Daikin REYQ72-456XATJU Service Manual Download

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Check

SiUS371901E

375

Service Diagnosis

4.2

Low Pressure Check

Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points.

Notes:

∗

1. For details of compressor capacity control while in cooling.

∗

2. The low pressure protection control includes low pressure protection control and hot gas

bypass control.

∗

3. In cooling, the indoor unit electronic expansion valve is used for superheating degree control.

∗

4. In heating, the outdoor unit electronic expansion valve (main) is used for superheating degree

control of outdoor heat exchanger.

CHECK 2

Abnormal drop in

low pressure

(Low evaporating

temperature)

[In cooling]

(

∗

1.)

Defective
low pressure
control

Defective
compressor
capacity
control

Defective low pressure

sensor

Defective outdoor unit
main PCB

Defective
low pressure
protection
control

Defective low pressure
sensor

Defective hot gas
solenoid valve

[In both cooling
and heating]
(

∗

2.)

[In cooling]
If the indoor unit
electronic
expansion valve is
excessively
throttled: (

∗

3.)

Defective indoor
unit electronic
expansion valve

Defective valve coil

Defective valve body

Defective
control

Defective gas pipe
thermistor of indoor unit

Defective liquid pipe
thermistor of indoor unit

Defective outdoor
unit electronic
expansion valve

Defective valve coil

Defective valve body

[In heating]
If the outdoor unit
electronic
expansion valve
is excessively
throttled:
(

∗

4.)

Defective
control

Defective low pressure
sensor
Defective suction pipe
thermistor

[In cooling]

Low suction air
temperature of
the evaporator

[In heating]

Low suction air
temperature of
indoor unit

Short circuit

Low room temperature

Defective suction air thermistor of indoor unit

Low suction air temperature of outdoor unit

Defective outdoor air temperature thermistor of outdoor unit

High pipe
resistance

Abnormal piping length

Bent or crashed pipe

Clogging of foreign materials

Stop valve closed

Less
circulation
quantity of
refrigerant

Degradation
in evaporating
capacity

Refrigerant shortage

Moisture choke

Dirty

evaporator

Decreased
airflow rate

Decreased
fan output

Defective fan motor

←

Can the fan motor be rotated with hands?

Are the motor coil resistance and insulation normal?

←

If a spare PCB is mounted, is the

capacity setting properly made?

←

Is the air filter clogged?

←

Is there any obstacle in the airflow passage?

Defective outdoor unit main
PCB (Including capacity setting)

High
airflow
passage
resistance

Dirty filter

Obstacle

Defective electronic
expansion valve
control

←

Is the pressure value checked with the Service Checker

corresponding to the measurement value of the pressure sensor?

←

Are the voltage characteristics normal?

←

Is the pressure value checked with the Service Checker

corresponding to the measurement value of the pressure sensor?

←

Are the coil resistance and insulation normal?

←

Are the voltage characteristics normal?

←

Are the coil resistance and insulation normal?

←

Check for the thermistor resistance and connection.

←

Check for the thermistor resistance and connection.

←

Are the voltage characteristics normal?

←

Are the coil resistance and insulation normal?

←

Is the pressure value checked with the Service Checker
corresponding to the measurement value of the pressure sensor?

←

Check for the thermistor resistance and connection.

←

Is the suction air temperature more than 14˚C (57.2˚F)?

←

Is the room temperature less than 14˚C (57.2˚F)?

←

Is the connector properly connected?

Are the thermistor resistance characteristics normal?

←

Is the outdoor air temperature more than –20˚C (–4˚F)?

←

Is the connector properly connected?

Are the thermistor resistance characteristics normal?

←

Does the piping length fall in the permissible range?

←

Conduct visual checks for pipe conditions.

←

Is there any temperature difference caused before

and after the filter or branch pipe?

←

Check if the stop valve is open.

←

Refer to

CHECK 7

←

Eliminate moisture by vacuum operation. (Refer to

CHECK 8

)

←

Is the heat exchanger clogged?

Summary of Contents for REYQ72-456XATJU

Page 1: ...Service Manual SiUS371901E REYQ72 456XATJU REYQ72 456XAYDU REYQ72 432XAYCU Heat Recovery 60 Hz ...

Page 2: ...l Appearance 5 2 1 Indoor Unit 5 2 2 Outdoor Unit 6 2 3 Air Treatment Equipment 7 2 4 Branch Selector Unit 7 3 Combination of Outdoor Units 8 3 1 REYQ XATJU REYQ XAYDU REYQ XAYCU 8 4 Capacity Range 9 4 1 Connection Ratio 9 4 2 Outdoor Unit Combinations 9 4 3 Limitation of Capacity Index for Heat Recovery 10 5 Specifications 11 5 1 REYQ XATJU 11 5 2 REYQ XAYDU 28 5 3 REYQ XAYCU 45 Part 2 Refrigeran...

Page 3: ...3 90 3 2 When Wireless Remote Controller is Used Together 91 4 Address Setting for Wireless Remote Controller 92 5 Centralized Control Group No Setting 94 5 1 BRC1E73 94 5 2 Wireless Remote Controller 96 5 3 Group No Setting Example 97 6 Service Settings Menu Maintenance Menu 98 6 1 BRC1E73 98 Part 4 Functions and Control 102 1 Function General 104 1 1 Outdoor Unit 104 1 2 Branch Selector Unit Ind...

Page 4: ...ontrol Temperature 138 9 3 Remote Controller Thermistor 140 9 4 Thermostat Control 142 9 5 Drain Pump Control 145 9 6 Control of Electronic Expansion Valve 147 9 7 Freeze Up Prevention 148 9 8 List of Swing Flap Operations 150 9 9 Hot Start Control In Heating Only 151 9 10 Louver Control for Preventing Ceiling Dirt 152 9 11 Heater Control Except FXTQ TA Models 153 9 12 Heater Control FXTQ TA Model...

Page 5: ...3 Troubleshooting by Error Code 236 3 1 Error Codes and Descriptions 236 3 2 Error Codes Sub Codes 238 3 3 External Protection Device Abnormality 251 3 4 Indoor Unit Control PCB Abnormality 253 3 5 Drain Level Control System Abnormality 254 3 6 Indoor Fan Motor Lock Overload 256 3 7 Indoor Fan Motor Abnormality 258 3 8 Overload Overcurrent Lock of Indoor Fan Motor 262 3 9 Blower Motor Not Running ...

Page 6: ...rmality 312 3 45 Outdoor Fan PCB Abnormality 313 3 46 Thermistor Abnormality 314 3 47 High Pressure Sensor Abnormality 316 3 48 Low Pressure Sensor Abnormality 317 3 49 Inverter PCB Abnormality 318 3 50 Momentary Power Failure during Test Operation 320 3 51 Reactor Temperature Rise Abnormality 321 3 52 Inverter Radiation Fin Temperature Rise Abnormality 322 3 53 Compressor Instantaneous Overcurren...

Page 7: ...e Initial Setting for Communication Completes 372 3 78 Climate Talk Communication System Combination Error After Initial Setting for Communication Completes 373 4 Check 374 4 1 High Pressure Check 374 4 2 Low Pressure Check 375 4 3 Superheat Operation Check 376 4 4 Power Transistor Check 377 4 5 Refrigerant Overcharge Check 382 4 6 Refrigerant Shortage Check 383 4 7 Vacuuming and Dehydration Proce...

Page 8: ...on is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers This manual is for the person in charge of maintenance and inspection Warning Do not store the equipment in a room with fire sources e g naked flames gas appliances electric heaters Be sure to disconnect the power cable from the socket before disassembling equipment for repair Working on equipm...

Page 9: ...or exclusive use with the R 410A refrigerant The use of materials for other refrigerant models may cause a serious accident such as damage to the refrigerant cycle or equipment failure Do not mix air or gas other than the specified refrigerant R 410A in the refrigerant system If air enters the refrigerating system excessively high pressure results causing equipment damage and injury Warning Cautio...

Page 10: ...riate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and lead wires are scratched or have deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extensi...

Page 11: ...refrigerant gas leaks be sure to locate the leakage and repair it before charging the refrigerant After charging the refrigerant make sure that there is no leakage If the leakage cannot be located and the repair work must be stopped be sure to pump down and close the service valve to prevent refrigerant gas from leaking into the room Refrigerant gas itself is harmless but it may generate toxic gas...

Page 12: ...t generation fire or an electrical shock If the installation platform or frame has corroded replace it A corroded installation platform or frame may cause the unit to fall resulting in injury Check the earth grounding and repair it if the equipment is not properly earthed grounded Improper earth grounding may cause an electrical shock Be sure to measure insulation resistance after the repair and m...

Page 13: ...ution is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or has to restart part of a procedure Note Note A Note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Reference A Reference guides the reader to other places in this binder or in this manual ...

Page 14: ...l Appearance 5 2 1 Indoor Unit 5 2 2 Outdoor Unit 6 2 3 Air Treatment Equipment 7 2 4 Branch Selector Unit 7 3 Combination of Outdoor Units 8 3 1 REYQ XATJU REYQ XAYDU REYQ XAYCU 8 4 Capacity Range 9 4 1 Connection Ratio 9 4 2 Outdoor Unit Combinations 9 4 3 Limitation of Capacity Index for Heat Recovery 10 5 Specifications 11 5 1 REYQ XATJU 11 5 2 REYQ XAYDU 28 5 3 REYQ XAYCU 45 ...

Page 15: ...6P One way blow cassette type FXEQ 07P 09P 12P 15P 18P 24P Slim ceiling mounted duct type FXDQ 07M 09M 12M 18M 24M MSP concealed ducted type FXSQ 05TA 07TA 09TA 12TA 15TA 18TA 24TA 30TA 36TA 48TA 54TA Ceiling mounted duct type Middle and high static pressure FXMQ 07PB 09PB 12PB 15PB 18PB 24PB 30PB 36PB 48PB 54PB Ceiling mounted duct type FXMQ 72M 96M Ceiling suspended type FXHQ 12M 24M 36M Wall mo...

Page 16: ...456XA TJU Capacity range ton 6 8 10 12 14 16 Power supply Standard Capacity index 72 96 120 144 168 192 Heat recovery REYQ 72XA 96XA 120XA 144XA 168XA 192XA YDU Capacity range ton 18 20 22 24 26 28 Power supply Standard Capacity index 216 240 264 288 312 336 Heat recovery REYQ 216XA 240XA 264XA 288XA 312XA 336XA YDU Capacity range ton 30 32 34 36 38 Power supply Standard Capacity index 360 384 408...

Page 17: ...angeability with BSVQ36 60 96PVJU VJ 1 phase 208 230 V 60 Hz Multi Branch Selector Unit Note No interchangeability with BSV4 6Q36PVJU VJ 1 phase 208 230 V 60 Hz Series Model name Power supply Standard FXMQ 48MF 72MF 96MF VJU Series Model name Power supply Standard VAM 300G 470G 600G 1200G VJU Series Model name Power supply Standard Heat recovery BSQ 36T 60T 96T VJ Series Model name Power supply St...

Page 18: ...sette type FXZQ TA Shown with BYFQ60C3W1W Ceiling suspended type FXHQ M 4 way blow ceiling suspended type FXUQ P Wall mounted type FXAQ P One way blow cassette type FXEQ P Floor standing type FXLQ M Slim ceiling mounted duct type FXDQ M Concealed floor standing type FXNQ M MSP concealed ducted type FXSQ TA Air handling unit FXTQ TA Ceiling mounted duct type Middle and high static pressure FXMQ PB ...

