a period of three hours, conduct leak tests.  Leaving in vacuum state • Leave the compressor at the degree of vacuum of -100.7kPa or less for a period of one hour or more, and then check to be sure that the vacuum gauge reading does not rise. (If the reading rises, moisture may have remained in the system or refrigerant leakage may have been caused.)  Refrigerant charge • Purge air from the manifold gauge connection hoses, and then charge a necessary quantity of refrigerant. - In case moisture may get mixed in the piping*
Vacuuming and dehydration • Follow the same procedure as that for 1) Normal vacuuming and dehydration described above.  Vacuum break • Pressurize with nitrogen gas up to 0.05MPa.  Vacuuming and dehydration • Conduct vacuuming and dehydration for a period of one hour or more. If the degree of vacuum does not reach -100.7kPa or less even though evacuation is conducted for a period of two hours or more, repeat vacuum break - vacuuming and dehydration.  Leaving in vacuum state • Leave the compressor at the degree of vacuum of -100.7kPa or less for a period of one hour or more, and then check to be sure that the vacuum gauge reading does not rise.  Refrigerant charge • Purge air from the manifold gauge connection hoses, and then charge a necessary quantity of refrigerant. ∗

348

In case of construction during rainy reason, if dew condensation occurs in the piping due to extended construction period, or rainwater or else may enter the piping during construction work:

Troubleshooting

Si37-701

Troubleshooting (OP: Unified ON/OFF Controller)

[Check 14] List of inverter-related malfunction codes

Protection device and others

Compressor current

Code

Name

Condition for determining malfunction

Major cause

L5

Instantaneous overcurrent of inverter compressor

• Inverter output current exceeds 32.3A even instantaneously.

• Liquid sealing • Faulty compressor • Faulty inverter PC board

L8

Overcurrent of inverter compressor (Electronic thermal)

• Compressor overload running An overcurrent of 19.0A or more continues for a period of 5 consecutive seconds or that of 16.1A or more continues for a period of 260 consecutive seconds. • The inverter loses synchronization.

• • • •

L1

Faulty inverter PC board

• No output is given.

• Faulty heavy current part of compressor

L9

Faulty startup of inverter compressor

• The compressor motor fails to start up.

• Liquid sealing or faulty compressor • Excessive oil or refrigerant • Faulty inverter PC board

E5

Inverter compressor lock

• The compressor is in the locked status (does not rotate).

• Faulty compressor

L4

Radiator fin temperature rise

• The radiator fin temperature reaches 93°C or more (while in operation).

• Malfunction of fan • Running in overload for an extended period of time • Faulty inverter PC board

U2

Power supply voltage error

• The inverter power supply voltage is high or low.

• Power supply error • Faulty inverter PC board

P1

Imbalanced power supply

• Power supply voltages get significantly imbalanced among three phases.

• Power supply error (imbalanced voltages of 2% or more) • Faulty inverter PC board • Dead inverter PC board

LC

Transmission error (between inverter PC board and control PC board)

• With the outdoor unit PC board, no • Broken wire in communication communications are carried out across control line PC board - inverter PC board - fan PC board. • Faulty control PC board • Faulty inverter PC board • Faulty fan PC board

PJ

PC board mismatching

• Any PC board of specification different from that of the product is connected.

P4

Faulty fin thermistor

• The fin thermistor gets short-circuited or open. • Faulty fin thermistor

Troubleshooting

Backflow of compressor liquid Sudden changes in loads Disconnected compressor wiring Faulty inverter PC board

• PC board of different specification mounted

349

Troubleshooting (OP: Unified ON/OFF Controller)

Si37-701

[Check 15] Concept of inverter-related malfunction codes Transmission error When transmissions between the main PC board and the inverter PC board are not normal

Main (Control) PC board

Instantaneous overcurrent of inverter compressor (When inverter output current exceeds 32.3A even instantaneously) Overcurrent of inverter compressor
An overcurrent of 19.0A or more continues for a period of 5 consecutive seconds An overcurrent of 16.1A or more continues for a period of 260 consecutive seconds.

LC

L5

Heavy-current part (Power transmission etc.)

U2

P1

L1

Imbalanced power supply voltage When imbalance in voltages among three phases comes to 2% or more Power supply voltage error When the power supply voltage falls out of the range of 400VAC±10%

P4

L4

Compressor

Weak-current Inverter PC board part

Power supply (3 phase, 400VAC)

L8

PJ

E5

Faulty startup of inverter compressor (Compressor stops running immediately after it starts up.)

PCB mismatching When incorrect inverter PC board is connected Radiator fin temperature rise When the radiator fin temperature reached 93˚C or more Faulty fin thermistor When the fin thermistor resistor detects an open circuit (-30˚C or less) or a short circuit (120˚C or more)

L9

Inverter compressor lock (Compressor does not run at all.)

Malfunction codes related to compressor current

Current

Faulty inverter When the heavy current part of inverter gets faulty (gives no output)

Instantaneous overcurrent

L5

32.3A

Compressor overcurrent (Electronic thermal 2)

19.0A

16.1A

L8 Compressor overcurrent (Electronic thermal 1)

L8

5 consecutive sec. 260 consecutive sec.

Max. control Time

350

Troubleshooting

Si37-701

Part 7 Appendix 1. Piping Diagrams..................................................................................352 1.1 Outdoor Unit .........................................................................................352 1.2 Indoor Unit............................................................................................357 1.3 BS Unit .................................................................................................360

2. Wiring Diagrams for Reference...........................................................361 2.1 2.2 2.3 2.4

Outdoor Unit .........................................................................................361 Field Wiring ..........................................................................................366 Indoor Unit............................................................................................369 BS Unit .................................................................................................384

3. List of Electrical and Functional Parts .................................................385 3.1 Outdoor Unit .........................................................................................385 3.2 Indoor Side ...........................................................................................390

4. Option List ...........................................................................................396 4.1 Option List of Controllers......................................................................396 4.2 Option Lists (Outdoor Unit)...................................................................398

5. Piping Installation Point.......................................................................399 5.1 Piping Installation Point ........................................................................399 5.2 The Example of a Wrong Pattern .........................................................400

6. 7. 8. 9.

Example of Connection (R-410A Type) ..............................................401 Thermistor Resistance / Temperature Characteristics........................405 Pressure Sensor .................................................................................407 Method of Checking the Inverter’s Power Transistors and Diode Modules ....................................................................................408 9.1 Method of Checking the Inverter’s Power Transistors and Diode Modules .....................................................................................408

Appendix

351

Piping Diagrams

Si37-701

1. Piping Diagrams 1.1

Outdoor Unit

S2NPL

3D058154A

REYQ8P / 10P / 12PY1

S1NPH

352

Appendix

Si37-701

Piping Diagrams

S2NPL

3D058153A

REYQ14P / 16PY1

S1NPH

Appendix

353

Piping Diagrams

Si37-701

REMQ8PY1

3D057743

354

Appendix

Si37-701

Piping Diagrams

REMQ10PY1, 12PY1

3D057742

Appendix

355

Piping Diagrams

Si37-701

REMQ14PY1, 16PY1

3D057741

356

Appendix

Si37-701

1.2

Piping Diagrams

Indoor Unit

FXCQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ

Gas piping connection port

Heat exchanger

Flare connection : φ15.9 or less Attached piping : Above φ19.1

(4)

Fan (2) (3) Liquid piping connection port (Flare connection)

Filter

(1) Electronic Filter expansion valve

DU220-602J

Code

Appendix

Name

Code

(1)

Electronic expansion valve

Y1E

(2)

Suction air temperature thermistor

R1T

(3)

Liquid pipe

R2T

(4)

Gas pipe

R3T

Capacity

GAS

20 / 25 / 32 / 40 / 50M(A) 63 / 80 / 100 / 125M(A) 200M(A) 250M(A)

φ12.7 φ15.9 φ19.1 φ22.2

Main function Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation. Used for thermostat control. Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation. Used for gas superheated degree control while in cooling operation. (mm) Liquid φ6.4 φ9.5 φ9.5 φ9.5

357

Piping Diagrams

Si37-701

FXZQ

„ Refrigerant pipe connection port diameters Model FXZQ20M / 25M / 32M / 40M / 50M

358

Gas φ12.7

(mm) Liquid φ6.4

Appendix

Si37-701

Piping Diagrams

FXDQ

4D043864H

„ Refrigerant pipe connection port diameters Model FXDQ20N(A), P / 25N(A), P / 32N(A), P / 40N(A) / 50N(A)VE(T) FXDQ63N(A)VE(T)

Appendix

Gas

(mm) Liquid

φ12.7

φ6.4

φ15.9

φ9.5

359

Piping Diagrams

Si37-701

FXDYQ Gas pipe connection port

Heat exchanger

M

Fan Liquid pipe connection port Filter

Filter Electronic expansion valve 4PDA0350

„ Refrigerant pipe connection port diameters Model FXDYQ80M / 100M / 125M / 145MV1 FXDYQ180M / 200M FXDYQ250M

1.3

360

Gas φ 15.9 φ 19.1 φ 22.2

(mm) Liquid φ 9.5 φ 9.5 φ 9.5

BS Unit

Appendix

Si37-701

Wiring Diagrams for Reference

2. Wiring Diagrams for Reference 2.1

Outdoor Unit 3D056775D

REYQ8 / 10 / 12PY1

Appendix

361

Wiring Diagrams for Reference

Si37-701

3D056774C

REYQ14 / 16PY1

362

Appendix

Si37-701

Wiring Diagrams for Reference

3D055307E

REMQ8PY1

Appendix

363

Wiring Diagrams for Reference

Si37-701

3D055308E

REMQ10 / 12PY1

364

Appendix

Si37-701

Wiring Diagrams for Reference

3D055309E

REMQ14P / 16PY1

Appendix

365

Wiring Diagrams for Reference

2.2

Si37-701

Field Wiring 3D057764

REYQ8P / 10P / 12P / 14P / 16PY1

366

Appendix

Si37-701

Wiring Diagrams for Reference

3D057762

REYQ18P / 20P / 22P / 24P / 26P / 28P / 30P / 32PY1

Appendix

367

Wiring Diagrams for Reference

Si37-701

3D057763

REYQ34P / 36P / 38P / 40P / 42P / 44P / 46P / 48PY1

368

Appendix

Si37-701

2.3

Wiring Diagrams for Reference

Indoor Unit 3D039556A

FXCQ20M / 25M / 32M / 63MVE

Appendix

369

Wiring Diagrams for Reference

Si37-701

3D039557A

FXCQ40M / 50M / 80M/ 125MVE

370

Appendix

Si37-701

Wiring Diagrams for Reference

3D039600A

FXFQ25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE

Appendix

371

Wiring Diagrams for Reference

Si37-701

3D038359

FXZQ20M / 25M / 32M / 40M / 50M8V1B

372

Appendix

Si37-701

Wiring Diagrams for Reference

3D039564C

FXKQ25MA / 32MA / 40MA / 63MAVE

Appendix

373

Wiring Diagrams for Reference

Si37-701

3D045500C

FXDQ20P / 25P / 32P FXDQ20NA / 25NA / 32NA / 40NA / 50NA / 63NAVE (with Drain Pump)

374

Appendix

Si37-701

Wiring Diagrams for Reference

3D049604A

FXDQ20P / 25P / 32P FXDQ20N / 25N / 32N / 40N / 50N / 63NVET (without Drain Pump)

Appendix

375

LIGHT EMITTING DIODE (SERVICEMONITOR GREEN)

HAP

MOTOR (INDOOR FAN) THERMISTOR (AIR) THERMISTOR (COIL - LIQUID) THERMISTOR (COIL - SUCTION) TRANSFORMER (220-240V/22V) TERMINAL STRIP (POWER) TERMINAL STRIP (CONTROL) EXT. STATIC SELECTOR

OPTIONAL CONNECTOR - WIRING ADAPTOR FOR ELECTRICAL APPENDICES

ELECTRONIC EXPANSION VALVE

M1F R1T R2T R3T T1R X1M X2M X3M

X18A

Y1E

K1R ~K3R MAGNETIC RELAY

PRINTED CIRCUIT BOARD FAN CAPACITOR (See table) FUSE & HOLDER (See table) FUSE 5A 250V

A1P C1R F1U F2U Std

3

GRN/YLW

4

K3R 6

4

K2R 6

4

6

X3M

M

1~

1

F1U

M1F

8

RED

7 6

C1R

(see table)

High

K1R

4

RED

OGR

C1R 12µF 11µF 20µF

YLW

VOITEL

WTH

WTH

GYR GYR

BNR BNR

BLU BLU

FU (3AG Type) 5A Slow Blow 6.3A Slow Blow 8A Slow Blow

OGR

376 OGR

MODEL 80 100 & 125 145

NOTES 1.