Page 19: ...oor Unit Triple Outdoor Unit REYQ72 96 120 144 168XATJU REYQ72 96 120 144 168XAYDU REYQ72 96 120 144 168XAYCU REYQ192 216 240 264 288 312 336XATJU REYQ192 216 240 264 288 312 336XAYDU REYQ192 216 240 264 288 312 336XAYCU REYQ360 384 408 432 456XATJU REYQ360 384 408 432 456XAYDU REYQ360 384 408 432XAYCU ...

Page 20: ...901E 7 General Information 2 3 Air Treatment Equipment 2 4 Branch Selector Unit Outdoor air processing unit FXMQ MF Energy recovery ventilator VAM series VAM G Single branch selector unit BSQ T Multi branch selector unit BS Q54T ...

Page 21: ...n the outdoor unit multi connection piping kit separately sold is required 2 Except REYQ XAYCU Systemcapacity Ton Number of units Module Outdoor unit multi connection piping kit 1 72 96 120 144 168 6 1 O 8 1 O 10 1 O 12 1 O 14 1 O 16 2 OO BHFP26P100U 18 2 O O 20 2 OO 22 2 O O 24 2 OO 26 2 O O 28 2 OO 30 3 OOO BHFP26P151U 32 3 OO O 34 3 O OO 36 3 OOO 38 2 3 OO O ...

Page 22: ...tion ratio Max connection ratio Types of connected indoor units Type of connected air treatment equipments When using only FXDQ M FXSQ07 54TA FXMQ PB FXAQ P When using at least one FXFQ07 09T FXZQ05TA FXSQ05TA Other indoor unit models FXMQ MF When FXMQ MF is only connected When FXMQ MF and indoor units are connected Single outdoor units 50 1 200 2 180 2 200 2 100 100 3 Double outdoor units 160 2 1...

Page 23: ...ber of connectable indoor units per branch 5 5 5 5 5 Number of branches 4 6 8 10 12 Maximum capacity index of connectable indoor units 144 or less 216 or less 290 or less 290 or less 290 or less Maximum capacity index of connectable indoor units per branch 1 54 or less 54 or less 54 or less 54 or less 54 or less Suction gas piping Liquid piping Indoor unit Heating Indoor unit Cooling Indoor unit C...

Page 24: ... Volume m3 h 12 7 Number of revolutions r min 3 738 Motor output Number of units kW 3 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 Airflow rate cfm m3 min 7 283 206 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ3 4 19 1 C1220T Brazing connection High Low pressure gas pipe in mm φ5 8 15 9 C1220T Brazin...

Page 25: ... 4 Number of revolutions r min 5 142 Motor output Number of units kW 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ7 8 22 2 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection We...

Page 26: ...4 Number of revolutions r min 6 888 Motor output Number of units kW 7 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection ...

Page 27: ... 7 Number of revolutions r min 5 214 Motor output Number of units kW 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection...

Page 28: ... 6 Number of revolutions r min 6 330 Motor output Number of units kW 9 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection...

Page 29: ...aled scroll type Volume m3 h 17 7 17 7 Number of revolutions r min 5 214 5 214 Motor output Number of units kW 5 4 1 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low...

Page 30: ...aled scroll type Volume m3 h 20 3 20 3 Number of revolutions r min 5 994 5 994 Motor output Number of units kW 6 2 1 6 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low...

Page 31: ...aled scroll type Volume m3 h 22 7 22 7 Number of revolutions r min 6 702 6 702 Motor output Number of units kW 7 0 1 7 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low...

Page 32: ...ealed scroll type Volume m3 h 22 0 27 7 Number of revolutions r min 6 504 5 214 Motor output Number of units kW 6 8 1 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 7 989 9 480 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Lo...

Page 33: ...aled scroll type Volume m3 h 25 4 25 4 Number of revolutions r min 4 794 4 794 Motor output Number of units kW 7 3 1 7 3 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low...

Page 34: ...ealed scroll type Volume m3 h 28 0 28 0 Number of revolutions r min 5 286 5 286 Motor output Number of units kW 8 1 1 8 1 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Lo...

Page 35: ...ealed scroll type Volume m3 h 30 0 30 0 Number of revolutions r min 5 664 5 664 Motor output Number of units kW 8 7 1 8 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Lo...

Page 36: ...ally sealed scroll type Volume m3 h 22 4 22 4 22 4 Number of revolutions r min 6 606 6 606 6 606 Motor output Number of units kW 6 9 1 6 9 1 6 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 3 Airflow rate cfm m3 min 7 989 7 989 7 989 226 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 ...

Page 37: ...lly sealed scroll type Volume m3 h 21 8 21 8 26 9 Number of revolutions r min 6 426 6 426 5 070 Motor output Number of units kW 6 7 1 6 7 1 7 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 3 Airflow rate cfm m3 min 7 989 7 989 9 480 226 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C...

Page 38: ...ly sealed scroll type Volume m3 h 20 9 23 7 23 7 Number of revolutions r min 6 162 4 470 4 470 Motor output Number of units kW 6 4 1 6 8 1 6 8 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 3 Airflow rate cfm m3 min 7 989 9 480 9 480 226 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C1...

Page 39: ...ally sealed scroll type Volume m3 h 23 1 23 1 23 1 Number of revolutions r min 4 350 4 350 4 350 Motor output Number of units kW 6 6 1 6 6 1 6 6 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 3 Airflow rate cfm m3 min 9 480 9 480 9 480 268 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 ...

Page 40: ...lly sealed scroll type Volume m3 h 23 7 23 7 23 7 Number of revolutions r min 4 470 4 470 4 470 Motor output Number of units kW 6 8 1 6 8 1 6 8 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 8 2 3 Airflow rate cfm m3 min 9 480 9 480 9 480 268 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C...

Page 41: ... h 12 7 Number of revolutions r min 3 738 Motor output Number of units kW 3 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 Airflow rate cfm m3 min 7 283 206 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ3 4 19 1 C1220T Brazing connection High Low pressure gas pipe in mm φ5 8 15 9 C1220T Brazing connecti...

Page 42: ... Number of revolutions r min 5 142 Motor output Number of units kW 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ7 8 22 2 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection Weig...

Page 43: ...Number of revolutions r min 6 888 Motor output Number of units kW 7 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection We...

Page 44: ... Number of revolutions r min 5 214 Motor output Number of units kW 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection W...

Page 45: ... Number of revolutions r min 6 330 Motor output Number of units kW 9 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection W...

Page 46: ...ed scroll type Volume m3 h 17 7 17 7 Number of revolutions r min 5 214 5 214 Motor output Number of units kW 5 4 1 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low p...

Page 47: ...ed scroll type Volume m3 h 20 3 20 3 Number of revolutions r min 5 994 5 994 Motor output Number of units kW 6 2 1 6 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low p...

Page 48: ...ed scroll type Volume m3 h 22 7 22 7 Number of revolutions r min 6 702 6 702 Motor output Number of units kW 7 0 1 7 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low p...

Page 49: ...led scroll type Volume m3 h 22 0 27 7 Number of revolutions r min 6 504 5 214 Motor output Number of units kW 6 8 1 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 7 989 9 480 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 50: ...ed scroll type Volume m3 h 25 4 25 4 Number of revolutions r min 4 794 4 794 Motor output Number of units kW 7 3 1 7 3 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low p...

Page 51: ...led scroll type Volume m3 h 28 0 28 0 Number of revolutions r min 5 286 5 286 Motor output Number of units kW 8 1 1 8 1 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 52: ...led scroll type Volume m3 h 30 0 30 0 Number of revolutions r min 5 664 5 664 Motor output Number of units kW 8 7 1 8 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 53: ...ly sealed scroll type Volume m3 h 22 4 22 4 22 4 Number of revolutions r min 6 606 6 606 6 606 Motor output Number of units kW 6 9 1 6 9 1 6 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 3 Airflow rate cfm m3 min 7 989 7 989 7 989 226 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C1...

Page 54: ...y sealed scroll type Volume m3 h 21 8 21 8 26 9 Number of revolutions r min 6 426 6 426 5 070 Motor output Number of units kW 6 7 1 6 7 1 7 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 3 Airflow rate cfm m3 min 7 989 7 989 9 480 226 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C12...

Page 55: ... sealed scroll type Volume m3 h 20 9 23 7 23 7 Number of revolutions r min 6 162 4 470 4 470 Motor output Number of units kW 6 4 1 6 8 1 6 8 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 3 Airflow rate cfm m3 min 7 989 9 480 9 480 226 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C122...

Page 56: ...ly sealed scroll type Volume m3 h 23 1 23 1 23 1 Number of revolutions r min 4 350 4 350 4 350 Motor output Number of units kW 6 6 1 6 6 1 6 6 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 3 Airflow rate cfm m3 min 9 480 9 480 9 480 268 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C1...

Page 57: ...y sealed scroll type Volume m3 h 23 7 23 7 23 7 Number of revolutions r min 4 470 4 470 4 470 Motor output Number of units kW 6 8 1 6 8 1 6 8 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 6 2 3 Airflow rate cfm m3 min 9 480 9 480 9 480 268 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C12...

Page 58: ... h 12 7 Number of revolutions r min 3 738 Motor output Number of units kW 3 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 Airflow rate cfm m3 min 7 283 206 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ3 4 19 1 C1220T Brazing connection High Low pressure gas pipe in mm φ5 8 15 9 C1220T Brazing connecti...

Page 59: ... Number of revolutions r min 5 142 Motor output Number of units kW 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 8 9 5 C1220T Brazing connection Suction gas pipe in mm φ7 8 22 2 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection Weig...

Page 60: ...Number of revolutions r min 6 888 Motor output Number of units kW 7 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 Airflow rate cfm m3 min 7 989 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ3 4 19 1 C1220T Brazing connection We...

Page 61: ... Number of revolutions r min 5 214 Motor output Number of units kW 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ1 2 12 7 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection W...

Page 62: ... Number of revolutions r min 6 330 Motor output Number of units kW 9 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 Airflow rate cfm m3 min 9 480 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low pressure gas pipe in mm φ7 8 22 2 C1220T Brazing connection W...

Page 63: ...ed scroll type Volume m3 h 17 7 17 7 Number of revolutions r min 5 214 5 214 Motor output Number of units kW 5 4 1 5 4 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low p...

Page 64: ...ed scroll type Volume m3 h 20 3 20 3 Number of revolutions r min 5 994 5 994 Motor output Number of units kW 6 2 1 6 2 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 1 8 28 6 C1220T Brazing connection High Low p...

Page 65: ...ed scroll type Volume m3 h 22 7 22 7 Number of revolutions r min 6 702 6 702 Motor output Number of units kW 7 0 1 7 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 7 989 7 989 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ5 8 15 9 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low p...

Page 66: ...led scroll type Volume m3 h 22 0 27 7 Number of revolutions r min 6 504 5 214 Motor output Number of units kW 6 8 1 8 0 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 7 989 9 480 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 67: ...ed scroll type Volume m3 h 25 4 25 4 Number of revolutions r min 4 794 4 794 Motor output Number of units kW 7 3 1 7 3 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low p...

Page 68: ...led scroll type Volume m3 h 28 0 28 0 Number of revolutions r min 5 286 5 286 Motor output Number of units kW 8 1 1 8 1 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 69: ...led scroll type Volume m3 h 30 0 30 0 Number of revolutions r min 5 664 5 664 Motor output Number of units kW 8 7 1 8 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 2 Airflow rate cfm m3 min 9 480 9 480 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 3 8 34 9 C1220T Brazing connection High Low ...

Page 70: ...ly sealed scroll type Volume m3 h 22 4 22 4 22 4 Number of revolutions r min 6 606 6 606 6 606 Motor output Number of units kW 6 9 1 6 9 1 6 9 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 3 Airflow rate cfm m3 min 7 989 7 989 7 989 226 226 226 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C1...

Page 71: ...y sealed scroll type Volume m3 h 21 8 21 8 26 9 Number of revolutions r min 6 426 6 426 5 070 Motor output Number of units kW 6 7 1 6 7 1 7 7 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 3 Airflow rate cfm m3 min 7 989 7 989 9 480 226 226 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C12...

Page 72: ... sealed scroll type Volume m3 h 20 9 23 7 23 7 Number of revolutions r min 6 162 4 470 4 470 Motor output Number of units kW 6 4 1 6 8 1 6 8 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 3 Airflow rate cfm m3 min 7 989 9 480 9 480 226 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C122...

Page 73: ...ly sealed scroll type Volume m3 h 23 1 23 1 23 1 Number of revolutions r min 4 350 4 350 4 350 Motor output Number of units kW 6 6 1 6 6 1 6 6 1 Starting method Soft start Fan Type Propeller fan Motor output kW 0 7 2 3 Airflow rate cfm m3 min 9 480 9 480 9 480 268 268 268 Drive Direct drive Connecting pipes Liquid pipe in mm φ3 4 19 1 C1220T Brazing connection Suction gas pipe in mm φ1 5 8 41 3 C1...

Page 74: ... 1 REYQ72 96 120XATJU REYQ72 96 120XAYDU REYQ72 96 120XAYCU 74 2 2 REYQ144 168XATJU REYQ144 168XAYDU REYQ144 168XAYCU 76 3 Refrigerant Flow for Each Operation Mode 78 3 1 Cooling Operation 78 3 2 Heating Operation 79 3 3 Simultaneous Cooling and Heating Operation 80 3 4 Cooling Oil Return Operation 81 3 5 Defrost Heating Oil Return Operation 82 3 6 Oil Return Operation at Simultaneous Cooling and ...

Page 75: ...or 16 S1NPH High pressure sensor Used to detect the high pressure 17 S1NPL Low pressure sensor Used to detect the low pressure 18 S1PH High pressure switch This functions when pressure increases to stop operation and avoid high pressure increase in the fault operation 19 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressur...

Page 76: ...120XAYDU REYQ72 96 120XAYCU S1PH S1NPH S1NPL C 3D119212 28 R7T 36 R16T 29 R8T 25 R4T 24 R3T 26 R5T 30 R9T 32 R11T 10 Y2S 22 R1T 4 Y2E 8 Y7E 11 Y3S 19 14 Y6S 16 6 Y4E 15 Y7S 9 Y1S 21 13 Y5S 2 M1F M2F 3 Y1E 5 Y3E 7 Y5E 20 27 R6T 35 R14T 33 R12T 23 R21T 1 M1C 18 34 R13T 31 R10T 17 12 Y4S ...

Page 77: ...68XAYDU REYQ144 168XAYCU S1PH S1NPH S1NPL C 3D119213 28 R7T 36 R16T 29 R8T 25 R4T 24 R3T 26 R5T 30 R9T 32 R11T 10 Y2S 22 R1T 4 Y2E 8 Y7E 11 Y3S 19 14 Y6S 16 6 Y4E 15 Y7S 9 Y1S 21 13 Y5S 2 M1F M2F 3 Y1E 5 Y3E 7 Y5E 20 27 R6T 35 R14T 33 R12T 23 R21T 1 M1C 18 34 R13T 31 R10T 17 12 Y4S ...

Page 78: ...erheating degree control while in cooling or subcooling degree control while in heating 4 Gas pipe thermistor R3T R3T R3T Used for gas superheating degree control while in cooling 5 Discharge air thermistor R4T Used for discharge air temperature control FXFQ T FXHQ M FXZQ TA FXUQ P FXEQ P FXSQ TA FXMQ M FXAQ P FXLQ M FXNQ M FXDQ M C 4D024460P 4 3 Indoor heat exchanger Fan Filter Filter 1 Gas pipin...

Page 79: ...XMQ PB FXTQ TA CXTQ TA Indoor heat exchanger Fan Filter Filter 4 2 1 3 Gas piping connection port Liquid piping connection port C 4D034245R 5 C 4D068194 4 1 3 Indoor heat exchanger Filter Filter 4 1 3 Gas piping connection port Liquid piping connection port ...

Page 80: ... pressure from high to low in bypassing hot gas 4 R1T Suction air thermistor Used to turn ON or OFF the thermostat 5 R2T Liquid pipe thermistor Used to control the opening degree of electronic expansion valve under the SC control 2 6 R3T Gas pipe thermistor Used to control the opening degree of electronic expansion valve under the SH control 7 R4T Discharge air thermistor Used to control the elect...

Page 81: ...r unit downstream of this Branch Selector unit is in heating Max 480 pulse 2 Electronic expansion valve EVH Y2E Opens while in heating or all indoor units are in cooling Max 760 pulse 3 Electronic expansion valve EVL Y3E Opens while in cooling Max 760 pulse Filter Filter Filter Filter Liquid pipe connection port Gas pipe connection port Double pipe heat exchanger Electronic Expansion Valve EVSC El...

Page 82: ...onic Expansion Valve Subcooling Electronic Expansion Valve Subcooling Electronic Expansion Valve Subcooling Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Gas ...

Page 83: ...uid pipe connection port Suction gas pipe connection port HP LP gas pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connectio...

Page 84: ...d pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Suctio...

Page 85: ...ansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expans...

Page 86: ...Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpi...

Page 87: ...pper R8T Solenoid valve Oil separator oil return Y1S Solenoid valve Hot gas bypass Y2S Solenoid valve Liquid shutoff Y3S High pressure sensor S1NPH Section W W Thermistor Heat exchanger gas lower R9T Thermistor Suction pipe R10T Inverter fan M2F Thermistor Outdoor air R1T Four way valve HP LP gas pipe Y4S High pressure switch S1PH Electronic expansion valve Heat exchanger upper Y1E Thermistor Deic...

Page 88: ...tail Thermistor Receiver gas purge R13T Electronic expansion valve Receiver gas purge Y7E Thermistor Heat exchanger liquid upper R4T Thermistor Heat exchanger liquid lower R5T Thermistor Subcooling gas R6T Part B detail Electronic expansion valve Subcooling injection Y4E Thermistor Subcooling liquid R7T Thermistor Receiver inlet R3T Thermistor Subcooling injection R16T ...

Page 89: ... valve Oil separator oil return Y1S Solenoid valve Hot gas bypass Y2S Solenoid valve Liquid shutoff Y3S High pressure sensor S1NPH Section W W Thermistor Heat exchanger gas lower R9T Thermistor Suction pipe R10T Inverter fan M2F Thermistor Outdoor air R1T Four way valve HP LP gas pipe Y4S High pressure switch S1PH Electronic expansion valve Heat exchanger upper Y1E Thermistor Deicer R11T Part A El...

Page 90: ...ail Thermistor Receiver gas purge R13T Electronic expansion valve Receiver gas purge Y7E Thermistor Heat exchanger liquid upper R4T Thermistor Heat exchanger liquid lower R5T Thermistor Subcooling gas R6T Part B detail Electronic expansion valve Subcooling injection Y4E Thermistor Subcooling liquid R7T Thermistor Receiver inlet R3T Thermistor Subcooling injection R16T ...

Page 91: ...nger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL OFF Fan OFF Cooling Unit Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Thermostat OFF Cooling Unit ON Fan ON Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH...

Page 92: ... EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Filter Filter Filter Filter Indoor Unit Thermostat OFF OFF Fan...

Page 93: ...hanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Filter Filter Filter Filter I...

Page 94: ...anger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Filter Filter Filter Filter In...

Page 95: ...ctronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Filter Filter Filter Filter Indoor Unit...

Page 96: ...ouble pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Double pipe heat exchanger Electronic Expansion Valve EVSC Electronic Expansion Valve EVH Electronic Expansion Valve EVL Filter Filter Filter Filter Filter Fil...

Page 97: ... Controller 89 3 Main Sub Setting 90 3 1 BRC1E73 90 3 2 When Wireless Remote Controller is Used Together 91 4 Address Setting for Wireless Remote Controller 92 5 Centralized Control Group No Setting 94 5 1 BRC1E73 94 5 2 Wireless Remote Controller 96 5 3 Group No Setting Example 97 6 Service Settings Menu Maintenance Menu 98 6 1 BRC1E73 98 ...

Page 98: ...remote controller Navigation FXFQ T BRC1E73 FXZQ TA BRC082A42W for BYFQ60C3W1W BRC082A42S for BYFQ60C3W1S BRC082A41W for BYFQ60B3W1 FXUQ P FXEQ P FXDQ M BRC4C82 FXSQ TA BRC082A43 FXMQ PB BRC4C82 Fan 2 steps BRC082A43 Fan 3 steps FXMQ M BRC4C82 FXHQ M BRC7E83 FXAQ P BRC7E818 FXLQ M FXNQ M FXTQ TA BRC4C82 CXTQ TA ...

Page 99: ...to press the buttons on the remote controller damage may result 1 Operation mode selector button Press this button to select the operation mode of your preference Available modes vary with the indoor unit model 2 Fan speed control button Press this button to select the fan speed of your preference Available fan speeds vary with the indoor unit model 3 Menu OK button Used to enter the main menu Use...

Page 100: ...ighlight the next items on the right hand side Each screen is scrolled in the right hand direction 7 Left button W Used to highlight the next items on the left hand side Each screen is scrolled in the left hand direction 8 On Off button Press this button and system will start Press this button again to stop the system 9 Operation lamp This lamp illuminates solid green during normal operation This ...

Page 101: ...mode changeover Fan speed control Menu display Confirmation of each setting On Off Cancel Operation lamp Press the Cancel button for 4 seconds or more Press the Cancel button once Press the Cancel button for 4 seconds or more Press the Cancel button once Maintenance Menu Model Name Operation Hours Indoor Unit Status Outdoor Unit Status Forced Defrost Error Display Swap Unit No Addressed Sensor Val...

Page 102: ...e display shows the set fan speed When the INSPECTION TEST button is pressed the display shows the system mode is in 13 14 15 16 17 TIMER RESERVE CANCEL BUTTON AIRFLOW DIRECTION ADJUST BUTTON OPERATION MODE SELECTOR BUTTON FILTER SIGN RESET BUTTON INSPECTION TEST BUTTON Press this button to select operation mode This button is used only by qualified service persons for maintenance purposes 11 12 U...

Page 103: ... to Sub To change a remote controller from Main to Sub proceed as follows 3 1 1 Field Settings The designation of the main and sub remote controllers can be swapped Note that this change requires turning the power OFF and then ON again Select Switch Main Sub Controller and press Menu OK button Service settings menu is displayed Item 2 is displayed Basic screen is displayed Press and hold the Cance...

Page 104: ...ssible to change the Main Sub setting from Main to Sub when only one remote controller is connected 2 When 2 remote controllers are being used it is not possible to change the setting from Main to Sub if one of the remote controllers is already set as Main 3 2 When Wireless Remote Controller is Used Together When using both a wired and a wireless remote controller for 1 indoor unit the wired contr...

Page 105: ...ntrol using the group operation For the wiring for the group operation please refer to the installation manual attached to the indoor unit and technical guide Setting for signal receiver PCB The address for the receiver is set to 1 at the factory To change the setting set the wireless address switch SS2 on the signal receiver PCB according to the table below Unit No No 1 No 2 No 3 Wireless address...

Page 106: ...etting options provided to enable discriminating by a beeping sound according to the operation A Standard or b Multi System Set the setting according to the customer s intention Field setting mode Address Multiple setting UP button DOWN button FAN button RESERVE button FILTER SIGN RESET button INSPECTION TEST button Remote Controller Indoor Unit Multiple setting Display on remote controller Behavi...