T1R

N

BLUE

X7A

M t

t

X12A

R2T

R1T

X13A

Y1E

HAP

RYF1

RYF2

RYF3

X8A

FC

X4A FH

FLL FL

X30A

X11A X18A

t

R3T

BLK

PINK

0

1

PINK WHITE YELLOW ORANGE BLUE BLACK

K1R

BRN

T2 T1 F2 F1 P2 P1

X2M

1 0

K2R

K2R

T1R

X1M

F1U

K1R

C1R

X3M

K3R

SWITCH BOX

X2M

A1P

K3R

3PDA0313

4. GROUNDTHESHIELD OFTHE REMOTECONTROLLERCORDTO THE INDOOR UNIT.

0

WIRED REMOTE CONTROLLER (OPTIONALACCESSORY) 1 See Note 4

R1T

P2 P1

INPUTFROM OUTSIDE NOTE-3 TRANSMISSION WIRING CENTRAL REMOTECONTROLLER

GRY

: TERMINAL 3. INCASE USINGCENTRAL REMOTE 2. SYMBOLSSHOW ASFOLLOWS : CONNECTOR CONTROLLER,CONNECT ITTOTHE BLK : BLACK BLU: BLUE : FIELD WIRING UNIT IN ACCORDANCEWITHTHE ORG: ORANGE RED: RED : PLUG ANDSOCKET ATTACHED INSTALLATIONMANUAL. GRN: GREEN WHT: WHITE : JUMPERCONNECTOR GRY: GREY YLW: YELLOW : WIRECLAMP BRN: BROWM

X

X3A

L F2U

RED

L NE

POWER SUPPLY 220~240V 50Hz X1M

Wiring Diagrams for Reference Si37-701

FXDYQ80M / 100M / 125M / 145MV1

Appendix

Si37-701

Wiring Diagrams for Reference

FXDYQ180M / 200M / 250MV1

Appendix

377

Wiring Diagrams for Reference

Si37-701

3D039561B

FXSQ20M / 25M / 32M / 40M / 50M / 63M / 80M / 100M / 125MVE

378

Appendix

Si37-701

Wiring Diagrams for Reference

3D039620B

FXMQ40MA / 50MA / 63MA / 80MA / 100MA / 125MAVE

Appendix

379

Wiring Diagrams for Reference

Si37-701

3D039621B

FXMQ200MA / 250MAVE

380

Appendix

Si37-701

Wiring Diagrams for Reference

3D039801D

FXHQ32MA / 63MA / 100MAVE

Appendix

381

Wiring Diagrams for Reference

Si37-701

3D034206D

FXAQ20MA / 25MA / 32MAVE / 40MA / 50MA / 63MAVE

382

Appendix

Si37-701

Wiring Diagrams for Reference

3D039826D

FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE

Appendix

383

Wiring Diagrams for Reference

BS Unit 3D055928C

2.4

Si37-701

384

Appendix

Si37-701

List of Electrical and Functional Parts

3. List of Electrical and Functional Parts 3.1

Outdoor Unit

3.1.1 REYQ8PY1~12PY1 Item

Name

Inverter

Compressor

STD 1

STD 2

Type OC protection device Type OC protection device Type OC protection device

Symbol

M1C

JT170G-KYE@T

Electronic expansion valve (Main) Electronic expansion valve (Subcool) Electronic expansion valve (Refrigerant charge)

Y1E Y2E EV

Temperature protection

Others

Appendix

15.0A

M3C

M1F

Pressure protection

— 3.0A (for General overseas : 1.14A) Fully closed: 0pls Fully open: 1375pls Fully closed: 0pls Fully open: 480pls 0~480pls 3.0A

+0

For M1C

S1PH

OFF: 4.0 −0.12 MPa

High pressure For M2C switch

S2PH

OFF: 4.0 −0.12 MPa

For M3C Low pressure sensor Discharge gas temperature protection (Discharge pipe thermistor) Inverter fin temperature protection (Radiator fin thermistor)

Fuse

REYQ12PY1

14.7A

M2C

OC protection device

Fan motor

REYQ8PY1

Model REYQ10PY1 JT1GCVDKYR@SA

+0

ON: 3.0±0.15MPa ON: 3.0±0.15MPa

S3PH SENPL

— OFF: 0.07MPa

R3T

OFF: 135°C

R1T

OFF: 93°C

For main PC board

F1U F2U

250V AC 10A Class B Time-lag 3.15A AC 250V 250V AC 10A Class B Time-lag 3.15A AC 250V

For Noise filter PC board

F1U

250V AC 5A Class B

385

List of Electrical and Functional Parts

Si37-701

3.1.2 REYQ14PY1~16PY1 Item

Name

Type OC protection device Type Compressor STD 1 OC protection device Type STD 2 OC protection device OC protection Fan motor device Electronic expansion valve (Main) Electronic expansion valve (Subcool) Electronic expansion valve (Refrigerant charge) Inverter

Pressure protection

Temperature protection

Others

386

Symbol

Model REYQ14PY1 REYQ16PY1 JT1GCVDKYR@SA

M1C

14.7A JT170G-KYE@T

M2C

15.0A JT170G-KYE@T

M3C

15.0A

M1F, M2F

1.2A

Y1E Y2E EV

Fully closed: 0pls Fully open: 1375pls Fully closed: 0pls Fully open: 480pls 0~480pls +0

For M1C

S1PH

OFF: 4.0 −0.12 MPa

High pressure For M2C switch

S2PH

OFF: 4.0 −0.12 MPa

For M3C

S3PH

+0 OFF: 4.0 −0.12 MPa

SENPL

OFF: 0.07MPa

R3T

OFF: 135°C

R1T

OFF: 93°C

For main PC board

F1U F2U

250V AC 10A Class B Time-lag 3.15A AC 250V 250V AC 10A Class B Time-lag 3.15A AC 250V

For Noise filter PC board

F1U

250V AC 5A Class B

Low pressure sensor Discharge gas temperature protection (Discharge pipe thermistor) Inverter fin temperature protection (Radiator fin thermistor)

Fuse

+0

ON: 3.0±0.15MPa ON: 3.0±0.15MPa

ON: 3.0±0.15MPa

Appendix

Si37-701

List of Electrical and Functional Parts

3.1.3 REMQ8PY1 Item

Name

Type OC protection device Type Compressor STD 1 OC protection device Type STD 2 OC protection device OC protection Fan motor device Electronic expansion valve (Main) Electronic expansion valve (Refrigerant charge) Electronic expansion valve (Subcool) Inverter

Pressure protection

Temperature protection

Others

Appendix

Model REMQ8PY1 JT1GCVDKYR@SA

Symbol

M1C

14.7A —

M2C

— —

M3C

—

M1F

3.0A

Y1E Y2E Y3E

Fully closed : 0pls Fully closed : 0pls Fully closed : 0pls

For M1C

S1PH

OFF : 4.0 −0.12 MPa

High pressure For M2C switch

S2PH

—

For M3C

S3PH

—

SENPL

OFF : 0.07MPa

R3T

OFF : 135°C

R1T

OFF : 93°C

For main PC board

F1U F2U

Time-lag 3.15A AC 250V / 250V AC 10A Class B Time-lag 3.15A AC 250V / 250V AC 10A Class B

For Noise filter PC board

F1U

250V AC 5A Class B

Low pressure sensor Discharge gas temperature protection (Discharge pipe thermistor) Inverter fin temperature protection (Radiator fin thermistor)

Fuse

Fully open : 480pls Fully open : 480pls Fully open : 480pls

+0

ON : 3.0±0.15MPa

387

List of Electrical and Functional Parts

Si37-701

3.1.4 REMQ10PY1~12PY1 Item

Name

Type OC protection device Type Compressor STD 1 OC protection device Type STD 2 OC protection device OC protection Fan motor device Electronic expansion valve (Main) Electronic expansion valve (Refrigerant charge) Electronic expansion valve (Subcool) Inverter

Pressure protection

Temperature protection

Others

388

Symbol

Model REMQ10PY1 REMQ12PY1 JT1GCVDKYR@SA

M1C

14.7A JT170G-KYE@T

M2C

15.0A —

M3C

—

M1F

3.0A

Y1E Y2E Y3E

Fully closed : 0pls Fully closed : 0pls Fully closed : 0pls

For M1C

S1PH

OFF : 4.0 −0.12 MPa

High pressure For M2C switch

S2PH

OFF : 4.0 −0.12 MPa

For M3C

S3PH

—

SENPL

OFF : 0.07MPa

R3T

OFF : 135°C

R1T

OFF : 93°C

For main PC board

F1U F2U

Time-lag 3.15A AC 250V / 250V AC 10A Class B Time-lag 3.15A AC 250V / 250V AC 10A Class B

For Noise filter PC board

F1U

250V AC 5A Class B

Low pressure sensor Discharge gas temperature protection (Discharge pipe thermistor) Inverter fin temperature protection (Radiator fin thermistor)

Fuse

Fully open : 480pls Fully open : 480pls Fully open : 480pls

+0

ON : 3.0±0.15MPa

+0

ON : 3.0±0.15MPa

Appendix

Si37-701

List of Electrical and Functional Parts

3.1.5 REMQ14PY1~16PY1 Item

Name

Type OC protection device Type Compressor STD 1 OC protection device Type STD 2 OC protection device OC protection Fan motor device Electronic expansion valve (Main) Electronic expansion valve (Refrigerant charge) Electronic expansion valve (Subcool) Inverter

Pressure protection

Temperature protection

Others

Appendix

Symbol

Model REMQ14PY1 REMQ16PY1 JT1GCVDKYR@SA

M1C

14.7A JT170G-KYE@T

M2C

15.0A JT170G-KYE@T

M3C

15.0A

M1F, M2F

1.2A

Y1E Y2E Y3E

Fully closed : 0pls Fully closed : 0pls Fully closed : 0pls

For M1C

S1PH

OFF : 4.0 −0.12 MPa

High pressure For M2C switch

S2PH

OFF : 4.0 −0.12 MPa

For M3C

S3PH

OFF : 4.0 −0.12 MPa

Low pressure sensor Discharge gas temperature protection (Discharge pipe thermistor) Inverter fin temperature protection (Radiator fin thermistor)

Fuse

Fully open : 480pls Fully open : 480pls Fully open : 480pls

+0 +0 +0

ON : 3.0±0.15MPa ON : 3.0±0.15MPa ON : 3.0±0.15MPa

SENPL

OFF : 0.07MPa

R3T

OFF : 135°C

R1T

OFF : 93°C

For main PC board

F1U F2U

Time-lag 3.15A AC 250V / 250V AC 10A Class B Time-lag 3.15A AC 250V / 250V AC 10A Class B

For Noise filter PC board

F1U

250V AC 5A Class B

389

List of Electrical and Functional Parts

3.2

Si37-701

Indoor Side

3.2.1 Indoor Unit Model Parts Name

Remote Controller

Symbol

FXFQ25 MVE

FXFQ32 MVE

FXFQ40 MVE

FXFQ50 MVE

Wired Remote Controller

FXFQ100 FXFQ125 Remark MVE MVE

FXFQ80 MVE

BRC1C62 Option

Wireless Remote Controller Fan Motor

FXFQ63 MVE

BRC7E61W M1F

DC380V 30W 8P

DC 380V 120W 8P

Drain Pump

M1P

AC220-240V (50Hz) AC220V (60Hz) PLD-12230DM Thermal Fuse 145°C

Swing Motor

M1S

MP35HCA[3P007482-1] Stepping Motor DC16V

Thermistor (Suction Air)

R1T

In PC board A4P or wired remote controller

Thermistor (for Heat Thermistors Exchanger High Temp.)