Page 107: ... once Service settings menu is displayed Item 2 is displayed Item 2 is displayed Item 2 is displayed Basic screen is displayed Press the Cancel button once Select the desired Group Address using the S T Up Down buttons and then press the Menu OK button Item 2 is displayed Select the desired Unit No using the S T Up Down buttons and then select Group Address using the WX buttons 0 1 00 Press and ho...

Page 108: ...operation manual for maintenance Group Address Group Select Group Address and then press the Menu OK button Select Group Address Group and then press the Menu OK button Select the desired Group Address using the S T Up Down buttons and then press the Menu OK button Service settings menu is displayed Item 2 is displayed Item 2 is displayed Item 2 is displayed Basic screen is displayed Press and hol...

Page 109: ...s INSPECTION TEST button for 4 seconds or more to enter field setting mode 2 Set mode No 00 with MODE button 3 Set the group No for each group with UP button or DOWN button 4 Enter the selected group numbers by pressing RESERVE button 5 Press INSPECTION TEST button and return to the normal mode UP button DOWN button MODE button RESERVE button Mode No Field setting mode Group No INSPECTION TEST but...

Page 110: ...displayed once for about 1 minute on the liquid crystal display This is not an operative fault Central Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 No Remote Controller 1 03 1 00 1 01 Main Sub 1 02 1 04 Indoor Outdoor Outdoor Outdoor F1 F2 F1 F2 Indoor Outdoor Outdoor Outdoor Group Control by Remo...

Page 111: ...l button for 4 seconds or more Press and hold the Cancel button for 4 seconds or more Select the desired item from the Maintenance menu and then press the Menu OK button Maintenance menu is displayed Item 2 is displayed Press the Cancel button Select the desired Unit No using the S T Up Down buttons The corresponding data will be displayed Select an item from Service settings menu and press Menu O...

Page 112: ...Group Address Unit Unit No Gr Addr Set Indoor unit AirNet Address Unit No Address Set Outdoor unit AirNet Address Unit No Address Set Error History RC Error History Unit No Error Date Time Up to 10 errors received by the remote controller can be displayed Indoor unit Error History Unit No Error Date Time Up to 5 errors from the indoor unit error record can be displayed Indoor Unit Status Unit No T...

Page 113: ...tus Unit No Select the unit number you want to check FAN Fan tap 1 Speed Fan speed rpm 2 FLAP Swing fixed EV Degree that electronic expansion valve is open pulse MP Drain pump ON OFF EH Electric heater ON OFF Hu Humidifier ON OFF 3 TBF Anti freezing control ON OFF FLOAT Float switch OPEN CLOSE T1 T2 T1 T2 external input OPEN CLOSE Th1 Suction air thermistor Th2 Heat exchanger liquid pipe thermisto...

Page 114: ...plays neither errors nor warnings Display warning ON Displays a warning on the screen if an error occurs Display warning OFF No warning is displayed Swap Unit No Current Unit No A unit No can be transferred to another Transfer Unit No Addressed Sensor Value Unit No 0 15 Select the unit number you want to check Code 00 01 02 03 04 05 06 07 08 09 30 4 31 4 5 32 4 5 33 4 34 4 5 35 4 6 Remote controll...

Page 115: ...l 112 5 4 Electronic Expansion Valve PI Control 114 5 5 Step Control of Outdoor Fans 115 5 6 Heat Exchanger Control 116 6 Protection Control 117 6 1 High Pressure Protection Control 117 6 2 Low Pressure Protection Control 119 6 3 Discharge Pipe Protection Control 120 6 4 Compressor Body Protection Control 121 6 5 Inverter Protection Control 121 7 Special Control 123 7 1 Pump Down Residual Control ...

Page 116: ...150 9 9 Hot Start Control In Heating Only 151 9 10 Louver Control for Preventing Ceiling Dirt 152 9 11 Heater Control Except FXTQ TA Models 153 9 12 Heater Control FXTQ TA Models 154 9 13 Gas Furnace Control CXTQ TA Models 157 9 14 3 Step Thermostat Processing FXTQ TA Models 158 9 15 Fan Control Heater Residual FXTQ TA Models 159 9 16 Interlocked with External Equipment FXTQ TA and CXTQ TA Models ...

Page 117: ...heater control Startup control include pressure equalization before startup 1 Startup control in cooling 2 Startup control in heating Basic control 1 Normal control 2 Compressor PI control 3 Operation priority and rotation of compressors 4 Compressor step control 5 Electronic expansion valve PI control 6 Step control of outdoor fans 7 Heat exchanger control Protection control 1 High pressure prote...

Page 118: ... electronic expansion valve Y1E Normal opening degree 0 pulse 0 pulse Normal opening degree 192 pulse 192 pulse Branch Selector unit actuator Normal cooling Normal simultaneous cooling heating Normal heating Cooling Cooling Heating Heating Electronic expansion valve EVSC Y1E Thermostat ON 0 pulse 0 pulse Subcooling degree control 0 pulse Non operating 0 pulse 0 pulse 0 pulse 0 pulse Thermostat OFF...

Page 119: ...es certain number Refer to Error Codes and Descriptions on page 236 of the troubleshooting for the items to determine the error 2 2 When System is in Stop Control The four way valves retain the condition ON when heating operation is stopped 2 3 Slave Unit Stops during Master Unit Control When slave unit is stopped because of low demand conditions for this unit is set same as system stop System sto...

Page 120: ...t system In addition the outdoor fan carry out the residual control for a while to accelerate pressure equalizing and to suppress melting of the refrigerant to the evaporator 3 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 Crankcase heater OFF Crankcase heater ON Discharge pipe...

Page 121: ...nits simultaneously to position the four way valve 4 1 Startup Control in Cooling DSH Discharge pipe superheating degree Pc High pressure sensor detection value Pe Low pressure sensor detection value Ta Outdoor air temperature Refer to page 115 for Step X 0 Hz 0 pulse 3 000 pulse fully open Step 15 Pc Pe 0 42 MPa 60 9 psi DSH 10 C 18 F Pc Pe 0 32 MPa 46 4 psi 20 rps or more OR Ta 20 C OFF 68 F Ta ...

Page 122: ...detection value 0 Hz 10 rps 10 sec A B C D E 0 pulse Step 4 Step 8 OR PI control Compressor M1C Electronic expansion valve main Y1E Inverter fan M1F M2F Frequency step up 5 sec interval Initial opening Pc Pe 0 42 MPa 60 9 psi DSH 12 C 21 6 F Pc Pe 0 32 MPa 46 4 psi 20 rps or more Pc Pe 0 17 MPa 24 7 psi REYQ72 120XA 19 24 29 38 57 Frequency rps REYQ144 168XA 16 4 16 4 18 24 36 A B C D E ...

Page 123: ...rge pipe protection Electric expansion valve Subcooling injection Y4E Compressor injection control Compressor injection control Compressor injection control Electronic expansion valve Refrigerant cooling Y5E Cooling refrigerant control Cooling refrigerant control Cooling refrigerant control Electronic expansion valve Receiver gas purge Y7E 0 pulse Gas purge control Gas purge control Solenoid valve...

Page 124: ... Te Low pressure equivalent saturation temperature TeS Target temperature of Te Varies depending on Te setting operating frequency etc Te set value Make this setting while in Setting mode 2 Te setting L M H A 1 factory setting 3 C 37 4 F 6 C 42 8 F 7 C 44 6 F 8 C 46 4 F 9 C 48 2 F 10 C 50 F 11 C 51 8 F 28 75 Ta C 0 65 C 104 55 Ta F 0 65 F Controls compressor capacity to adjust Tc to achieve target...

Page 125: ... 77 45 8 137 105 6 18 20 1 78 46 5 138 107 1 19 20 5 79 47 1 139 108 4 20 20 7 80 47 8 140 110 1 21 21 0 81 48 5 141 111 7 22 21 3 82 49 1 142 113 2 23 21 6 83 49 8 143 114 8 24 21 9 84 50 5 144 116 4 25 22 2 85 51 1 145 118 0 26 22 5 86 52 0 146 119 7 27 22 9 87 52 7 147 121 4 28 23 2 88 53 4 148 123 1 29 23 5 89 54 2 149 124 8 30 23 8 90 54 9 150 126 5 31 24 2 91 55 7 151 128 3 32 24 5 92 56 5 1...

Page 126: ...5 23 18 6 83 32 8 143 75 6 24 18 7 84 33 3 144 76 6 25 18 8 85 33 7 145 77 7 26 18 9 86 34 2 146 78 8 27 19 0 87 34 7 147 79 9 28 19 1 88 35 2 148 81 0 29 19 2 89 35 7 149 82 2 30 19 3 90 36 2 150 83 3 31 19 4 91 36 7 151 84 5 32 19 5 92 37 0 152 85 7 33 19 6 93 37 7 153 86 9 34 19 7 94 38 2 154 88 1 35 19 8 95 38 8 155 89 3 36 19 9 96 39 3 156 90 6 37 20 0 97 39 9 157 91 8 38 20 1 98 40 4 158 93 ...

Page 127: ...ooling electronic expansion valve EVT control In order to make the maximum use of the subcooling heat exchanger this function is used to exert PI control on the electronic expansion valve Y2E Y5E or Y3E so that the evaporator side gas pipe superheating degree SH will become constant SC Tc Tf SC Condenser outlet subcooling degree Tc High pressure equivalent saturated temperature Tf Liquid pipe temp...

Page 128: ...7 287 317 21 300 330 300 330 22 314 344 314 344 23 320 350 320 350 24 332 362 332 362 25 345 375 345 375 26 358 388 358 388 27 372 402 372 402 28 386 416 386 416 29 401 431 401 431 30 417 447 417 447 31 434 464 434 464 32 451 481 451 481 33 470 500 470 500 34 489 519 489 519 35 509 539 509 539 36 531 561 531 561 37 553 583 553 583 38 577 607 577 607 39 601 631 601 631 40 627 657 627 657 41 655 685...

Page 129: ...de Lower side Upper side Condenser Condenser Condenser Condenser Lower side Upper side Outdoor unit Lower side Upper side Lower side Upper side Condenser Condenser Condenser Lower side Upper side Outdoor unit Lower side Upper side Lower side Upper side Condenser Condenser CL decrease HL increase CL increase HL decrease Lower side Upper side Outdoor unit Lower side Upper side Lower side Upper side ...

Page 130: ...p down 1 step up 2 step down After 10 seconds After 15 seconds After 15 seconds After 10 seconds Pc 3 57 MPa 518 psi Pc 3 70 MPa 537 psi Pc 3 14 MPa 455 psi Pc 3 45 MPa 500 psi Pc 3 67 MPa 532 psi Pc 3 62 MPa 525 psi Pc 3 57 MPa 518 psi Compressor step 1 After 15 seconds Pc 3 33 MPa 483 psi After 10 seconds Upper limit compressor step max Max Step Pc 3 72 MPa 540 psi Pc High pressure sensor detect...

Page 131: ...MPa 540 psi Normal control 9 step down All units Compressor step 1 3 step up Current step maintained High pressure standby 2 times within 40 minutes Pc High pressure sensor detection value for master unit Abnormal stop E3 is displayed Pc 3 31 MPa 480 psi After 10 seconds After 10 seconds After 15 seconds High pressure switch 4 0 MPa 580 psi is activated ...

Page 132: ...4 is displayed Low pressure standby 3 times within 60 minutes Low pressure standby 4 times within 60 minutes Normal control 9 step down 9 step up 3 step up 21 step down After 10 seconds After 15 seconds After 15 seconds After 10 seconds Pe 0 10 MPa 14 5 psi Pe 0 07 MPa 10 2 psi Pe 0 15 MPa 21 8 psi Pe 0 11 MPa 16 0 psi Pe 0 10 MPa 14 5 psi Pe 0 08 MPa 11 6 psi Compressor step 1 After 10 seconds Up...

Page 133: ...pressor step 1 After 20 seconds HTdi 135 C 275 F HTdi 120 C 248 F continues for 10 minutes Ti 120 C 248 F continues for 5 seconds Ti 115 C 239 F continues for 10 minutes OR HTdi Value of compressor discharge pipe temperature Tdi compensated with outdoor air temperature Ti Compressor body temperature A Maximum of HTdi and Ti X C Y F REYQ72 120XA 115 C 239 F constant REYQ144 168XA Temperature determ...

Page 134: ...protection control This control is performed for each compressor Normal control Compressor body temperature standby Reduce compressor capacity step Compressor body temperature 108 C 226 4 F Compressor body temperature 135 C 275 F When occurring 3 times within 100 minutes the error code F3 is output Sub code 20 21 22 Normal control Inverter current standby Reduce compressor capacity A B When occurr...

Page 135: ...C 199 4 F less than 87 C 188 6 F C more than 100 C 212 F more than 100 C 212 F more than 95 C 203 F Condition REYQ144 168XATJU REYQ144 168XAYDU REYQ144 168XAYCU A more than 70 C 158 F more than 70 C 158 F more than 90 C 194 F B less than 67 C 152 6 F less than 67 C 152 6 F less than 87 C 188 6 F C more than 75 C 167 F more than 75 C 167 F more than 95 C 203 F Normal control Fin temperature standby...

Page 136: ...de For heat exchanger mode Electronic expansion valve Heat exchanger upper Y1E Same as normal control Same as normal control Electronic expansion valve Heat exchanger lower Y3E Electronic expansion valve Subcooling heat exchanger Y2E 0 pulse 0 pulse Electric expansion valve Subcooling injection Y4E 760 pulse 760 pulse Electronic expansion valve Refrigerant cooling Y5E Same as normal control Same a...

Page 137: ...d from Tc Te and compressor loads Part name Electric symbol Oil return control Compressor M1C Constant low pressure control Inverter fan M1F M2F For heat exchanger mode Electronic expansion valve Heat exchanger upper Y1E Same as normal control Electronic expansion valve Heat exchanger lower Y3E Electronic expansion valve Subcooling heat exchanger Y2E 0 pulse Electric expansion valve Subcooling inj...

Page 138: ... control Non operating unit 224 pulse Thermostat OFF unit Forced thermostat ON PI control Branch Selector unit actuator Normal cooling Electronic expansion valve EVSC Y1E Thermostat ON 0 pulse Non operating 0 pulse Thermostat OFF 0 pulse Electronic expansion valve EVH Y2E Thermostat ON 6 000 pulse Non operating 6 000 pulse Thermostat OFF 6 000 pulse Electronic expansion valve EVL Y3E Thermostat ON...

Page 139: ...pper Y6S Hold Solenoid valve Accumulator oil return Y7S Same as normal control Ending condition A lapse of 8 minutes while the frequency is more than that of oil return control Indoor unit actuator Cooling Heating Fan Thermostat ON unit Remote controller setting Remote controller setting Non operating unit OFF OFF Thermostat OFF unit Remote controller setting Remote controller setting Electronic e...

Page 140: ...our way valve Heat exchanger upper Y6S Hold Solenoid valve Accumulator oil return Y7S ON Ending condition A lapse of 15 minutes Tb 11 C 51 8 F continues for 30 seconds or more OR Indoor unit actuator Defrost control Fan Thermostat ON unit OFF Non operating unit OFF Thermostat OFF unit OFF Electronic expansion valve Thermostat ON unit Defrost EV opening degree Non operating unit Defrost EV opening ...

Page 141: ...The following diagram shows outdoor unit rotation in combination of 3 outdoor units Note Master unit slave unit 1 and slave unit 2 in this section are the names for installation They are determined in installation work and not changed thereafter These names are different from master unit and slave unit for control The outdoor unit connected the control wires F1 and F2 for the indoor unit should be...

Page 142: ...onic expansion valve will fully open and the electronic expansion valve of the indoor unit will open to activate the heating circuit The required switching time is approximately 6 minutes Field settings however can shorten the time from 6 minutes to 4 minutes 1 In cooling operation 2 In equalization 3 To heating mode Y2E Y3E Y1E Liquid pipe Dual pressure gas pipe Suction gas pipe Branch Selector u...

Page 143: ...lve will fully open and the electronic expansion valve of the indoor unit will open to activate the heating circuit The required switching time is approximately 6 minutes Field settings however can shorten the time from 6 minutes to 4 minutes 1 In heating 2 In equalization 3 To cooling Y2E Y3E Y1E Heating unit Branch Selector unit Indoor unit Dual pressure gas pipe Liquid pipe Suction gas pipe Y2E...

Page 144: ...g time 30 seconds switching control time While switching The compressor stops operating 4 Startup control Switching the dual pressure gas pipe from low pressure to high pressure 5 Into heating operation or cooling and heating simultaneous operation Each indoor unit In warm air supply operation under cool air prevention control for 3 to 5 minutes Suction gas pipe Dual pressure gas pipe Cooling Cool...

Page 145: ...xpansion valves of branch selector unit Required switching time 2 to 4 minutes switching control time While switching The compressor stops operating 4 Startup control Switching the dual pressure gas pipe from low pressure to high pressure 5 Into all unit cooling operation In cool air supply operation Suction gas pipe Dual pressure gas pipe Heating Heating Heating Heating Heating Suction gas pipe D...

Page 146: ...te other outdoor units On the system with 1 outdoor unit this emergency operation is not available This function will work for 72 hours from the moment you set Emergency operation with outdoor unit PCB setting 8 2 Demand Operation In order to limit the power consumption the capacity of outdoor unit is forcibly reduced by using Demand 1 Setting or Demand 2 Setting To operate the unit with this mode...

Page 147: ...t MP Drain pump kit ON MP Drain pump kit ON MP Closed Electronic expansion valve Capacity control Electronic expansion valve Closed YE MA OFF EH OFF EH Humidifier OFF Hu Humidifier OFF Hu YE The previous settings of airflow rate wind direction and temperature are displayed Is the RUN indicating lamp blinking Press the RESET RUN STOP push button Electronic expansion valve Thermostat ON operation si...

Page 148: ... Fan Operating in L mode MF Fan Operating in L mode after it stops for 6 min MF YE Drain pump kit YE MP Swing flap Swing flap Set wind direction Fan MF Operating with set airflow rate YE Closed Program dry display Electronic expansion valve Superheated degree control Electronic expansion valve Closed Electronic expansion valve Drain pump kit OFF after 5 min residual operation Aux electric heater 4...

Page 149: ...N OFF Humidifier OFF ON Humidifier ON OFF Humidifier OFF OFF MP Yes Yes No No No No 13 14 13 18 Yes Yes Yes Yes Swing flap Is defrost operation in progress Yes No Option Yes Swing flap Set wind direction Fan Operating with set airflow rate Fan LL operation Fan Operating in L mode Fan Stop 3 2 1 Remote controller does not display STANDBY Closed Remote controller displays STANDBY Drain pump kit MF F...

Page 150: ...et wind direction According to wind direction instruction from the remote controller the wind direction is set to 100 horizontal while in heating operation 12 Fan According to fan speed instruction from the remote controller the fan is put into operation in LL mode while in heating operation 13 Wind direction When the heating thermostat turns OFF the wind direction will be set to 100 horizontal 14...

Page 151: ...suction air thermistor Default setting When using the remote controller thermistor Field setting is required Examples are given to illustrate a control target temperature that satisfies the remote controller set temperature Remote controller set temperature Control target temperature Remote controller set temperature Control target temperature 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ...

Page 152: ... target temperature for operation What is the temperature around people The temperature around people refers to the temperature of the living space obtained from the temperature around the ceiling and the temperature underfoot The temperature is calculated using the detected values of the suction air thermistor and the infrared presence floor sensor It is difficult to use only suction air temperat...

Page 153: ...tion temperature is near the set temperature Assuming the set temperature in the figure above is 24 C 75 F and the suction temperature has changed from 18 C 64 F to 30 C 86 F A F This example also assumes there are several other air conditioners and the suction temperature changes even when the thermostat is off Suction air thermistor is used for temperatures from 18 C 64 F to 23 C 73 F A C Remote...

Page 154: ...s there are several other air conditioners and the suction temperature changes even when the thermostat sensor is off Suction air thermistor is used for temperatures from 18 C 64 F to 25 C 77 F A C Remote controller thermistor is used for temperatures from 25 C 77 F to 28 C 82 F C D Assuming suction temperature has changed from 28 C 82 F to 18 C 64 F D A Remote controller thermistor is used for te...

Page 155: ...the field setting 14 24 5 is set to 02 Tro will be the same as the cooling set temperature T Room temperature Remote controller set temperature Tro Room temperature at the start of dry operation Tr Room temperature 1 The thermistor for room temperature detection depends on the field setting 10 20 2 Thermostat OFF Normal operation Thermostat ON T 1 0 C 1 8 F T 1 0 C 1 8 F Thermostat OFF Normal oper...

Page 156: ...e outside of use range To avoid the above condition a limit based on the suction air temperature is set for the use range of the temperature around people Cooling operation When the floor temperature is lower than suction air temperature R1T R1T will be treated as the control target temperature for operation When the temperature around people is 15 C 59 F or lower R1T will be treated as the contro...

Page 157: ...Control temp Differential value set to 1 C 1 8 F Set heating temp Set cooling temp Heating mode Control temp Differential value set to 2 C 3 6 F Heating mode Control temp Differential value set to 3 C 5 4 F Heating mode Cooling mode Control temp Set heating temp Set cooling temp Set heating temp Set cooling temp Differential value set to 4 C 7 2 F Heating mode Cooling mode Control temp Differentia...

Page 158: ...ly After the thermostat turns OFF the drain pump continues to operate for another 5 minutes 1 If the float switch turns ON again during the residual operation of the drain pump cooling operation also turns on again thermostat ON 2 If the float switch remains OFF even after the residual operation of the drain pump has ended the error code A3 is displayed on the remote controller 3 The drain pump tu...

Page 159: ...he drain pump turns ON simultaneously 1 If the float switch continues to turn OFF and ON 5 times consecutively it is judged as a drain system error and the error code AF is displayed on the remote controller 2 The drain pump continues to turn ON OFF in accordance with the float switch ON OFF even after AF is displayed on the remote controller 3 While the error code AF is displayed if the float swi...

Page 160: ...mes lower As T Remote controller set temp Suction air temp becomes smaller SHS becomes higher Subcooling degree control in heating operation This function is used to adjust the opening of the electronic expansion valve so that the high pressure equivalent saturated temperature Tc which is converted from the detected pressure of the high pressure sensor in the outdoor unit and the subcooling degree...

Page 161: ...for starting Liquid pipe temperature 1 C 30 2 F for total of 40 minutes or Liquid pipe temperature 5 C 23 F for total of 10 minutes Condition for cancelling Liquid pipe temperature 7 C 44 6 F for 10 minutes continuously Concept of freeze up prevention control System avoids freeze up prevention For comfort system avoids unnecessary thermostat ON OFF For ensuring compressor reliability system avoids...

Page 162: ...tal of 15 minutes or Liquid pipe temperature 0 C 32 F for 1 minute continuously During freeze up prevention control the airflow rate is fixed to LL The cancelling conditions are same as the standard 0ºC 32 F 7ºC 44 6 F 10 min 1 min 1ºC 33 8 F t1 t2 t3 t4 7ºC 44 6 F 10 min OR t 15 minutes Freeze up prevention control Forced OFF by thermostat Freeze up prevention control Forced OFF by thermostat Liq...