R3T

ST8605-5 φ8 L1000 20kΩ (25°C)

R2T

ST8602A-5 φ6 L1000 20kΩ (25°C)

Motors

Thermistor (Heat Exchanger)

Others

Float Switch

S1L

FS-0211B

Fuse

F1U

250V 5A φ5.2

Thermal Fuse

TFu

—

Transformer

T1R

— Model

Parts Name

Remote Controller

Symbol

FXCQ 20MVE

FXCQ 25MVE

FXCQ 32MVE

FXCQ 40MVE

FXCQ 50MVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC7C62

FXCQ 63MVE

FXCQ 80MVE

FXCQ Remark 125MVE Option

AC 220~240V 50Hz Fan Motor

M1F

1φ10W

1φ15W Thermal Fuse 152°C

Motors

1φ20W

1φ30W

—

Drain Pump

M1P

AC220-240V (50Hz) AC220V (60Hz) PLD-12230DM Thermal Fuse 145°C

Swing Motor

M1S

MT8-L[3PA07509-1] AC200~240V

Thermistor (Suction Air)

R1T

ST8601-6 φ4 L1250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-6 φ8 L1250 20kΩ (25°C)

Thermistor (Heat Exchanger)

R2T

ST8602A-5 φ6 L1000 20kΩ (25°C)

Float Switch

S1L

FS-0211B

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

Others

390

1φ50W

1φ85W

Thermal protector 135°C : OFF

87°C : ON

Appendix

Si37-701

List of Electrical and Functional Parts

Model Parts Name

Remote Controller

Symbol

Wired Remote Controller

FXZQ 20MVE

FXZQ 25MVE

FXZQ 32MVE

FXZQ 40MVE

FXZQ 50MVE

Remark

BRC1C61 Option

Wireless Remote Controller

BRC7E530W AC 220~240V 50Hz

Fan Motor

M1F

1φ55W 4P Thermal Fuse 135°C

C1

4.0µ F 400VAC

Drain Pump

M1P

AC220-240V (50Hz) PLD-12230DM Thermal Fuse 145°C

Swing Motor

M1S

MP35HCA [3P080801-1] AC200~240V

Thermistor (Suction Air)

R1T

ST8601A-1 φ4 L250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-3 φ8 L630 20kΩ (25°C)

Thermistor (Heat Exchanger)

R2T

ST8602A-3 φ6 L630 20kΩ (25°C)

Float Switch

S1L

FS-0211

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

Motors

Others

Appendix

Capacitor, fan motor

391

List of Electrical and Functional Parts

Si37-701

Model Parts Name

Remote Controller

Symbol

FXKQ 25MAVE

FXKQ 32MAVE

FXKQ 40MAVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C61

Remark

FXKQ 63MAVE

Option

AC 220~240V 50Hz Fan Motor

M1F

1φ15W 4P

1φ20W 4P

Thermal Fuse 146°C Motors Drain Pump

M1P

AC 220-240V (50Hz) PLD-12200DM Thermal Fuse 145°C

Swing Motor

M1S

MP35HCA [3P080801-1] AC200~240V

Thermistor (Suction Air)

R1T

ST8601-13 φ4 L630 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-7 φ8 L1600 20kΩ (25°C)

R2T

ST8602A-7 φ6 L1600 20kΩ (25°C)

Thermistor (Heat Exchanger) Others

1φ45W 4P

Thermal protector 120°C : OFF ON

Float Switch

S1L

FS-0211B

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

105°C :

Model Parts Name

Remote Controller

Symbol

FXDQ FXDQ FXDQ FXDQ 20N(A)VE(T), 25N(A)VE(T), 32N(A)VE(T), 40N(A)VE(T) PVE(T) PVE(T) PVE(T)

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C62

FXDQ 50N(A)VE(T)

Remark FXDQ 63N(A)VE(T)

Option AC 220~240V 50Hz

Fan Motor

M1F

1φ62W

1φ130W

Thermal protector 130°C: OFF, 83°C: ON

Motors Drain Pump

M1P

AC220-240V (50Hz) PLD-12230DM Thermal Fuse 145°C

Thermistor (Suction Air)

R1T

ST8601-1 φ4 L=250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-4 φ8 L=800 20kΩ (25°C)

R2T

ST8602A-4 φ6 L=800 20kΩ (25°C)

Thermistor (Heat Exchanger) Others

Float Switch

S1L

FS-0211E

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

∗

∗

∗only for FXDQ20~63N(A)VE, FXDQ20~32PVE (with Drain Pump Type)

392

Appendix

Si37-701

List of Electrical and Functional Parts

Parts Name

Remote Controller

Symbol

Model Remark FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ FXSQ 20MVE 25MVE 32MVE 40MVE 50MVE 63MVE 80MVE 100MVE 125MVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C62

Option AC 220~240V 50Hz

Fan Motor

M1F

Motors

1φ50W

1φ65W

1φ85W

1φ125 W

Thermal protector 135°C : OFF 87°C : ON

Thermal Fuse 152°C Drain Pump

M1P

AC220-240V (50Hz) PLD-12230DM Thermal Fuse 145°C

Thermistor (Suction Air)

R1T

ST8601-4 φ4 L800 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-7 φ8 L1600 20kΩ (25°C)

R2T

ST8602A-6 φ6 L1250 20kΩ (25°C)

Thermistor (Heat Exchanger) Others

Float Switch

S1L

FS-0211B

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

Parts Name

Remote Controller

Symbol

1φ225W

Model FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ Remark 40MAVE 50MAVE 63MAVE 80MAVE 100MAVE 125MAVE 200MAVE 250MAVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C62

Option AC 220~240V 50Hz

Fan Motor

M1F

Motors

1φ100W

1φ160W

1φ270W

Thermal protector 135°C : OFF 7µ F 400V

1φ430W

1φ380W×2

87°C : ON

10µ F 400V

8µ F 400V

10µ F 400V

12µ F 400V

Capacitor for Fan Motor

C1R

Thermistor (Suction Air)

R1T

ST8601A-5 φ4 L1000 20kΩ (25°C)

ST8601A-13 φ4 L630

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605A-4 φ8 L800 20kΩ (25°C)

ST8605A-5 φ8 L1000

R2T

ST8602A-4 φ6 L800 20kΩ (25°C)

ST8602A-6 φ6 L1250

Thermistor (Heat Exchanger) Others

Appendix

Float switch

S1L

Fuse

F1U

Transformer

T1R

5µ F-400V

FS-0211 250V 5A φ5.2

250V 10A φ5.2

250V 10A

TR22H21R8

393

List of Electrical and Functional Parts

Si37-701

Model Parts Name

Remote Controller

Symbol

FXHQ 32MAVE

FXHQ 63MAVE

Wired Remote Controller

FXHQ 100MAVE

BRC1C62

Wireless Controller

Remark Option

BRC7E63W AC 220~240V/220V 50Hz/60Hz

Fan Motor

M1F

1φ63W

1φ130W

Thermal protector 130°C : OFF

Motors Capacitor for Fan Motor

C1R

80°C : ON

3.0µF-400V

9.0µF-400V

Swing Motor

M1S

MT8-L[3P058751-1] AC200~240V

Thermistor (Suction Air)

R1T

ST8601A-1 φ4 L250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-6 φ8 L = 1250 20kΩ (25°C)

ST8605-6 φ8 L = 1250 20kΩ (25°C)

R2T

ST8602A-6 φ6 L = 1250 20kΩ (25°C)

ST8602A-6 φ6 L = 1250 20kΩ (25°C)

Thermistor (Heat Exchanger) Others

Fuse

F1U

250V 5A φ5.2

Transformer

T1R

TR22H21R8

Model Parts Name

Remote Controller

Symbol

FXAQ 20MAVE

FXAQ 25MAVE

FXAQ 32MAVE

FXAQ 40MAVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC7E618

FXAQ 50MAVE

FXAQ 63MAVE

Remark

Option AC 220~240V 50Hz

Fan Motor

M1F

Motors

1φ40W

1φ43W

Thermal protector 130°C : OFF MP24 [3SB40333-1] AC200~240V

MSFBC20C21 [3SB40550-1] AC200~240V

Swing Motor

M1S

Thermistor (Suction Air)

R1T

ST8601-2 φ4 L400 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-2 φ8 L400 20kΩ (25°C)

R2T

ST8602-2 φ6 L400 20kΩ (25°C)

Thermistor (for Heat Exchanger) Others

394

80°C : ON

Float Switch

S1L

OPTION

Fuse

F1U

250V 5A φ5.2

Appendix

Si37-701

List of Electrical and Functional Parts

Model Parts Name

Remote Controller

Symbol

FXLQ 20MAVE

FXLQ 25MAVE

FXLQ 32MAVE

FXLQ 40MAVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C62

FXLQ 50MAVE

FXLQ 63MAVE

Remark

Option AC 220~240V 50Hz

Motors

Fan Motor

M1F

1φ15W

1φ25W Thermal protector 135°C : OFF

Capacitor for Fan Motor

C1R

1.0µF-400V

0.5µF-400V

1.0µF-400V

Thermistor (Suction Air)

R1T

ST8601-6 φ4 L1250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-9 φ8 L2500 20kΩ (25°C)

Thermistor (for Heat Exchanger)

R2T

ST8602A-9 φ6 L2500 20kΩ (25°C)

Fuse

F1U

AC250V 5A

Transformer

T1R

TR22H21R8

Others

1φ35W 120°C : ON 1.5µF-400V

2.0µF-400V

FXNQ 50MAVE

FXNQ 63MAVE

Model Parts Name

Remote Controller

Symbol

FXNQ 20MAVE

FXNQ 25MAVE

FXNQ 32MAVE

FXNQ 40MAVE

Wired Remote Controller

BRC1C62

Wireless Remote Controller

BRC4C62

Remark

Option AC 220~240V 50Hz

Motors

Fan Motor

M1F

1φ15W

1φ25W Thermal protector 135°C : OFF

Capacitor for Fan Motor

C1R

1.0µF-400V

0.5µF-400V

1.0µF-400V

Thermistor (Suction Air)

R1T

ST8601-6 φ4 L1250 20kΩ (25°C)

(for Heat Thermistors Thermistor Exchanger High Temp.)

R3T

ST8605-9 φ8 L2500 20kΩ (25°C)

Thermistor (for Heat Exchanger)

R2T

ST8602A-9 φ6 L2500 20kΩ (25°C)

Fuse

F1U

AC250V 5A

Transformer

T1R

TR22H21R8

Others

Appendix

1φ35W 120°C : ON 1.5µF-400V

2.0µF-400V

395

Option List

Si37-701

4. Option List 4.1

Option List of Controllers

Operation Control System Optional Accessories No.

Type Item H/R

Wireless

FXCQ-M

FXFQ-M

BRC7C62

BRC7E61W

FXZQ-M8 FXKQ-MA BRC7E530W7

BRC4C61

FXDQ-P FXDQ-NA BRC4C62

FXSQ-M BRC4C62

FXDYQ-M FXMQ-MA FXHQ-MA FXAQ-MA FXLQ-MA FXNQ-MA BRC4C62

BRC4C62

BRC7E63W

BRC7E618

BRC4C62

1

Remote controller

2

Wired remote controller with weekly schedule timer

3

Simplified remote controller (Exposed type)

—

BRC2C51

—

4

Remote controller for hotel use (Concealed type)

—

BRC3A61

—

5

Adaptor for wiring

KRP1B61

KRP1B59

KRP1B57

KRP1B61

KRP1B56

KRP1B61

KRP1C3

—

KRP1B61

6-1

Wiring adaptor for electrical appendices (1)

KRP2A61

KRP2A62

KRP2A62

KRP2A61

KRP2A53

KRP2A61

KRP2A62

KRP2A61

KRP2A61

6-2

Wiring adaptor for electrical appendices (2)

KRP4A51

KRP4A53

KRP4A53

KRP4A51

KRP4A54

KRP4A51

KRP4A52

KRP4A51

KRP4A51

7

Remote sensor

KRCS01-1

—

KRCS01-1

8

Installation box for adaptor PC board

9

External control adaptor for outdoor unit (Must be installed on indoor units)

BRC1C62

Wired

BRC1D61

Note 2,3

KRP1B96

Note 2,3

KRP1D98

DTA104A61

Note 4,6

KRP1B101

DTA104A62

BRC2C51 BRC3A61

KRCS01-1 — DTA104A61

Note 4,6

KRP1B101

Note 5

—

KRP4A91

DTA104A53

DTA104A61

Note 3

KRP1C93 DTA104A62

Note 2,3

—

KRP4A93

DTA104A61 DTA104A61

Note: 1. Installation box is necessary for each adaptor marked . 2. Up to 2 adaptors can be fixed for each installation box. 3. Only one installation box can be installed for each indoor unit. 4. Up to 2 installation boxes can be installed for each indoor unit. 5. Installation box is necessary for second adaptor. 6. Installation box is necessary for each adaptor. Various PC Boards No.

Part name

1

Adaptor for wiring

2

DIII-NET Expander Adaptor

Model No. KRP1B56 KRP1B57 KRP1B59 KRP1B61 KRP1C3 DTA109A51

Function „ PC board when equipped with auxiliary electric heater in the indoor unit. „ Up to 1,024 units can be centrally controlled in 64 different groups. „ Wiring restrictions (max. length: 1,000 m, total wiring length: 2,000 m, max. number of branches: 16) apply to each adaptor.

System Configuration No. 1 1-1 2

Part name

Electrical box with earth terminal (3 blocks) Unified ON/OFF controller

KJB311A

Electrical box with earth terminal (2 blocks)

2-2

Noise filter (for electromagnetic interface use only)

KJB212A

Schedule timer

4

Interface adaptor for SkyAir-series

For SkyAir, FD(Y)M-FA, FDY-KA FDYB-KA, FVY(P)J-A

DTA102A52

5

Central control adaptor kit

For UAT(Y)-K(A),FD-K

DTA107A55

6

Wiring adaptor for other air-conditioner

7-1

•Up to 64 groups of indoor units(128 units) can be connected, and ON/OFF, temperature setting and monitoring can be accomplished individually or simultaneously. Connectable up to 2 controllers in one system.

•Up to 16 groups of indoor units(128 units) can be turned, ON/OFF individually or simultaneously, and operation and malfunction can be displayed. Can be used in combination with up to 8 controllers.

KEK26-1 DST301BA61

3

D

Function

DCS301BA61

2-1

7

DTA103A51

•Programmed time weekly schedule can be controlled by unified control for up to 64 groups of indoor units (128 units). Can turn units ON/OFF twice per day.

•Adaptors required to connect products other than those of the VRV System to the high-speed DIII-NET communication system adopted for the VRV System. * To use any of the above optional controllers, an appropriate adaptor must be installed on the product unit to be controlled.

•Up to 1024 units can be centrally controlled in 64 different groups.

-NET

DTA109A51

Expander Adaptor Mounting plate

KRP4A92

Note: 1. Installation box for

396

Model No. DCS302CA61

Central remote controller

•Wiring restrictions (max. lengh : 1,000m, total wiring lengh : 2,000m, max. number of branches : 16) apply to each adaptor. •Fixing plate for DTA109A51

adaptor must be procured on site.

Appendix

Si37-701

Option List

Building Management System No.

Part name

1-1 1-2

intelligent Touch Controller

Model No.

Hardware intelligent Touch Controller

Basic

1

Option

•Air-Conditioning management system that can be controlled by a compact all-in-one unit.

Hardware DIII-NET plus adaptor

DCS601A52

•Additional 64 groups (10 outdoor units) is possible.

Software

P. P. D.

DCS002C51

•P. P. D.: Power Proportional Distribution function

Web

DCS004A51

•Monitors and controls the air conditioning system using the Internet and a Web browser application on a PC.

1-3 1-4

Electrical box with earth terminal (4 blocks)

KJB411A 128 units

2

Basic

Number of Hardware units to be connected

intelligent Manager III 2-1 Option

2-2

Function

DCS601C51

Software

2-3

•Wall embedded switch box.

DAM602B52

256 units

DAM602B51

512 units

DAM602B51x2

768 units

DAM602B51x3

1024 units

DAM602B51x4

•Air conditioner management system that can be controlled by personal computers.

P.P.D.

DAM002A51

•Power Proportional Distribution function

Web

DAM004A51

•Monitors and controls the air conditioning system using the Internet and a Web browser application on a PC.

Eco

DAM003A51

•ECO (Energy saving functions.)

Optional DIII Ai unit

DAM101A51

•External temperature sensor for intelligent Manager III.

2-5

Di unit

DEC101A51

•8 pairs based on a pair of On/Off input and abnormality input.

2-6

Dio unit

DEC102A51

•4 pairs based on a pair of On/Off input and abnormality input.

DMS502B51

•Interface unit to allow communications between VRV and BMS. Operation and monitoring of airconditioning systems through BACnet communication.

Optional DIII board

DAM411B51

•Expansion kit, installed on DMS502B51, to provide 2 more DIII-NET communication ports. Not usable independently.

Optional Di board

DAM412B51

•Expansion kit, installed on DMS502B51, to provide 16 more wattmeter pulse input points. Not usable independently.

*2 Interface for use in LONWORKS

DMS504B51

•Interface unit to allow communications between VRV and BMS. Operation and monitoring of airconditioning systems through LONWORKS communication.

Parallel interface Basic unit

DPF201A51

•Enables ON/OFF command, operation and display of malfunction; can be used in combination with up to 4 units.

Temperature measurement units

DPF201A52

•Enables temperature measurement output for 4 groups; 0-5VDC.

Temperature setting units

DPF201A53

•Enables temperature setting input for 16 groups; 0-5VDC.

DCS302A52

•Interface between the central monitoring board and central control units.

3 3-1 3-2 4

Communication line

2-4

6 7 8

Contact/analog signal

5

*1 Interface for use in BACnet

®

®

Unification adaptor for computerized control

®

®

Notes: 1. BACnet® is a registered trademark of American Society of Heating, Refrigerating and AirConditioning Engineers (ASHRAE). ★ 2. LONWORKS®‚ is a registered trade mark of Echelon Corporation. ★ 3. Installation box for adaptor must be procured on site. ★

Appendix

397

Option List

4.2

Si37-701

Option Lists (Outdoor Unit)

REYQ8 ~ 16PY1(E) Series Models

VRV III H/R REYQ8PY1

REYQ10PY1 REYQ12PY1 REYQ14PY1 REYQ16PY1

REYQ8PY1E

Distributive Piping

Optional accessories

REYQ10PY1E REYQ12PY1E REYQ14PY1E REYQ16PY1E

Refnet header

Model

KHRP25M33H (Max. 8 branch)

KHRP25M33H, KHRP25M72H (Max. 8 branch) (Max. 8 branch)

Refnet joint

Model

KHRP25A22T, KHRP25A33T

KHRP25A22T, KHRP25A33T (KHRP25A72T+KHRP25M72TP)

Central drain pan kit

Model

KWC25C450

KWC25C450E

KWC25C450

KWC25C450E

Digital pressure gauge kit

Model

BHGP26A1

BHGP26A1E

BHGP26A1

BHGP26A1E C : 3D057610A

REYQ18 ~ 32PY1(E) Series Models

VRV III H/R REYQ18PY1

REYQ20PY1 REYQ22PY1 REYQ24PY1

REYQ18PY1E

Distributive Piping

Optional accessories

REYQ20PY1E REYQ22PY1E REYQ24PY1E

Refnet header

Model

KHRP25M33H, KHRP25M72H (Max. 8 branch) (Max. 8 branch)

KHRP25M33H, KHRP25M72H, KHRP25M73H (Max. 8 branch) (Max. 8 branch) (Max. 8 branch)

Refnet joint

Model

KHRP25A22T, KHRP25A33T (KHRP25A72T+KHRP25M72TP)

KHRP25A22T, KHRP25A33T, (KHRP25A72T+ KHRP25M72TP), (KHRP25A73T+KHRP25M73TP)

Outdoor unit multi connection piping kit

Model

Central drain pan kit

Model

KWC26C280×2

KWC26C280E×2

BHFP26P90 KWC26C280×2

KWC26C280E×2

Digital pressure gauge kit

Model

BHGP26A1

BHGP26A1E

BHGP26A1

BHGP26A1E

REYQ26PY1 REYQ28PY1

REYQ26PY1E REYQ28PY1E

REYQ30PY1 REYQ32PY1

REYQ30PY1E REYQ32PY1E

Series Models Distributive Piping

Optional accessories

VRV III H/R

Refnet header

Model

KHRP25M33H, KHRP25M72H, KHRP25M73H (Max. 8 branch) (Max. 8 branch) (Max. 8 branch)

Refnet joint

Model

KHRP25A22T, KHRP25A33T, (KHRP25A72T+KHRP25M72TP), (KHRP25A73T+KHRP25M73TP)

Outdoor unit multi connection piping kit

Model

Central drain pan kit

Model

Digital pressure gauge kit

Model

BHFP26P90 KWC26C280 KWC26C450 BHGP26A1

KWC26C280E KWC26C450E

KWC26C450×2

KWC26C450E×2

BHGP26A1E

BHGP26A1

BHGP26A1E C : 3D057611C

REYQ34 ~ 48PY1(E) Series

VRV III H/R REYQ34PY1 REYQ36PY1 REYQ38PY1 REYQ40PY1

Models Distributive Piping

Optional accessories

REYQ34PY1E REYQ36PY1E REYQ38PY1E REYQ40PY1E

Refnet header

Model

KHRP25M33H, KHRP25M72H, KHRP25M73H (Max. 8 branch) (Max. 8 branch) (Max. 8 branch)

Refnet joint

Model

KHRP25A22T, KHRP25A33T, (KHRP25A72T+ KHRP25M72TP), (KHRP25A73T+KHRP25M73TP)

Outdoor unit multi connection piping kit

Model

Central drain pan kit

Model

Digital pressure gauge kit

Model

BHFP26P136 KWC26C280×2 KWC26C450 BHGP26A1

KWC26C280E×2 KWC26C450E

REYQ42PY1E REYQ44PY1E

REYQ46PY1 REYQ48PY1

BHGP26A1E

Series

KWC26C280 KWC26C450×2 BHGP26A1

VRV III H/R

Models Optional accessories Distributive Piping

REYQ42PY1 REYQ44PY1

Refnet header

Model

KHRP25M33H, KHRP25M72H, KHRP25M73H (Max. 8 branch) (Max. 8 branch) (Max. 8 branch)

Refnet joint

Model

KHRP25A22T, KHRP25A33T, (KHRP25A72T+ KHRP25M72TP), (KHRP25A73T+KHRP25M73TP)

REYQ46PY1E REYQ48PY1E

Outdoor unit multi connection piping kit

Model

Central drain pan kit

Model

KWC26C280E KWC26C450E×2

KWC26C450×3

BHFP26P136

KWC26C450×3

Digital pressure gauge kit

Model

BHGP26A1E

BHGP26A1

BHGP26A1E C : 3D057612C

Note): Order products 398

Appendix

Si37-701

Piping Installation Point

5. Piping Installation Point 5.1

Piping Installation Point

5m or less than 5m Maximum length from a connection kit. 10m or less from first branch. (Equivalent Piping Length 13m)

Connection Kit B

Connection Kit A

Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope. (V3036)

The projection part between multi connection piping kits When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more, prepare a vertical projection part (200mm or more as shown below) only on the gas pipe line location less than 2m from multi connection kit. In the case of 2m or less

Less than 2m

(V3037)

In the case of 2m or more

Vertical Projection 200mm or more Less than 2m 2m or more

Vertical Projection

Less than 2m

Appendix

Vertical Projection

Less than 2m

(V3038)

399

Piping Installation Point

5.2

Si37-701

The Example of a Wrong Pattern Wrong

× Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039)

Wrong

× Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping.

The example of installation on which oil is not collected.

Good

Good

Vertical Projection

(V3040)

Outdoor Unit - Multi Connection Piping Kit Actual piping length 10m or less, equivalent length 13m or less piping length 165m or less, equivalent length 190m or Max.allowable Multi Connection Piping Kit - Indoor Unit Actual less, the total extension 1000m or less Piping Length Actual piping length 40m or less REFNET Joint - Indoor Unit (Refer to Page 403 Note 2 in case of up to 90m) Outdoor Unit - Outdoor Unit 5m or less Allowable Outdoor Unit is above 50m or less ★90m or less Level Outdoor Unit - Indoor Unit Outdoor Unit is below 90m Difference Indoor Unit - Indoor Unit 15m or less

Note: ★ Available on request if the outdoor unit is above.

400

Appendix

Si37-701

Example of Connection (R-410A Type)

6. Example of Connection (R-410A Type) Branch with REFNET joint

Example of connection (Connection of 8 indoor units)

Outdoor unit REFNET joint (A~G) REFNET header

REFNET joint (A~G)

f i

B1

G

F g

k

1

j 2

3

E

n p B3 B4

B2 m

D

o 4

c r

Piping from BS unit to indoor unit or Piping from Refrigerant branch kit to indoor unit used as cooling only (Thin):2 pipes (Suction) gas pipe Liquid pipe

s d

6

7

B3 h

f 1

2

3

p B o

k 5

6

d f b B1 B2 B3 e c g

8 7

8

B1 ~ B4 : BS Unit 1~6 : Indoor unit (Cool/Heat selection possible) 7, 8 : Indoor unit (Cooling only)

B1 ~ B5 : BS Unit 1 ~ 4 , 7 , 8 : Indoor unit (Cool/Heat selection possible) 5, 6 : Indoor unit (Cooling only)

First outdoor unit multi connection piping kit Outdoor unit

Outdoor unit

H3

1

2

h B4

j B5 k

i

3

4

5

B6 m 6

n

o

7 8

B1 ~ B4 : BS Unit 1~6 : Indoor unit (Cool/Heat selection possible) 7, 8 : Indoor unit (Cooling only)

Outdoor unit REFNET joint (A~G)

(*1) "

s

r u

t REFNET joint (A~G) c

b

A

B

C

f i

E

n

p

m 2

3

o 4

q 5

b c

S

B1

7

B1 ~ B4 : BS Unit 1~6 : Indoor unit (Cool/Heat selection possible) 7, 8 : Indoor unit (Cooling only)

B3 h

f 1

8

B2 2

B5 n

3

B4 j 4

k 5

t REFNET header

p B o

i

g

e

d 6

H2

1

D

s

a

A

r

G

F g

k

m

a

e

d

r u

REFNET header

6

d f b B1 B2 B3 e c g

8 7

1

2

3

h B4

j B5 k

i 4

5

B6 m 6

n

o

7 H2

Multi outdoor system REYQ 18~48

t

H1

a

s

H1

r

H1

" Indicate the Outdoor unit multi connection piping kit. (*2) In case of multi outdoor system, re-read "outdoor unit" to "the first Outdoor unit multi connection piping kit" as seen from the indoor unit.