Page 163: ...t OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Horizontal Airflow direction set LL Horizontal Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Horizontal Totally closed Airflow direction set OFF Horizontal Horizontal Horizontal Totally closed Cooling Thermostat ON in program dry Swing L 1 Swing Swing Swing Swing Airflow direction set L 1 Set Se...

Page 164: ...efore initiating the hot start OFF Hot start control Hot start in progress Normal control Normal control H L remote controller setting LL OFF Remote controller setting P0 Horizontal Fan Louver Ending condition Lapse of 3 minutes TH2 34 C 93 2 F Tc 52 C 125 6 F OR Starting condition Defrost ending Oil return ending Thermostat ON OR The fan is not OFF before initiating the hot start LL The fan is OF...

Page 165: ...FXZQ TA and FXEQ P models Factory setting FXFQ T models draft prevention position FXZQ TA FXEQ P models standard position P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Draft prevention position Standard position Prohibited Prohibited Dirt prevention position P0 P0 P0 P1 P2 P2 P1 P3 P3 P4 P4 P1 P2 P3 P4 Same as existing pos...

Page 166: ...cted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor S1NPH of the outdoor unit 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...

Page 167: ...ctric heater Heating Automatic heating Auxiliary heater enabled 1 Not in heating Automatic heating Auxiliary heater enabled 0 3 Heater not allowed Heater allowed Heater 1 OFF Heater 2 OFF OR OR OR Thermostat OFF Operation OFF Heater 1 OFF Heater 2 OFF Thermostat OFF Thermostat ON Thermostat ON Condition C Condition B Condition B Thermostat OFF H P Heating In operation Heater 1 OFF Heater 2 OFF Fan...

Page 168: ...re condition ON 1 Liquid pipe temperature condition ON 2 Heater ON permission Defrost oil return 0 4 Not during defrost oil return No fan motor system error During defrost oil return Heater ON permission Defrost oil return 1 4 OR Not during defrost oil return Fan motor system error Heater ON permission Defrost oil return 0 4 ON OFF 49 120 2 54 129 2 Tc C F ON OFF 46 114 8 49 120 2 TH2 C F 1 Electr...

Page 169: ...e set to the initial value Thermostat OFF Operation OFF ENTRY 5 minutes timer starts Condition A Time up 2 H P Heating Not in operation Heater 1 ON Heater 2 OFF Fan ON ENTRY 5 minutes timer starts OR Thermostat step 2 OFF H P Heating Not in operation Heater 1 ON Heater 2 ON OFF for single heater Fan ON Electric heater capacity setting Setting not available Thermostat step 2 ON Time up Electric hea...

Page 170: ...ombustion heating Detail Note The airflow rate during gas furnace operation depends on the intensity of combustion heating and therefore may be different from the airflow setting displayed on the remote controller Thermostat ON Thermostat OFF Thermostat OFF Thermostat ON Heat pump operation Hot water heater signal from outdoor unit ON Compressor is suspended OR Hot water heater signal from outdoor...

Page 171: ...3 4 A and B values vary automatically based on the field setting 12 22 2 5 If directly after a change in conditions it is such that the thermostat could be either ON or OFF controlled temperature is within ranges A and B the thermostat will be switched to ON No errors except errors in which the system keeps operating has occurred Remote controller ON Thermostat step 1 OFF Thermostat step 2 OFF The...

Page 172: ... input signal to the X1M AIR CLEANER terminal on the PCB 9 16 2 Humidifier When a humidifier is connected onsite the fan operates with the airflow rate set of the remote controller or with the H tap 1 External input ON is an input signal to the X1M HUMIDIFIER terminal on the PCB Note This control is not applicable to the humidifier connected to the wiring adaptor but to the humidifier connected to...

Page 173: ... turns ON the relay on the X2M ECONOMIZER2 on the PCB 2 External input ON is an input signal to the X1M ECONOMIZER1 terminal on the PCB 3 Refer to Optional Kit Setting UV lamp Humidifier Economizer for FXTQ TA and CXTQ TA models on page 181 4 Remote control ON signal Contact output which shows the operating status of the indoor unit This signal turns on the relay X2M CONTROL ON OFF on the PCB Othe...

Page 174: ...Unit 186 1 6 Setting of Operation Control Mode 186 2 Field Settings for Outdoor Unit 188 2 1 DIP Switch Setting Mounting a Spare PCB 188 2 2 Accessing the BS Buttons on the PCB 190 2 3 Operating the BS Buttons and DIP Switches on the PCB 191 2 4 Connecting the PC Configurator to the Outdoor Unit 194 2 5 Monitoring Function and Field Settings 195 2 6 Cool Heat Mode Changeover 217 2 7 Night Time Low...

Page 175: ...unit In the case of group total setting 1 Press and hold Cancel button for 4 seconds or more Service settings menu is displayed 2 Select Field Settings in the Service Settings menu and press Menu OK button Field settings screen is displayed 3 Highlight the mode and select desired Mode No by using Up Down button 4 In the case of setting per indoor unit during group control When Mode No such as 20 2...

Page 176: ... returns 8 In the case of multiple setting changes repeat 3 to 7 9 After all setting changes are completed press Cancel button twice 10 Backlight goes out and Checking the connection Please standby is displayed for initialization After the initialization the basic screen returns Installation of optional accessories on the indoor unit may require changes to field settings See the manual of the opti...

Page 177: ...T button for 4 seconds during normal mode to enter the field setting mode 2 Press the MODE button to select the desired mode No 3 Press the UP button to select the first code No 4 Press the DOWN button to select the second code No 5 Press the RESERVE button to confirm the setting 6 Press the INSPECTION TEST button to return to the normal mode RESERVE button INSPECTION TEST button Mode No Field set...

Page 178: ...ature setting W 4 During group control when setting by each indoor unit mode No 20 22 and 23 have been selected press the BS8 4 button unit No and select the indoor unit No to be set This operation is unnecessary when setting by group 5 Press the BS9 button 5 set A and select first code No 6 Press the BS10 button 6 set B and select second code No 7 Press the BS7 button 7 set cancel once and the pr...

Page 179: ...tandard Slightly increased Increased 3 6 Electric heater setting Refer to page 174 for details 5 6 Electric heater capacity setting Refer to page 175 for details 6 9 Setting the rate of human detection High sensitivity Low sensitivity Standard sensitivity Infrared presence floor sensor disabled 7 Automatic airflow adjustment OFF Completion of airflow adjustment Start of airflow adjustment 8 9 Comp...

Page 180: ...odels 10 Only for CXTQ TA models 11 Only for FXTQ TA and CXTQ TA models 12 Only for FXDQ M models 13 Only for FXEQ P models Mode No 2 First Code No Setting Contents Second Code No 01 02 03 04 14 24 4 11 Optional kit setting UV lamp humidifier economizer Refer to page 181 for details 5 11 Residential dry Set temperature room temperature Set temperature same as cooling set temperature 9 13 Mold proo...

Page 181: ... ON OFF input z z z z z z z 2 Thermostat switching z z z z z z z 3 Airflow setting when heating thermostat is OFF z z z z z z z 4 Setting of operation mode to AUTO z z z z z z z 5 Auto restart after power failure reset z z z z z z z 6 Airflow setting when cooling thermostat is OFF z z z z z z z 13 23 0 Setting of airflow rate z z z z z z z 1 Airflow direction setting z z z 2 Swing pattern settings...

Page 182: ... OFF input z z z z z z z 2 Thermostat switching z z z z z z z 3 Airflow setting when heating thermostat is OFF z z z z z z z 4 Setting of operation mode to AUTO z z z z z z z 5 Auto restart after power failure reset z z z z z z z 6 Airflow setting when cooling thermostat is OFF z z z z z z z 13 23 0 Setting of airflow rate z z 1 Airflow direction setting z 2 Swing pattern settings 4 Setting of air...

Page 183: ...nd Code No is set to 03 room temperature is controlled by the remote controller thermistor Setting 10 20 1 01 Long life filter 02 Ultra long life filter Filter contamination heavy light 10 20 0 Light 01 Heavy 02 Light 01 Heavy 02 Model FXFQ T 2 500 hrs 1 250 hrs 10 000 hrs 5 000 hrs FXZQ TA FXUQ P FXEQ P FXDQ M FXSQ TA FXMQ PB FXMQ M FXHQ M FXLQ M FXNQ M FXAQ P 200 hrs 100 hrs 200 hrs 100 hrs Sett...

Page 184: ...4 66 2 62 6 69 8 73 4 77 80 6 84 2 87 8 91 4 95 98 6 F F 57 2 60 8 64 4 68 71 6 75 2 78 8 82 4 86 89 6 93 2 In cooling In heating Suction air temperature Suction air temperature Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor Suction air thermistor Remote controller thermistor Remote co...

Page 185: ...ce floor sensor only By selecting the energy saving operation mode in the absence the target temperature is shifted to the energy saving end by 1 C 1 8 F maximum 2 C 3 6 F after the state of absence continues for a certain period of time Absent time defined for detection can be selected as follows The set temperature displayed on the remote controller remains same even if the target temperature is...

Page 186: ... ON Mode No First Code No Symbol Second Code No 01 02 03 04 05 06 11 21 1 Ton 4 C 7 2 F 3 5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F Toff 2 C 3 6 F 1 5 C 2 7 F 1 C 1 8 F 0 5 C 0 9 F 0 C 0 F 0 5 C 0 9 F Mode No First Code No Symbol Second Code No 01 02 03 04 05 06 11 21 1 Ton 4 C 7 2 F 3 5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F 2 Toff 2 C 3 6 F 1 5 C 2 7 F 1 C 1 8 F 0 5 C 0 ...

Page 187: ...5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F 100 C 148 F 2 Toff 2 C 3 6 F 1 5 C 2 7 F 1 C 1 8 F 0 5 C 0 9 F 0 C 0 F 0 5 C 0 9 F 98 C 144 4 F Second Code No Ton 01 02 03 04 05 06 07 4 C 7 2 F 3 5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F 100 C 148 F Toff 07 98 C 144 4 F z 06 0 5 C 0 9 F z z z z z z z 05 0 C 0 F z z z z z z 04 0 5 C 0 9 F z z z z z 03 1 C 1 8 F z z z z 02 1 5 C 2 ...

Page 188: ...bsence Model Mode No First Code No Second Code No 01 02 03 04 05 06 07 08 09 10 Heater kW No heater kit 3 5 6 8 10 15 19 20 25 FXTQ09TAVJUA 11 21 5 z z z FXTQ09TAVJUD z z z FXTQ12TAVJUA z z z z FXTQ12TAVJUD z z z z FXTQ18TAVJUA z z z z z z FXTQ18TAVJUD z z z z z z FXTQ24TAVJUA z z z z z z FXTQ24TAVJUD z z z z z z FXTQ30TAVJUA z z z z z z FXTQ30TAVJUD z z z z z z FXTQ36TAVJUA z z z z z z FXTQ36TAVJ...

Page 189: ...2 as in the following table by indoor unit with the Mode No 11 21 If operation does not stop automatically or the Second Code No is not set to 02 return to the step 3 above to make settings again Notes 1 Make sure that the external static pressure is within the range of specifications before making settings If it is outside the range automatic adjustment fails which may cause an insufficient airfl...

Page 190: ...ode No Second Code No Contents 11 21 9 01 4 C 7 2 F 02 2 C 3 6 F 03 0 C 0 F 04 2 C 3 6 F Environment Operation Mode Problem Setting Value The unit is installed close to a wall or a window High thermal capacity of the floor such as concrete etc There are many heat sources including PC There is a non negligible heat source such as floor heating Heating Excessive heating 2 C 3 6 F Insufficient heatin...

Page 191: ...the units may start automatically after power failure reset or the main power supply turned ON again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation Mode No First Code No Second Code No Content...