B2

B5 n

i B4 j 4

g

e B1

q 5

b

H1

C

H2

B

A

H3

Piping from outdoor unit to BS unit Suction gas pipe (Bold):3 pipes HP/LP gas pipe Liquid pipe

A

e

d

H2

Liquid pipe

Single outdoor system REYQ 8~16

c

b

a

H2

a

BS Unit

REFNET header

m

a H1

Gas pipe

H3

Liquid pipe

Branch with REFNET header

Outdoor unit

H2

Suction gas pipe HP/LP gas pipe

Outdoor unit

Indoor unit side (2 pipes)

H1

Outdoor unit side (3 pipes)

Branch with REFNET joint and header

B1 ~ B5 : BS Unit 1 ~ 4 , 7 , 8 : Indoor unit (Cool/Heat selection possible) 5, 6 : Indoor unit (Cooling only)

8

B1 ~ B4 : BS Unit 1~6 : Indoor unit (Cool/Heat selection possible) 7, 8 : Indoor unit (Cooling only)

Actual pipe length Between outdoor unit (*2) Equivalent Maximum and indoor unit length allowable Total extention length length Between first outdoor unit multi Actual and connection piping kit and outdoor unit Equivalent (in case of multi system) pipe length

Pipe length between outdoor unit (*2) and indoor unit ≤ 165m Example 6 : a + b + ≤ 165m, 8 : a + m + n + p ≤ 165m Example 8 : a + o ≤ 165m Example 8 : a + b + c + d + e + s ≤ 165m Equvalent pipe length between outdoor unit (*2) and indoor unit ≤ 190m (Note 1) (Assume eqivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, that of BSVQ100, 160 to be 4m, that of BSVQ250 to be 6m for calculation purposes) Total piping length from outdoor unit (*2) to all indoor unit ≤ 1000m Actual pipe length from first outdoor unit multi connection piping kit to outdoor unit ≤ 10m Outdoor unit r ≤ 10m Equivalent pipe length from first outdoor unit multi connection piping kit to outdoor unit ≤ 13m

Allowable Between outdoor and indoor units height Between indoor and indoor units difference Between outdoor and outdoor units

Difference in height between outdoor unit and indoor unit (H1) ≤ 50m (Max 40m if the outdoor unit is below) s r Difference in height between adjacent indoor units (H2) ≤ 15m u Difference in height between adjacent outdoor units (H3) ≤ 5m Actual pipe length from first refrigerant branch kit (either REFNET joint or REFNET header) to indoor unit ≤ 40m (Note 2) Example 8 : b + c + d + e + s ≤ 40m Example 6 : b + ≤ 40m, 8: m + n + p ≤ 40m Example 8 : o ≤ 40m

Allowable length after the branch

Appendix

Difference in height Difference in height Difference in height Actual pipe length

(Equivalent length ≤ 13m) u + s ≤ 10m (Equivalent length ≤ 13m) t u + t ≤ 10m (Equivalent length ≤ 13m)

401

Example of Connection (R-410A Type)

Si37-701

Outdoor unit multi connection piping kit and Refrigerant branch kit selection • Refrigerant branch kits can only be used with R410A. • When multi outdoor system are installed, be sure to use the special separately sold Outdoor unit multi connection piping kit. (BHFP26P90 · 136). (For how to select the proper kit, follow the table at right.) • Never use BHFP26M90 · 135, BHFP22M90 · 135P for M type of this series or T joint (field supplyed).

Example for indoor units connected downstream

Pipe size selection The thickness of the pipes in the table shows the requirements of Japanease High Pressure Gas Controll low. (As of Jan. 2003) The thickness and material shall be selected in accordance with local code.

For an outdoor unit installation, make the settings in accordance with the following figure. Outdoor unit

Equalizer pipe (part D) Piping between outdoor unit multi connection piping kit and outdoor unit (part C) Piping between outdoor unit multi connection piping kits (part B) Piping between outdoor unit and refrigerant branch kit (part A)

How to select the REFNET joint How to select the REFNET header Choose from the following table in accordance with the total capacity index of all When using REFNET joint at the first branch counted from the outdoor unit side, the indoor units connected below the REFNET header. choose from the following table in accordance with the outdoor unit capacity type. (Example : REFNET joint A) Indoor unit of FXY ~ P280 · 450 · 560 can not be connected below the REFNET header. Outdoor unit capacity type Refrigerant branch kit name Refrigerant branch kit name Indoor unit total capacity index 8,10HP type KHRP25A33T 2 pipes 3 pipes 12~22HP type KHRP25A72T+KHRP25M72TP x < 200 KHRP26M22H or KHRP26M33H KHRP25M33H 24HP type ~ KHRP25A73T+KHRP25M73TP 200 ≤ x < 290 KHRP26M33H 290 ≤ x < 640 KHRP25M72H+KHRP25M72HP KHRP26M72H Choose the REFNET joints other than the first branch from the following table in accordance with the total capacity index of all the indoor units connected below the REFNET joint. 640 ≤ x KHRP25M73H+KHRP25M73HP KHRP26M73H+KHRP26M73HP How to select the outdoor unit multi connection piping kit Refrigerant branch kit name Indoor unit total capacity index (This is required when the system is multi outdoor unit system.) 2 pipes 3 pipes Choose from the following table in accordance with the number of outdoor units. x < 200 KHRP26A22T KHRP25A22T 200 ≤ x < 290 KHRP26A33T KHRP25A33T Number of outdoor unit Connecting piping kit name 2 units BHFP26P90 290 ≤ x < 640 KHRP25A72T+KHRP25M72TP KHRP26A72T 3 units BHFP26P136 640 ≤ x KHRP25A73T+KHRP25M73TP Example REFNET joint B : Indoor units 7 + 8 Example REFNET header : Example REFNET joint C : Indoor units 5 + 6 + 7 + 8 Example REFNET header : Indoor units 1 + 2 + 3 + 4 + 5 + 6 Indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 Piping between outdoor unit (*2) and refrigerant branch kit (part A) Piping between refrigerant branch kits Choose from the following table in accordance with the outdoor unit system capacity type. Piping between refrigerant branch kit and BS unit Piping between outdoor unit multi connection piping kits (part B) Piping between BS unit and refrigerant branch kit Choose from the following table in accordance with the total capacity of all Choose from the following table in accordance with the total capacity type of all the the outdoor units connected upstream. (unit : mm) indoor units connected downstream. Piping size (O. D.) Outdoor unit *1 Connection piping must not exceed the refrigerant Piping size between outdoor HP/LP gas pipe Liquid pipe capacity type Suction gas pipe unit and refrigerant branch kit (part A). φ19.1 φ15.9 8HP type φ9.5 *2 When selecting 2 pipes line (gas pipe and liquid pipe), use Suction gas pipe φ22.2 10HP type column for gas pipe and Liquid pipe column for liquid pipe. φ19.1 (unit : mm) 12HP type φ12.7 Piping size (O. D.) 14,16HP type Indoor capacity index φ28.6 φ22.2 Suction gas pipe HP/LP gas pipe Liquid pipe 18HP type φ15.9 φ12.7 x < 150 φ15.9 20,22HP type φ19.1 φ9.5 φ15.9 150 ≤ x < 200 24HP type φ34.9 φ28.6 φ22.2 200 ≤ x < 290 26~34HP type φ19.1 290 ≤ x < 420 φ12.7 φ19.1 36HP type φ28.6 φ41.3 420 ≤ x < 640 φ15.9 φ34.9 38~48HP type 640 ≤ x < 920 φ34.9 φ28.6 φ19.1 920 ≤ x φ41.3 Piping between outdoor unit multi connection piping kit and outdoor unit (part C) Choose from the following table in accordance with the capacity type of Piping between refrigerant branch kit, BS unit and indoor unit the outdoor unit connected. (unit : mm) (unit : mm) Match to the size of the connection piping on the indoor unit. Piping size (O. D.) Outdoor unit Piping size (O. D.) HP/LP gas pipe Liquid pipe capacity type Suction gas pipe Indoor unit capacity type gas pipe Liquid pipe φ22.2 φ9.5 × 0.8 8,10HP type φ19.1 φ12.7 φ6.4 20 · 25 · 32 · 40 · 50 type 12HP type φ12.7 φ28.6 φ15.9 63 · 80 · 100 · 125 type φ22.2 14,16HP type φ19.1 φ9.5 200 type 250 type φ22.2 Equalizer pipe (part D) (outdoor multi system only) Piping size (O. D.) Temper grade and wall thickness for pipes (Temper grade, O type and 1/2H type indicate the material type specified in JIS H 3300.) Copper tube O. D. Temper grade Wall thickness (Min. requirement)

402

φ6.4

φ9.5 φ12.7 φ15.9 φ19.1 φ22.2 φ25.4 φ28.6 φ31.8 φ34.9 φ38.1 φ41.3 O type 1/2H type

0.80

0.80

0.80

0.99

0.80

0.80

0.88

0.99

1.10

1.21

1.32

(unit : mm) φ19.1

1.43

Appendix

Si37-701

Example of Connection (R-410A Type)

a

How to calculate the additional refrigerant to be charged

R=

Total length(m) of liquid piping size at φ22.2

Additional refrigerant to be charged : R(kg) R should be rounded off in units of 0.1 kg.

Total length(m) of liquid piping size at φ19.1)

0.37

Total length(m) of liquid piping size at φ15.9) Total length(m) of liquid piping size at φ9.5

0.18

Total length(m) of liquid piping size at φ12.7

0.059

Total length(m) of liquid piping size at φ6.4

0.26 1.02 0.12

0.022

REFRIGERANT AMOUNT FOR EXCEEDING CONNECTION CAPACITY OF INDOOR UNIT MODEL NAME INDOOR REYQ18 REYQ34 CONNECTION ~ ~ CAPACITY 32PY1 48PY1

HEAT RECOVER SYSTEM THE AMOUNT OF REFRIGERANT MODEL NAME REYQ8 ~ 16PY1 3.6kg REYQ18 ~ 20PY1 1.0kg REYQ22 ~ 24PY1 1.5kg REYQ26PY1 2.0kg REYQ28 ~ 30PY1 2.5kg REYQ32 ~ 40PY1 3.0kg REYQ42PY1 3.5kg REYQ44 ~ 46PY1 4.0kg REYQ48PY1 4.5kg

MORE THAN 100% 120% OR LESS MORE THAN 120% 130% OR LESS

0.5kg 0.5kg

1.0kg

Example for refrigerant branch using REFNET joint and REFNET header for the systems and each pipe length as shown below. Outdoor system : REYQ34PY1 Total capacity of indoor unit : 116%

a : φ19.1 × 30m b : φ19.1 × 20m c : φ9.5 × 10m d : φ9.5 × 10m

e : φ9.5 × 10m f : φ9.5 × 10m g : φ9.5 × 10m h : φ9.5 × 10m

i : φ9.5 × 10m j : φ9.5 × 10m k : φ9.5 × 20m l : φ9.5 × 20m

m : φ9.5 × 20m n : φ9.5 × 10m o : φ6.4 × 10m p : φ6.4 × 10m

r : φ12.7 × 3m s : φ9.5 × 3m t : φ9.5 × 3m u : φ15.9 × 1m

R = ( 50 × 0.26 + 1 × 0.18 + 3 × 0.12 + 156 × 0.059 + 20 × 0.022 )×1.02 + 3.0 + 0.5

a, b = 27.148

u 27.1kg

r

c~n, s, t

o, p

REYQ34PY1 116%

Round off in units of 0.1 kg. Note 1. When the equivalent pipe length between outdor and indoor units is 90m or more, the size of main pipes on the liquid side (refer to figure 9) must be increased according to the right table. (Never increase suction gas pipe and HP/LP gas pipe.) 1 4 2

5

6

System REYQ8 ~ 10PY1 REYQ12 ~ 16PY1 REYQ18 ~ 24PY1 REYQ26 ~ 48PY1

Liquid pipe φ9.5 → φ12.7 φ12.7 → φ15.9 φ15.9 → φ19.1 φ19.1 → φ22.2

It is necessary to increase the main pipes of outdoor unit and first refrigerant branch kit (liquid side) by one size, if the difference in height between outdoor unit and indoor unit is over than 50m.