Page 192: ...an 2 7 m 8 3 4 ft Lower than 3 0 m 10 ft Lower than 3 5 m 11 1 2 ft 02 High Ceiling 1 Lower than 3 0 m 10 ft Lower than 3 3 m 10 3 4 ft Lower than 3 8 m 12 1 2 ft 03 Higher Ceiling 2 Lower than 3 5 m 11 1 2 ft Lower than 3 5 m 11 1 2 ft Mode No First Code No Second Code No Contents Ceiling height 4 way Outlets 3 way Outlets 2 way Outlets 13 23 0 01 Standard Lower than 3 2 m 10 1 2 ft Lower than 3 ...

Page 193: ...XMQ15 18 24 30 36 48 54PB at factory setting 1 FXMQ15 18 24 30 36 48PB cannot be set to 30 Pa 0 12 inWG 2 FXMQ07 09 12PB cannot be set to 110 200 Pa 0 44 0 80 inWG 3 FXMQ54PB cannot be set to 30 Pa 0 12 inWG or 150 200 Pa 0 60 0 80 inWG Mode No First Code No Second Code No Contents 13 23 2 01 All direction synchronized swing 02 03 Facing swing Mode No First Code No Second Code No Contents 13 23 4 ...

Page 194: ...60 Pa 0 24 inWG 07 70 Pa 0 28 inWG 08 80 Pa 0 32 inWG 09 90 Pa 0 36 inWG 10 100 Pa 0 40 inWG 11 110 Pa 0 44 inWG 12 120 Pa 0 48 inWG 13 130 Pa 0 52 inWG 14 140 Pa 0 56 inWG 15 150 Pa 0 60 inWG 2 Mode No First Code No Second Code No Contents UV lamp humidifier fan speed Economizer setting for Mech standby duration minutes 14 24 4 01 Refer to controller 10 02 High 10 03 Refer to controller 20 04 Hig...

Page 195: ...er the thermostat is stopped For the purpose of preventing dust on the air filter from falling off Interlocked Operation between Humidifier and Drain Pump This is used to interlock the humidifier with the drain pump When water is drained out of the unit this setting is unnecessary Individual Setting of Ventilation This is set to perform individual operation of Energy recovery ventilator using the ...

Page 196: ...d above Room Temperature Display For BRC1E73 only A Detailed display screen can be selected as the display screen This setting is used if you do not want to display Room temperature display on the Detailed display screen Thermistor Sensor for Auto Changeover and Setback Control by the Remote Controller For BRC1E73 only Select a thermistor to utilize for the cool heat mode automatic changeover and ...

Page 197: ...BRC1E73 only Select the operation mode in which the setback function is available Button Level 2 Level 3 Selectable Enable Unselectable Disable On Off Selectable Enable Unselectable Enable Mode Selectable Enable Unselectable Disable Fan Speed Selectable Disable Unselectable Disable Menu OK Unselectable Disable Unselectable Disable Cancel Unselectable Disable Unselectable Disable Mode No First Code...

Page 198: ...Airflow Trim 15 10 OFF OFF OFF OFF 12 8 ON OFF OFF OFF 9 6 OFF ON OFF OFF 6 4 ON ON OFF OFF 3 2 OFF OFF ON OFF 0 0 ON OFF ON OFF 3 2 OFF ON ON OFF 6 4 ON ON ON OFF 9 6 OFF OFF OFF ON 12 8 ON OFF OFF ON 15 10 OFF ON OFF ON 0 ON ON OFF ON 0 OFF OFF ON ON 0 ON OFF ON ON 0 OFF ON ON ON 0 ON ON ON ON Dip switch DS2 Heat ON Delay 5 sec OFF OFF OFF 10 sec ON OFF OFF 15 sec OFF ON OFF 20 sec ON ON OFF 25 ...

Page 199: ...nly possible by remote controller Used when you want to turn ON by central remote controller only and OFF by remote controller only Centralized Used when you want to turn ON by central remote controller only and turn ON OFF freely by remote controller during set time Individual Used when you want to turn ON OFF by both central remote controller and remote controller Timer operation possible by rem...

Page 200: ...rol Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individual stop by central remote controller or timer stop ON OFF control impossible by remote controller Rejection Example Rejection Example Rejection Example Rejection Acceptance 0 Rejection 10 Acceptance Example Acceptance Example 1 Example Rejection 11 OFF...

Page 201: ...settings of spare PCB is different from that used for factory settings described above Be sure to refer to the table shown on the following page in order to make settings of spare PCB after replacement Enforce a re initialization of communication hold press the RETURN BS3 button for minimum 5 seconds After initialization a test operation is required from outdoor unit hold the SET BS2 button until ...

Page 202: ...er disconnected Application model The setting method represents the position of switches REYQ72XA Set DS2 2 to ON REYQ96XA Set DS2 1 and DS2 2 to ON REYQ120XA Set DS2 3 to ON REYQ144XA Set DS2 2 and DS2 3 to ON REYQ168XA Set DS2 1 DS2 2 and DS2 3 to ON 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF DS1 DS2 1 2 3 4 1 2 3 4 ON OFF ...

Page 203: ...figure You can see the 3 BS buttons and 3 seven segment displays and DIP switches Operate the switches and BS buttons with an insulated stick such as a closed ballpoint pen to avoid touching of live parts Location of the segment displays buttons and DIP switches Segment display indications 1 Service window cover 2 Inspection door 3 Main PCB with 3 seven segment display and 3 BS buttons 1 2 3 1 2 B...

Page 204: ...ctions of the BS button switches which are located on the main PCB A1P Turn ON the power supply of the outdoor unit and all indoor units When the communication between indoor units and outdoor unit s is established and normal the segment indication state will be as follows default situation when shipped from factory When turning ON the power supply the display blinks ON and OFF First checks of the...

Page 205: ... of parameter 1 10 to know how many indoor units are connected to the system A B C in this case defined as A 1 B 10 C the value we want to know monitor Make sure the segment indication is displayed in operational default mode as shipped from factory Press the MODE BS1 button once result segment display Press the SET BS2 button 10 times result segment display Press the RETURN BS3 button once the va...

Page 206: ...ase defined as A 2 B 10 C the value we want to know change Make sure the segment indication is as during normal operation default situation when shipped from factory Press the MODE BS1 button for over 5 seconds result segment display Press the SET BS2 button 18 times result segment display Press the RETURN BS3 button once the value which is returned depending on the actual field situation is the s...

Page 207: ...nnection of the optional PC configurator cable to the outdoor unit has to be done on A1P Connect the 999482P3 cable to the 5 pin blue connector X27A Caution Works executed on the outdoor unit are best done under dry weather conditions to avoid water ingress X 2 7 A 1 2 3 2 3 4 5 H JS T X27A A1P 1 PC 2 Cable 999482P3 3 Outdoor unit main PCB ...

Page 208: ...ng under low noise restrictions 0 unit is currently not operating under low noise restrictions Night time low noise operation reduces the sound generated by the unit compared to nominal operating conditions Night time low noise operation can be set in mode 2 There are two methods to activate night time low noise operation of the outdoor unit system The first method is to enable an automatic night ...

Page 209: ...the 2nd last error code 1 19 shows the 3rd last error code When the latest error codes were reset by accident on an indoor unit user interface they can be checked again through this monitoring settings 1 40 shows the current cooling comfort setting 1 41 shows the current heating comfort setting 1 42 shows the current high pressure sensor value psi 1 43 shows the current low pressure sensor value p...

Page 210: ...etting Used to make setting of targeted condensing temperature for heating operation 2 0 9 Auto 38 46 C 100 4 114 8 F 0 41 C 105 8 F 1 43 C 109 4 F 3 46 C 114 8 F 6 12 External low noise setting demand setting Used to receive external low noise or demand signal 2 1 2 Input LNO DE NO 0 YES 1 13 AIRNET address Used to set address of AIRNET 2 1 3 0 0 Address 63 6 3 16 Heat pump lockout 1 Used for hea...

Page 211: ...ontrol signal is input 2 3 1 Level 1 40 1 Level 2 50 2 Level 3 55 3 32 Normal demand setting Used to set permanent demand 1 or 2 control without inputting any external signal 2 3 2 OFF 0 Demand 1 2 30 1 Demand 2 2 31 2 34 Indoor fan tap setting Indoor fan speed is limited to L tap depending on connection capacity and outdoor air temperature Ta 1 Indoor condition A Temperature difference Average of...

Page 212: ...g is not applicable to multi Branch Selector unit 2 4 5 Low ambient cooling not available 0 Low ambient cooling available 1 47 Te setting Heat recovery operation Used to make setting of targeted evaporating temperature for heat recovery operation 2 4 7 Auto 6 17 C 42 8 62 6 F 0 6 C 42 8 F 2 7 C 44 6 F 3 8 C 46 4 F 4 9 C 48 2 F 5 10 C 50 0 F 6 11 C 51 8 F 7 49 Outdoor 50 m 164 ft above indoor Heigh...

Page 213: ...medium fan speed 1 30 minutes OFF 1 minute ON with high fan speed 2 90 Indoor unit without power Multi tenant function setting 2 9 0 Invalid 0 Valid 1 92 Te target temperature upper limit Used to make setting of targeted evaporating temperature upper limit for cooling and heat recovery operation 2 9 2 L 0 M 1 H 2 97 Auxiliary heater maximum allowable temperature Auxiliary heater is allowed to ener...

Page 214: ...tton Setting does not return to factory setting when exit mode 2 To cancel the function change setting manually to factory setting Once function is activated t01 appears To stop current function press once the RETURN BS3 button For detailed description about each setting refer to Details of Setting Mode 2 m2 on page 202 Indication means factory setting bold ...

Page 215: ...ation when outdoor units are connected in multiple system combination a Change 2 0 to 0 1 or 2 in function of required functionality 2 2 Low noise demand address Address for low noise demand operation 1 or more systems maximum 10 systems wired by F1F2 OUT D can operate use the LNO Low Noise Operation or and the DE Demand Control by instruction of field supplied input to optional PCB DTA104A61 62 T...

Page 216: ...tional external control adaptor DTA104A61 62 is installed Default value 0 To activate this function change 2 12 to 1 2 13 AIRNET address When an AIRNET system will be used outdoor unit needs an AIRNET address Also to facilitate the recognition of a system in the map lay out of the service checker type III set each system a unique address between 1 and 63 When duplicating of AIRNET address UC error...

Page 217: ... button is not pressed the system will remain in refrigerant recovery vacuuming mode 2 22 Automatic night time low noise setting and level during night time By changing this setting you can activate the automatic night time low noise operation function of the unit and define the level of operation Depending on the chosen level the noise level will be lowered 3 Level 3 2 Level 2 1 Level 1 The start...

Page 218: ...ter checker module All 3 phases and neutral are available and Inverter PCB control is active Check if the green LED HAP on the inverter PCBs are blinking normal approx 1 second If LEDs are OFF need to exit the standby mode of the inverter Disconnect and reconnect power supply control PCB or Forced thermostat ON condition or Make shortly set 2 6 1 forced thermostat ON indoor or 2 20 1 manual refrig...

Page 219: ...z note 6 sec 3 sec 3 sec 30 sec Check 4 Check 5 Check 1 AC power input terminal L1B L2B L3B at REYQ72 120XATJU 208 230 V unbalance maximum 2 terminal L1D L2D L3D at REYQ144 168XATJU 208 230 V unbalance maximum 2 terminal L1B L2B L3B at REYQ XAYDU 460 V unbalance maximum 2 terminal L1B L2B L3B at REYQ XAYCU 575 V unbalance maximum 2 Check 2 DC voltage connector X6A increase to 260 VDC at REYQ72 120...