1.Outdoor unit 2.Main pipes 3.Increase only liquid pipe size 4.First refrigerant branch kit 5.BS unit 6.Indoor unit

3 Note 2. Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be extended up to 90m if all the following conditions are satisfied. (In case of "Branch with REFNET joint")

Required Conditions

Example Drawings

1. It is necessary to increase the pipe size if the pipe length between the first branch kit and the final branch kit is over than 40m. (Reducer must be procured on site.) If the increased pipe size is larger than main pipe size, then increase the main (liquid, suction gas) pipe size to the same pipe size. (It is not necessary to increase the high and low pressure gas pipe.)

8 b + c + d + e + f + g + p ≤ 90 m increase the pipe size of b, c, d, e, f, g

2. For calculation of Total extension length, the actual length of above pipes must be doubled. (except main pipe and the pipes that are not increased)

a+b×2+c×2+d×2+e×2+f×2+g×2 + h + i + j + k + l + m + n + p ≤ 1000 m

3. Indoor unit to the nearest branch kit ≤ 40 m

h, i, j....... p ≤ 40 m

4. The difference between [Outdoor unit to the farthest indoor unit] and [Outdoor unit to the nearest indoor unit] ≤ 40 m

The farthest indoor unit 8 The nearest indoor unit 1 ( a + b + c + d + e + f + g + p ) - ( a + h ) ≤ 40 m

Increase the pipe size as follows φ 9.5 → φ12.7 φ12.7 → φ15.9

φ15.9 → φ19.1 φ19.1 → φ22.2

φ22.2 → φ25.4* φ28.6 → φ31.8*

REFNET joint (A-G)

Outdoor unit a

b A

h 1

c

d

B

C

i

j 2

e D

F

l 4

G

m 5

H1

g

f E

k 3

φ34.9 → φ38.1*

p

n 6

Indoor units ( 1 - 8 )

7 8

*If available on the site, use this size. Otherwise it can not be increased.

Appendix

403

Example of Connection (R-410A Type)

Si37-701

404

Appendix

Si37-701

Thermistor Resistance / Temperature Characteristics

7. Thermistor Resistance / Temperature Characteristics Indoor unit

Outdoor unit for fin thermistor R1T

TºC -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98

Appendix

0.0 88.0 79.1 71.1 64.1 57.8 52.3 47.3 42.9 38.9 35.3 32.1 29.2 26.6 24.3 22.2 20.3 18.5 17.0 15.6 14.2 13.1 12.0 11.1 10.3 9.5 8.8 8.2 7.6 7.0 6.7 6.0 5.5 5.2 4.79 4.46 4.15 3.87 3.61 3.37 3.15 2.94 2.75 2.51 2.41 2.26 2.12 1.99 1.87 1.76 1.65 1.55 1.46 1.38

For air suction For liquid pipe For gas pipe

R1T R2T R3T

Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe For Receiver outlet liquid pipe

R1T R2T R4T R5T R6T

T°C -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

0.0 197.81 186.53 175.97 166.07 156.80 148.10 139.94 132.28 125.09 118.34 111.99 106.03 100.41 95.14 90.17 85.49 81.08 76.93 73.01 69.32 65.84 62.54 59.43 56.49 53.71 51.09 48.61 46.26 44.05 41.95 39.96 38.08 36.30 34.62 33.02 31.50 30.06 28.70 27.41 26.18 25.01 23.91 22.85 21.85 20.90 20.00 19.14 18.32 17.54 16.80 16.10

0.5 192.08 181.16 170.94 161.36 152.38 143.96 136.05 128.63 121.66 115.12 108.96 103.18 97.73 92.61 87.79 83.25 78.97 74.94 71.14 67.56 64.17 60.96 57.94 55.08 52.38 49.83 47.42 45.14 42.98 40.94 39.01 37.18 35.45 33.81 32.25 30.77 29.37 28.05 26.78 25.59 24.45 23.37 22.35 21.37 20.45 19.56 18.73 17.93 17.17 16.45 15.76

T°C 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

0.0 16.10 15.43 14.79 14.18 13.59 13.04 12.51 12.01 11.52 11.06 10.63 10.21 9.81 9.42 9.06 8.71 8.37 8.05 7.75 7.46 7.18 6.91 6.65 6.41 6.65 6.41 6.18 5.95 5.74 5.14 4.96 4.79 4.62 4.46 4.30 4.16 4.01 3.88 3.75 3.62 3.50 3.38 3.27 3.16 3.06 2.96 2.86 2.77 2.68 2.60 2.51

(kΩ) 0.5 15.76 15.10 14.48 13.88 13.31 12.77 12.25 11.76 11.29 10.84 10.41 10.00 9.61 9.24 8.88 8.54 8.21 7.90 7.60 7.31 7.04 6.78 6.53 6.53 6.53 6.53 6.06 5.84 5.43 5.05 4.87 4.70 4.54 4.38 4.23 4.08 3.94 3.81 3.68 3.56 3.44 3.32 3.21 3.11 3.01 2.91 2.82 2.72 2.64 2.55 2.47

405

Thermistor Resistance / Temperature Characteristics

Si37-701

Outdoor Unit Thermistors for Discharge Pipe (R3T, R31∼33T)

T°C 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

406

0.0 640.44 609.31 579.96 552.00 525.63 500.66 477.01 454.60 433.37 413.24 394.16 376.05 358.88 342.58 327.10 312.41 298.45 285.18 272.58 260.60 249.00 238.36 228.05 218.24 208.90 200.00 191.53 183.46 175.77 168.44 161.45 154.79 148.43 142.37 136.59 131.06 125.79 120.76 115.95 111.35 106.96 102.76 98.75 94.92 91.25 87.74 84.38 81.16 78.09 75.14 72.32

0.5 624.65 594.43 565.78 538.63 512.97 488.67 465.65 443.84 423.17 403.57 384.98 367.35 350.62 334.74 319.66 305.33 291.73 278.80 266.51 254.72 243.61 233.14 223.08 213.51 204.39 195.71 187.44 179.57 172.06 164.90 158.08 151.57 145.37 139.44 133.79 128.39 123.24 118.32 113.62 109.13 104.84 100.73 96.81 93.06 89.47 86.04 82.75 79.61 76.60 73.71 70.96

T°C 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

0.0 72.32 69.64 67.06 64.60 62.24 59.97 57.80 55.72 53.72 51.98 49.96 48.19 46.49 44.86 43.30 41.79 40.35 38.96 37.63 36.34 35.11 33.92 32.78 31.69 30.63 29.61 28.64 27.69 26.79 25.91 25.07 24.26 23.48 22.73 22.01 21.31 20.63 19.98 19.36 18.75 18.17 17.61 17.07 16.54 16.04 15.55 15.08 14.62 14.18 13.76 13.35

0.5 70.96 68.34 65.82 63.41 61.09 58.87 56.75 54.70 52.84 50.96 49.06 47.33 45.67 44.07 42.54 41.06 39.65 38.29 36.98 35.72 34.51 33.35 32.23 31.15 30.12 29.12 28.16 27.24 26.35 25.49 24.66 23.87 23.10 22.36 21.65 20.97 20.31 19.67 19.05 18.46 17.89 17.34 16.80 16.29 15.79 15.31 14.85 14.40 13.97 13.55 13.15

T°C 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

0.0 13.35 12.95 12.57 12.20 11.84 11.49 11.15 10.83 10.52 10.21 9.92 9.64 9.36 9.10 8.84 8.59 8.35 8.12 7.89 7.68 7.47 7.26 7.06 6.87 6.69 6.51 6.33 6.16 6.00 5.84 5.69 5.54 5.39 5.25 5.12 4.98 4.86 4.73 4.61 4.49 4.38 4.27 4.16 4.06 3.96 3.86 3.76 3.67 3.58 3.49 3.41

(kΩ)) 0.5 13.15 12.76 12.38 12.01 11.66 11.32 10.99 10.67 10.36 10.06 9.78 9.50 9.23 8.97 8.71 8.47 8.23 8.01 7.78 7.57 7.36 7.16 6.97 6.78 6.59 6.42 6.25 6.08 5.92 5.76 5.61 5.46 5.32 5.18 5.05 4.92 4.79 4.67 4.55 4.44 4.32 4.22 4.11 4.01 3.91 3.81 3.72 3.62 3.54 3.45 3.37

Appendix

Si37-701

Pressure Sensor

8. Pressure Sensor Detected Pressure

PH = 1.38V-0.69 PL = 0.57V-0.28 PH : High pressure (MPa) PL : Low pressure (MPa) V : Voltage (V)

PH : Detected Pressure [High Side] MPa PL : Detected Pressure [Low Side] MPa VH : Output Voltage [High Side] VDC VL : Output Voltage [Low Side] VDC

High Pressure (PH)

Low Pressure (PL)

Output Voltage (VH, VL) (V3053)

Appendix

407

Method of Checking the Inverter’s Power Transistors and Diode Modules

Si37-701

9. Method of Checking the Inverter’s Power Transistors and Diode Modules 9.1

Method of Checking the Inverter’s Power Transistors and Diode Modules Checking failures in power semiconductors mounted on inverter PC board Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester.

1 Multiple tester : Prepare the analog type of multiple tester. For the digital type of multiple tester, those with diode check function are available for the checking.

1 Turn OFF the power supply. Then, after a lapse of 10 minutes or more, make measurement of resistance.

1 To make measurement, disconnect all connectors and terminals. Inverter PC board

J1 J2 J3

P1

P3

N3 U

V

W

Electronic circuit DM

P1

P2 P3

IGBT

X10A K2 J1 L1 J2 L2 L3 J3 N3

U

V

W X11A (V2895)

„ According to the checking aforementioned, it is probed that the malfunction results from the

faulty inverter.The following section describes supposed causes of the faulty inverter. 1 Faulty compressor (ground leakage) 1 Faulty fan motor (ground leakage) 1 Entry of conductive foreign particles 1 Abnormal voltage (e.g. overvoltage, surge (thunder), or unbalanced voltage) In order to replace the faulty inverter, be sure to check for the points aforementioned. 408

Appendix

Si37-701

Method of Checking the Inverter’s Power Transistors and Diode Modules

1. Power module checking When using the analog type of multiple tester, make measurement in resistance measurement mode in the x1kΩ range.

1

Measuring point + P3 U

2 3 4 5 6 7 8 9 10 11 12

P3 P3 U V W N3 N3 N3 U V W

No.

V W P3 P3 P3 U V W N3 N3 N3

Criterion

Remark

2 to 15kΩ

Not less than 15kΩ (including)

It may take time to determine the resistance due to capacitor charge or else.

2 to 15kΩ

2. Diode module checking When using the analog type of multiple tester, make measurement in resistance measurement mode in the x1kΩ range.

1

Measuring point + P1 J1

2 3 4 5 6 7 8 9 10 11 12

P1 P1 J1 J2 J3 N3 N3 N3 J1 J2 J3

No.

Appendix

J2 J3 P1 P1 P1 J1 J2 J3 N3 N3 N3

Criterion

Remark

2 to 15kΩ

Not less than 15kΩ (including)

2 to 15kΩ

It may take time to determine the resistance due to capacitor charge or else.

When using the digital type of multiple tester, make measurement in diode check mode ( ). No.

Measuring point + -

1 2 3 4

P3 P3 P3 U

U V W P3

5 6 7 8 9 10 11 12

V W N3 N3 N3 U V W

P3 P3 U V W N3 N3 N3

Criterion

Remark

Not less than 1.2V (including)

It may take time to determine the voltage due to capacitor charge or else.

0.3 to 0.7V

Not less than 1.2V (including)

It may take time to determine the voltage due to capacitor charge or else.

When using the digital type of multiple tester, make measurement in diode check mode ( ). No.

Measuring point + -

1 2 3 4

P1 P1 P1 J1

J1 J2 J3 P1

5 6 7 8 9 10 11 12

J2 J3 N3 N3 N3 J1 J2 J3

P1 P1 J1 J2 J3 N3 N3 N3

Criterion

Remark

Not less than 1.2V (including)

It may take time to determine the voltage due to capacitor charge or else.

0.3 to 0.7V

Not less than 1.2V (including)

It may take time to determine the voltage due to capacitor charge or else.

409

Method of Checking the Inverter’s Power Transistors and Diode Modules

Si37-701

410

Appendix

Si37-701

Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........................................412 1.1 Outline ..................................................................................................412 1.2 Refrigerant Cylinders............................................................................414 1.3 Service Tools........................................................................................415

Precautions for New Refrigerant (R-410A)

411

Precautions for New Refrigerant (R-410A)

Si37-701

1. Precautions for New Refrigerant (R-410A) 1.1

Outline

1.1.1 About Refrigerant R-410A „ Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3. Refrigerant composition Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.

Refrigerant name Composing substances Design pressure

HFC units (Units using new refrigerants) R-407C R-410A Non-azeotropic mixture Quasi-azeotropic mixture of HFC32, HFC125 and of HFC32 and JFC125 HFC134a (*1) (*1) 3.2 MPa (gauge pressure) 4.0 MPa (gauge pressure) = 32.6 kgf/cm2 = 40.8 kgf/cm2

Refrigerant oil Ozone destruction factor (ODP) Combustibility Toxicity

HCFC units R-22 Single-component refrigerant 2.75MPa (gauge pressure) = 28.0 kgf/cm2

Synthetic oil (Ether)

Mineral oil (Suniso)

0

0

0.05

None None

None None

None None

★1. Non-azeotropic mixture refrigerant: mixture of two or more refrigerants having different

boiling points. ★2. Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similar

boiling points. ★3. The design pressure is different at each product. Please refer to the installation manual for

each product. (Reference) 1 MPa

10.19716 kgf / cm2

Pressure-Enthalpy curves of HFC-32/125 (50/50wt%)

412

Precautions for New Refrigerant (R-410A)

Si37-701

Precautions for New Refrigerant (R-410A)

„ Thermodynamic characteristic of R-410A Temperature ( )

Steam pressure (kPa) Liquid Vapor

Precautions for New Refrigerant (R-410A)

Density (kg/m3 ) Liquid Vapor

Specific heat at constant pressure (kJ/kgK) Liquid Vapor

Specific enthalpy (kJ/kg) Liquid Vapor

Specific entropy (kJ/KgK) Liquid Vapor

413

Precautions for New Refrigerant (R-410A)

1.2

Si37-701

Refrigerant Cylinders „ Cylinder specifications

2 The cylinder is painted refrigerant color (pink). 2 The cylinder valve is equipped with a siphon tube.

Siphon tube

Cylinder

Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.

„ Handling of cylinders (1) Laws and regulations R-410A is liquefied gas, and the High-Pressure Gas Safety Law must be observed in handling them. Before using, refer to the High-Pressure Gas Safety Law. The Law stipulates standards and regulations that must be followed to prevent accidents with high-pressure gases. Be sure to follow the regulations.

(2) Handing of vessels Since R-410A is high-pressure gas, it is contained in high-pressure vessels. Although those vessels are durable and strong, careless handling can cause damage that can lead to unexpected accidents. Do not drop vessels, let them fall, apply impact or roll them on the ground. (3) Storage Although R-410A is not flammable, it must be stored in a well-ventilated, cool, and dark place in the same way as any other high-pressure gases. It should also be noted that high-pressure vessels are equipped with safety devices that releases gas when the ambient temperature reaches more than a certain level (fusible plug melts) and when the pressure exceeds a certain level (spring-type safety valve operates).

414

Precautions for New Refrigerant (R-410A)

Si37-701

1.3

Precautions for New Refrigerant (R-410A)

Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R-22,R-407C) can not be used for products that use new refrigerants. Be sure to use dedicated tools and devices. „ Tool compatibility Tool

Compatibility HFC HCFC R-410A R-407C R-22

Gauge manifold Charge hose

2Do not use the same tools for R-22 and R-410A. 2Thread specification differs for R-410A and R-407C.

✕

Charging cylinder

✕

{

Gas detector Vacuum pump (pump with reverse flow preventive function) Weighting instrument

{

✕ {

2Weighting instrument used for HFCs. 2The same tool can be used for HFCs. 2To use existing pump for HFCs, vacuum pump adaptor must be installed.

{

Charge mouthpiece

✕

Flaring tool (Clutch type) Torque wrench Pipe cutter

{ { {

Pipe expander

{

Pipe bender

{

Pipe assembling oil

✕

Refrigerant recovery device

Check your recovery device.

Refrigerant piping

Reasons for change

See the chart below.

2Seal material is different between R-22 and HFCs. 2Thread specification is different between R-410A and others. 2For R-410A, flare gauge is necessary. 2Torque-up for 1/2 and 5/8

2Due to refrigerating machine oil change. (No Suniso oil can be used.)

2Only φ19.1 is changed to 1/2H material while the previous material is "O".

As for the charge mouthpiece and packing, 1/2UNF20 is necessary for mouthpiece size of charge hose. „ Copper tube material and thickness

Pipe size φ6.4 φ9.5 φ12.7 φ15.9 φ19.1 φ22.2 φ25.4 φ28.6 φ31.8 φ38.1 φ44.5

Material O O O O O 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H

Ve-up R-407C Thickness t (mm) 0.8 0.8 0.8 1.0 1.0 1.0 1.0 1.0 1.2 1.4 1.6

Material O O O O 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H 1/2H

Ve-up11 R-410A Thickness t (mm) 0.8 0.8 0.8 1.0 1.0 1.0 1.0 1.0 1.1 1.4 1.6

* O: Soft (Annealed) H: Hard (Drawn)

Precautions for New Refrigerant (R-410A)

415

Precautions for New Refrigerant (R-410A)

Si37-701

1. Flaring tool

Flare gauge

„ Specifications 2 Dimension A

Unit:mm Nominal size

A +0−0.4

Tube O.D. Do

Class-2 (R-410A)

Class-1 (Conventional)

1/4

6.35

9.1

9.0

3/8

9.52

13.2

13.0

1/2

12.70

16.6

16.2

5/8

15.88

19.7

19.4

3/4

19.05

24.0

23.3

„ Differences 2 Change of dimension A Dimension A

For class-1: R-407C For class-2: R-410A

Conventional flaring tools can be used when the work process is changed. (change of work process) Previously, a pipe extension margin of 0 to 0.5mm was provided for flaring. For R-410A air conditioners, perform pipe flaring with a pipe extension margin of 1.0 to 1.5mm. (For clutch type only) Conventional tool with pipe extension margin adjustment can be used.

416

Precautions for New Refrigerant (R-410A)

Si37-701

Precautions for New Refrigerant (R-410A)

2. Torque wrench

„ Specifications 2 Dimension B Nominal size 1/2 5/8

Unit:mm Class-1 24 27

Class-2 26 29

Previous 24 27

No change in tightening torque No change in pipes of other sizes „ Differences 2 Change of dimension B Only 1/2", 5/8" are extended

For class-1: R-407C For class-2: R-410A

Dimension B

3. Vacuum pump with check valve Vacuum pump adapter Reverse flow preventive vacuum adapter

„ Specifications 2 Discharge speed 50 l/min (50Hz) 60 l/min (60Hz) 2 Suction port UNF7/16-20(1/4 Flare) UNF1/2-20(5/16 Flare) with adapter

z Maximum degree of vacuum

Select a vacuum pump which is able to keep the vacuum degree of the system in excess of –100.7 kPa (5 torr – 755 mmHg).

„ Differences 2 Equipped with function to prevent reverse oil flow 2 Previous vacuum pump can be used by installing adapter.

Precautions for New Refrigerant (R-410A)

417

Precautions for New Refrigerant (R-410A)

Si37-701

4. Leak tester

„ Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. „ Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen.

5. Refrigerant oil (Air compal)

„ Specifications 2 Contains synthetic oil, therefore it can be used for piping work of every refrigerant cycle. 2 Offers high rust resistance and stability over long period of time. „ Differences 2 Can be used for R-410A and R-22 units.

6. Gauge manifold for R-410A

„ Specifications 2 High pressure gauge - 0.1 to 5.3 MPa (-76 cmHg to 53 kg/cm2) 2 Low pressure gauge - 0.1 to 3.8 MPa (-76 cmHg to 38 kg/cm2) 2 1/4" → 5/16" (2min → 2.5min) 2 No oil is used in pressure test of gauges. → For prevention of contamination 418

Precautions for New Refrigerant (R-410A)

Si37-701

Precautions for New Refrigerant (R-410A)

2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. „ Differences 2 Change in pressure 2 Change in service port diameter

7. Charge hose for R-410A

(Hose with ball valve)

„ Specifications 2 Working pressure 5.08 MPa (51.8 kg/cm2) 2 Rupture pressure 25.4 MPa (259 kg/cm2) 2 Available with and without hand-operate valve that prevents refrigerant from outflow. „ Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance

8. Charging cylinder

Can not be used

„ Specifications 2 Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder. „ Differences 2 The cylinder can not be used for mixed refrigerant since mixing ratio is changed during charging.

When R-410A is charged in liquid state using charging cylinder, foaming phenomenon is generated inside charging cylinder.

Precautions for New Refrigerant (R-410A)

419

Precautions for New Refrigerant (R-410A)

Si37-701

9. Weigher for refrigerant charge

„ Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging. 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories. „ Differences 2 Measurement is based on weight to prevent change of mixing ratio during charging.

10.Charge mouthpiece

„ Specifications 2 For R-410A, 1/4"→ 5/16" (2min → 2.5min) 2 Material is changed from CR to H-NBR. „ Differences 2 Change of thread specification on hose connection side (For the R-410A use) 2 Change of sealer material for the HFCs use.

420

Precautions for New Refrigerant (R-410A)

Si37-701

Index A A0 .........................................................................230 A1 .........................................................................231 A3 .........................................................................232 A6 .........................................................................234 A7 .........................................................................235 A9 .................................................................237, 239 Abnormal Discharge Pipe Temperature ...............260 Abnormal Outdoor Fan Motor Signal ...................265 About Refrigerant R-410A ....................................412 Actuation of High Pressure Switch .......................248 Actuation of Low Pressure Sensor .......................250 Address Duplication of Centralized Controller .....319 Address Duplication, Improper Setting .................330 AF .........................................................................241 AJ .........................................................................242 Applicable range of Field setting ..........................174 Auto Restart after Power Failure Reset ...............176

B Backup Operation ................................................132 Basic Control ..........................................................99

C C4 .........................................................................243 C5 .........................................................................244 C9 .........................................................................245 Centralized Control Group No. Setting .................180 Check Operation not Executed ............................303 CJ .........................................................................246 Compressor PI Control .........................................100 Contents of Control Modes ..................................181 Current Sensor Malfunction .................................268

D Defective Inverter PC Board ................................280 Defrost Operation .................................................118 Demand Operation ...............................................132 Detailed Explanation of Setting Modes ................175 Discharge Pipe Protection Control .......................128 Display “Under Centralized Control” Blinks (Repeats Double Blink) .................................336 Display “Under Centralized Control” Blinks (Repeats Single Blink) ..................................333 Drain Level above Limit ........................................241 Drain Pump Control ..............................................138

E E1 E3 E4 E5 E6 E7 E9

.........................................................................247 .........................................................................248 .........................................................................250 .........................................................................252 .........................................................................254 .........................................................................255 .........................................................................258

Index

Electronic Expansion Valve Malfunction / Dust Clogging ....................................................... 237 Electronic Expansion Valve PI Control ................ 108 Error of External Protection Device ..................... 230

F F3 ........................................................................ 260 F6 ........................................................................ 262 Fan Motor (M1F) Lock, Overload ........................ 234 Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board ............. 296 Field Setting ........................................................ 170 Field Setting from Outdoor Unit ........................... 183 List of Field Setting Items ............................. 183 Setting by push button switches ................... 189 Field Setting from Remote Controller .................. 170 Filter Sign Setting ................................................ 175 Freeze Prevention ............................................... 140 Functional Parts Layout ........................................ 62 REMQ10P, 12P .............................................. 65 REMQ14P, 16P .............................................. 66 REYQ14P, 16P ............................................... 63 REYQ8P, 10P, 12P ........................................ 62

G Gas Shortage Alert .............................................. 297

H H7 ........................................................................ 265 H9 ........................................................................ 267 Heating Operation Prohibition ............................. 132 High Pressure Protection Control ........................ 124

I Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller ............. 316 Improper Combination of Optional Controllers for Centralized Control ...................................... 328 Inverter Compressor Motor Lock ......................... 252 Inverter Compressor Starting Failure .................. 287 Inverter Over-Ripple Protection ........................... 293 Inverter Protection Control .................................. 129

J J2 J3 J4 J5 J6 J7 J9 JA JC

........................................................................ 268 ........................................................................ 269 ........................................................................ 270 ........................................................................ 271 ........................................................................ 272 ........................................................................ 273 ........................................................................ 275 ........................................................................ 276 ........................................................................ 278

i

Si37-701

L L1 .........................................................................280 L4 .........................................................................281 L5 .........................................................................283 L8 .........................................................................285 L9 .........................................................................287 LC .........................................................................290 List of Electrical and Functional Parts ..................385 Indoor Unit .....................................................390 Outdoor Unit ..................................................385 Louver Control for Preventing Ceiling Dirt ............145 Low Pressure Protection Control .........................126

M M1 ........................................................................326 M8 ........................................................................327 MA ........................................................................328 Malfunction code indication by outdoor unit PC board .......................................................226 Malfunction of Capacity Determination Device ...........................................................242 Malfunction of Discharge Pipe Thermistor (R31, 32T, 33T) .............................................269 Malfunction of Drain Level Control System (S1L) .............................................................232 Malfunction of Electronic Expansion Valve Coil ......................................................239 Malfunction of High Pressure Sensor ...................276 Malfunction of Inverter Radiating Fin Temperature Rise ...............................................................281 Malfunction of Inverter Radiating Fin Temperature Rise Sensor ..................................................294 Malfunction of Liquid Pipe Thermistor 1 (R6T) (R9T) or (R14T) ..................................273 Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) ...............................................274 Malfunction of Low Pressure Sensor ...................278 Malfunction of Moving Part of Electronic Expansion Valve (Y1E~Y5E) ..........................................258 Malfunction of Outdoor Unit Fan Motor ................255 Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) .............................275 Malfunction of Swing Flap Motor (M1S) ...............235 Malfunction of System, Refrigerant System Address Undefined ......................................................324 Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T) .....................270 Malfunction of Thermistor (R1T) for Suction Air ...245 Malfunction of Thermistor (R2T) for Heat Exchanger ............................................243 Malfunction of Thermistor (R3T) for Gas Pipes .....................................................244 Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger .....................................272 Malfunction of Thermistor (R8T or R10T) for Suction Pipe ..................................................271 Malfunction of Thermostat Sensor in Remote Controller ......................................................246 Malfunction of Transmission between Centralized Controller and Indoor Unit .............................320

ii

Malfunction of Transmission between Indoor and Outdoor Units in the Same System .............. 315 Malfunction of Transmission between Indoor Units .................................................. 304 Malfunction of Transmission between Inverter and Control PC Board ......................................... 290 Malfunction of Transmission between Main and Sub Remote Controllers ............................... 314 Malfunction of Transmission between Optional Controllers for Centralized Control ............... 327 Malfunction of Transmission between Remote Controller and Indoor Unit ............................ 307 MC ....................................................................... 330 Method of Checking The Inverter’s Power Transistors and Diode Modules ...................................... 408 Momentary Overcurrent of Inverter Compressor ............................ 283, 285

O Oil Return Operation ........................................... 114 Operation Lamp Blinks ........................................ 331 Operation Mode .................................................... 98 Operation When Power is Turned On ................. 168 Option List ........................................................... 396 Other Control ....................................................... 132 Outdoor Unit Fan Control in Cooling Operation .. 109 Outdoor Unit PC Board Layout ........................... 169 Outdoor Unit Thermistors for Discharge Pipe ..... 406

P P1 ........................................................................ 293 P4 ........................................................................ 294 PC Board Defect ................................. 231, 247, 326 Piping Installation Point ....................................... 399 The Example of a Wrong Pattern ................. 400 PJ ........................................................................ 296 Power Supply Insufficient or Instantaneous Failure ................................... 300 Precautions for New Refrigerant (R-410A) .......... 412 Pressure Sensor ................................................. 407 Procedure and Outline ........................................ 149 Protection Control ............................................... 124 Pump-down Residual Operation ......................... 120

R Refrigerant Circuit ................................................. 50 REYQ14P, 16P ............................................... 52 REYQ8P, 10P, 12P ........................................ 50 Refrigerant Cylinders .......................................... 414 Refrigerant Flow for Each Operation Mode ........... 67 REYQ14P, 16P ............................................... 75 REYQ8P, 10P, 12P ........................................ 67 Refrigerant Overcharged ..................................... 262 Restart Standby .................................................. 122 Reverse Phase, Open Phase .............................. 299

S Service Tools ...................................................... 415 Setting by pushbutton switches ........................... 189 Setting Contents and Code No. .......................... 173

Index

Si37-701

Setting of Low Noise Operation and Demand Operation ......................................................199 Special Control .....................................................111 Specifications .........................................................10 BS Units ...........................................................47 Indoor Units .....................................................21 Outdoor Units ..................................................10 Standby ................................................................122 Startup Control .....................................................111 STD Compressor Motor Overcurrent/Lock ...........254 STD Compressor Overload Protection .................131 Step Control of Outdoor Unit Fans .......................108 Stopping Operation ..............................................123 Symptom-based Troubleshooting ........................212 System is not Set yet ...........................................323

T Test Operation .....................................................148 Procedure and Outline ...................................149 The Example of a Wrong Pattern .........................400 Thermistor Resistance / Temperature Characteristics .........................405 Thermostat Sensor in Remote Controller .............135 Transmission Failure (Across Outdoor Units) ......308 Troubleshooting (OP: Central Remote Controller) ...................326 Troubleshooting (OP: Unified ON/OFF Controller) ..................331

U U0 .........................................................................297 U1 .........................................................................299 U2 .........................................................................300 U3 .........................................................................303 U4 .........................................................................304 U5 .........................................................................307 U7 .........................................................................308 U8 .........................................................................314 U9 .........................................................................315 UA ........................................................................316 UC ........................................................................319 UE ........................................................................320 UF ........................................................................323 UH ........................................................................324

Index

iii

Si37-701

iv

Index

Si37-701

Drawings & Flow Charts A

G

Abnormal Discharge Pipe Temperature ...............260 Abnormal Outdoor Fan Motor Signal ...................265 Actuation of High Pressure Switch .......................248 Actuation of Low Pressure Sensor .......................250 Address Duplication of Centralized Controller .....319 Address Duplication, Improper Setting .................330

Gas Shortage Alert .............................................. 297

C Centralized Control Group No. Setting .................180 BRC1C Type .................................................180 BRC4C Type .................................................180 BRC7C Type .................................................180 BRC7E Type ..................................................180 Group No. Setting Example ...........................181 Check 2 ................................................................337 Check Operation not Executed ............................303 Contents of Control Modes ..................................181 How to Select Operation Mode ......................182 Current Sensor Malfunction .................................268

D Defective Inverter PC Board ................................280 Display “Under Centralized Control” Blinks (Repeats Double Blink) .................................336 Display “Under Centralized Control” Blinks (Repeats Single Blink) ..................................333 Display of sensor and address data .....................222 Drain Level above Limit .......................................241 Drain Pump Control .............................................138 When the Float Switch is Tripped and “AF” is Displayed on the Remote Controller ..........................................139 When the Float Switch is Tripped During Heating Operation ..........................................139 When the Float Switch is Tripped while the Cooling Thermostat is OFF ...............138 When the Float Switch is Tripped While the Cooling Thermostat is ON ................138

E Electronic Expansion Valve Malfunction / Dust Clogging ........................................................237 Error of External Protection Device ......................230 Example of Connection (R-410A Type) ...............401

F Fan Motor (M1F) Lock, Overload .........................234 Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board ..................296 Field Setting from Outdoor Unit ...........................183 Mode changing procedure .................... 189, 190 Setting by dip switches ..................................185 Freeze Prevention ................................................140 Functional Parts Layout .........................................62 Drawings & Flow Charts

I Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller ............ 316 Improper Combination of Optional Controllers for Centralized Control ...................................... 328 Inspection Mode .................................................. 220 Inverter Compressor Motor Lock ......................... 252 Inverter Compressor Starting Failure .................. 287 Inverter Over-Ripple Protection ........................... 293

L Louver Control for Preventing Ceiling Dirt ........... 145

M Malfunction of Capacity Determination Device ... 242 Malfunction of Discharge Pipe Thermistor (R31, 32T, 33T) ............................................ 269 Malfunction of Drain Level Control System (S1L) ............................................................ 232 Malfunction of Electronic Expansion Valve Coil ..................................................... 239 Malfunction of High Pressure Sensor .................. 276 Malfunction of Inverter Radiating Fin Temperature Rise .............................................................. 281 Malfunction of Inverter Radiating Fin Temperature Rise Sensor ................................................. 294 Malfunction of Liquid Pipe Thermistor 1 (R6T) (R9T) or (R14T) ................................. 273 Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) .............................................. 274 Malfunction of Low Pressure Sensor .................. 278 Malfunction of Moving Part of Electronic Expansion Valve (Y1E~ Y5E) ........................................ 258 Malfunction of Outdoor Unit Fan Motor ............... 255 Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) ............................ 275 Malfunction of Swing Flap Motor (M1S) .............. 235 Malfunction of System, Refrigerant System Address Undefined ..................................................... 324 Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T) .................... 270 Malfunction of Thermistor (R1T) for Outdoor Air ................................................... 267 Malfunction of Thermistor (R1T) for Suction Air .................................................... 245 Malfunction of Thermistor (R2T) for Heat Exchanger ........................................... 243 Malfunction of Thermistor (R3T) for Gas Pipes ... 244 Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger ...................... 272 Malfunction of Thermistor (R8T or R10T) for Suction Pipe ................................................. 271 v

Si37-701

Malfunction of Thermostat Sensor in Remote Controller ......................................................246 Malfunction of Transmission between Centralized Controller and Indoor Unit .............................320 Malfunction of Transmission between Indoor and Outdoor Units in the Same System ...............315 Malfunction of Transmission between Indoor Units ...................................................304 Malfunction of Transmission between Inverter and Control PC Board ..........................................290 Malfunction of Transmission between Main and Sub Remote Controllers ................................314 Malfunction of Transmission between Optional Controllers for Centralized Control ................327 Malfunction of Transmission between Remote Controller and Indoor Unit .............................307 Method of Checking the Inverter’s Power Transistors and Diode Modules .......................................408 Momentary Overcurrent of Inverter Compressor ............................ 283, 285

O Operation Lamp Blinks .........................................331 Outdoor Unit PC Board Layout ............................169

T Test Operation .................................................... 148 Thermostat Sensor in Remote Controller ............ 135 Cooling .......................................................... 135 Heating ......................................................... 136 Torque wrench .................................................... 417 Transmission Failure (Across Outdoor Units) ..... 308 Troubleshooting (OP: Central Remote Controller) .................. 326 Troubleshooting (OP: Unified ON/OFF Controller) ................. 331 Troubleshooting by Remote Controller ............... 215

W Weigher for refrigerant charge ............................ 420 Wired Remote Controller ..................................... 170 Wireless Remote Controller - Indoor Unit ........... 171 BRC4C type .................................................. 171 BRC7C type .................................................. 171 BRC7E type .................................................. 171 Wiring Diagrams for Reference ........................... 361 Field Wiring ................................................... 366 Indoor Unit .................................................... 369 Outdoor Unit ................................................. 361

P PC Board Defect ................................. 231, 247, 326 Piping Diagrams ...................................................352 Indoor Unit .....................................................357 Outdoor Unit ..................................................352 Piping Installation Point ........................................399 The Example of A Wrong Pattern ..................400 Power Supply Insufficient or Instantaneous Failure ...................................300 Pressure Sensor ..................................................407

R Refrigerant Flow for Each Operation Mode ............67 Refrigerant Overcharged .....................................262 Remote Controller Self-Diagnosis Function .........223 Remote Controller Service Mode .........................221 REMQ10P, 12P .....................................................65 REMQ14P, 16P .....................................................66 Reverse Phase, Open Phase ..............................299 REYQ14P, 16P ......................................................63 REYQ8P, 10P, 12P ................................................62

S Self-diagnosis by Wired Remote Controller .........216 Self-diagnosis by Wireless Remote Controller .....217 Setting of Low Noise Operation and Demand Operation ......................................................199 Image of operation in the case of A ...... 200, 202 Image of operation in the case of A and B .................................... 200, 202 Image of operation in the case of B ...... 200, 202 Simplified Remote Controller ...............................172 BRC2A51, BRC2C51 ....................................172 STD Compressor Motor Overcurrent/Lock ...........254 System is not Set yet ...........................................323

vi

Drawings & Flow Charts

http://www.daikin.com/global_ac/

Specifications, designs and other content appearing in this brochure are current as of August 2007 but subject to change without notice.

Si37-701 Printed in Japan 08/2007 AK