Page 220: ...n external signal is sent to the unit this setting defines the level power consumption limitation that will be applied for step 2 The level is according to the table Default value 1 Change 2 31 to 1 2 or 3 in function of required limitation Value 2 30 Power consumption limitation approximately 1 60 2 65 3 default 70 4 75 5 80 6 85 7 90 8 95 Value 2 31 Power consumption limitation approximately 1 d...

Page 221: ... on a higher position than outdoor units and the height difference between the highest indoor unit and the outdoor unit exceeds 40 m 130 ft the setting 2 35 should be changed to 0 Value 2 32 Restriction reference 0 default Function not active 1 Follows 2 30 setting 2 Follows 2 31 setting Value 2 34 Indoor fan tap setting 0 default Fan speed is limited to L tap when indoor units capacity 130 1 In h...

Page 222: ...ue 0 Compressor operation enabled Field setting Set 3 Slave 2 module is disabled permanently Combination table setting 2 38 2 39 and 2 40 2 42 Outdoor fan noise countermeasure Change fans rotational speed and reduce noise by the interference of air blow noise between outdoor units Default value 0 Field setting Mode A 1 Mode B 2 2 45 Low ambient cooling Default value 0 This setting is not applicabl...

Page 223: ...aster F1F2 Ind terminals should be connected to indoor units 2 forced Slave 1 only Q1Q2 terminals should be wired to Master module 3 forced Slave 2 only Q1Q2 terminals should be wired to Master module 2 60 Gas furnace setting Default value 0 When a gas furnace is connected the setting 2 60 has to be changed to 1 2 62 Cooling and heating capacity learning control Default value 0 Adjust cooling and ...

Page 224: ...ome indoor units are temporarily without power supply Field setting 2 It is possible to operate system with U4 warning when some indoor units are temporarily without power supply Following conditions need to fulfil Maximum equivalent piping length of the farthest indoor less than 120 m 394 ft Index indoor units power simultaneously less than 30 of the nominal outdoor Total capacity is less than 30...

Page 225: ... limit Default value 1 If Auto Te then use this setting to address different load profiles If the frequent operation is at lower system load then use a higher setting under 2 92 Note In high humid areas it is recommended to keep this setting to 0 or 1 Value 2 92 Te target temperature upper limit 0 L 1 default M 2 H ...

Page 226: ...mum allowable temperature Item Description Min Max Increments Auxiliary heater allowable temperature Below this temperature auxiliary heater can be energized based on the indoor temperature condition 0 F 65 F 35 F default 5 F Auxiliary heater allowable temperature release differential When the outdoor temperature recovered by this temperature auxiliary heater cannot be allowed 5 F 10 F default 15 ...

Page 227: ...d 5 F 10 F default 15 F Value 2 16 Auxiliary heater 0 default OFF 1 ON Value 2 37 Controlling mode 0 default OFF 1 Mode 1 2 Mode 2 3 Mode 3 4 Mode 4 5 Mode 5 6 Mode 6 Type Description Actions Field setting Shorted between Heating thermostat ON Heating thermostat OFF Auxiliary heater Indoor fan Auxiliary heater Indoor fan I Heat pump heating is always locked out 2 16 ON ON ON H L OFF LL II Mode 1 L...

Page 228: ...out temperature When heat pump lockout mode has been set the auto backup function will automatically be set This will allow the auxiliary or secondary heat source to be automatically energized in the event of a system failure Error codes capable of auto backup are listed in the table below Please be aware that the error codes that are not listed do not auto backup in order to protect the unit Heat...

Page 229: ...mpressor surface temperature thermistor R14T abnormality J3 Accumulator inlet thermistor R10T abnormality J5 Heat exchanging deicer thermistor R11T and heat exchanger gas pipe thermistor R8T R9T abnormality J6 Receiver inlet thermistor R3T and subcooling heat exchanger liquid pipe thermistor R7T abnormality J7 Heat exchanger liquid pipe thermistor R15T R4T R5T abnormality J8 Subcooling heat exchan...

Page 230: ...A1P ON OFF 1 2 3 4 F2 B C A F2 F1 F1 F2 F1 Outdoor unit TOIN DUNIT TOOUT DUNIT F1 F2 F1 F2 F1 F2 F1 F2 IN D OUT D BS REMOTE CONTROLLER Branch Selector unit A F1 F2 F1 F2 IN D OUT D BS Branch Selector unit B COOL HEAT selector Branch wiring Use 2 core wires There is no polarity B C A REMOTE CONTROLLER COOL HEAT selector Cool heat selector remote control wiring Use 3 core wires Keep in mind the pola...

Page 231: ...mal operation mode B When night time low noise operation is carried out automatically External control adaptor for outdoor unit is not required 1 While in setting mode 2 select a night time low noise operation level for the item 2 22 2 If necessary while in setting mode 2 select a starting time of night time low noise operation i e 8 00 PM 10 00 PM or 12 00 AM for the item 2 26 Use the starting ti...

Page 232: ...peration level setting Factory setting is OFF Night time Operation sound level set with night time low noise operation setting 6 00 AM 8 00 PM 10 00 PM 12 00 AM 7 00 AM 8 00 AM Set with night time low noise operation end setting Factory setting is 8 00 AM Set with night time low noise operation start setting Factory setting is 10 00 PM Operation sound Rated Level 1 Level 2 Level 3 Time set with ni...

Page 233: ...e figure above 2 While in setting mode 2 set the item 2 12 External low noise or demand setting to ON 3 If necessary while in setting mode 2 select a demand 1 level for the item 2 30 Description of setting Setting procedure Setting item Description External control adaptor for outdoor unit Outdoor unit PCB Demand 1 Operate with power of 70 or less of the rating Short circuit between 1 and C of the...

Page 234: ...tor for outdoor unit as shown below To other external control adaptor for outdoor unit Outdoor wiring indicated by dotted line 1 2 3 C Demand Low noise Power consumption Rated 40 Forced thermostat OFF Fan operation 70 Demand level 1 instructing Power consumption set by Demand 1 level setting Demand level 2 instructing Demand level 3 instructing The power consumption during the demand level 1 instr...

Page 235: ... match the LED display with the Setting No you want 3 Press the RETURN BS3 button once and the present setting content is displayed Press the SET BS2 button several times and match the LED display with the setting content you want 4 Press the RETURN BS3 button two times Returns to 1 5 Press the MODE BS1 button once Returns to the setting mode 1 and H1P turns OFF The power consumption set with Dema...

Page 236: ...nts Cautions or warnings Are all units securely installed z Dangerous for turning over during storm z Possible damage to pipe connections Is the ground wire installed according to the applicable local standard Dangerous if electric leakage occurs Are all air inlets and outlets of the indoor and outdoor units unobstructed z Poor cooling z Poor heating Does the drain flow out smoothly Water leakage ...

Page 237: ... stopped if the compressor is running at this time After that the gas furnace will run in tens of seconds Tens of minutes might well be needed to stop compressor if the outdoor unit is particular operation 7 The gas furnace will operate with selected heat stage 8 This test operation will stop automatically after 30 minutes or when the remote controller is turned off Note Heat pump operation is not...

Page 238: ...64 3 11 Low Indoor Airflow 265 3 12 Swing Flap Motor Abnormality 266 3 13 Power Supply Voltage Abnormality 268 3 14 Blower Motor Stops for Over Under Voltage 269 3 15 Electronic Expansion Valve Coil Abnormality Dust Clogging 270 3 16 Gas Furnace Abnormality 271 3 17 Drain Level above Limit 272 3 18 Capacity Determination Device Abnormality 273 3 19 Transmission Abnormality between Indoor Unit Cont...

Page 239: ... Overcurrent 327 3 55 Compressor Startup Abnormality 329 3 56 Transmission Error between Inverter PCB and Outdoor Unit Main PCB 331 3 57 Power Supply Voltage Imbalance 333 3 58 Reactor Surface Thermistor Abnormality 335 3 59 Inverter Radiation Fin Temperature Abnormality 336 3 60 Field Setting after Replacing Outdoor Unit Main PCB Abnormality or Combination of PCB Abnormality 338 3 61 Refrigerant ...

Page 240: ...373 4 Check 374 4 1 High Pressure Check 374 4 2 Low Pressure Check 375 4 3 Superheat Operation Check 376 4 4 Power Transistor Check 377 4 5 Refrigerant Overcharge Check 382 4 6 Refrigerant Shortage Check 383 4 7 Vacuuming and Dehydration Procedure 384 4 8 Thermistor Check 385 4 9 Pressure Sensor Check 388 4 10 Broken Wire Check of the Relay Wires 389 4 11 Fan Motor Connector Check Power Supply Cab...

Page 241: ...aying in a room The model must be selected to match the air conditioning load In cooling Too many heat sources e g OA equipment located in a room 4 The system does not operate The system stops and immediately restarts operation If the operation lamp on the remote controller turns ON the system will be normal These symptoms indicate that the system is controlled so as not to put unreasonable loads ...

Page 242: ...ccording to the setting Even pressing the airflow rate setting button makes no changes in the airflow rate In heating operation when the room temperature reaches the set degree the outdoor unit will stop while the indoor unit is brought to fan LL operation so that no one gets cold air Furthermore if fan operation mode is selected when other indoor unit is in heating operation the system will be br...

Page 243: ... operating sounds changes The reason is that the compressor changes the operating frequency Normal operation 12 Dust comes out from the system Dust comes out from the system when it restarts after the stop for an extended period of time Dust which has deposited on the inside of indoor unit is blown out from the system Normal operation 13 Odors come out from the system In operation Odors of room ci...

Page 244: ...eration while the compressor is during operation or under stop control or right after defrost IN or defrost OUT Wait until the operation becomes stable 2 Operation does not switch from heat pump to gas furnace in spite of low room temperature Operation does not switch from gas furnace to heat pump even though the room temperature is nearing the set temperature This function is performed only with ...

Page 245: ...e range P0 P3 8 When using airflow block the airflow block will be routinely lifted become horizontal during heating operation No defect Set louver to horizontal P0 during thermostat OFF 9 Although people are not present the infrared presence sensor detects human presence Check if there are any objects that generate temperature change when moving For example An electric heater with swing function ...

Page 246: ...ning 2 Taking corrective action Screen Operation lamp Operation Status Display Abnormal shutdown The system stops operating The operation lamp green starts to blink The message Error Push Menu button will blink at the bottom of the screen Warning The system continues its operation The operation lamp green remains on The message Warning Push Menu button will blink at the bottom of the screen Press ...

Page 247: ...e operation in step 4 until you hear a continuous beep This continuous beep indicates that the error code is confirmed Continuous beep There is no abnormality 3 Press MODE button The left 0 upper digit indication of the error code blinks 4 Press UP button or DOWN button to change the error code upper digit until the receiver of the indoor unit starts to beep The upper digit of the code changes as ...

Page 248: ...returns to the normal mode 0 1 2 3 4 5 6 7 8 9 A H C J E F UP button DOWN button If no button is pressed for 1 minute equipment returns to normal mode 3 Press MODE button The upper digit blinks Normal mode 1 Press INSPECTION TEST button to enter inspection mode 7 When MODE button is pressed or no button is pressed for 1 minute equipment returns to normal mode 6 Change the lower digit with UP butto...

Page 249: ... error 276 Climate Talk communication error 277 C4 l Heat exchanger liquid pipe thermistor abnormality 278 C5 l Heat exchanger gas pipe thermistor abnormality 278 C6 l Combination error between indoor unit control PCB and fan PCB 279 Blower motor HP mismatch 280 Indoor blower does not have required parameters to function 281 C9 2 l Suction air thermistor abnormality 278 Remote sensor abnormality 2...

Page 250: ...mpressor overcurrent 327 L9 l Compressor startup abnormality 329 LC l Transmission error between inverter PCB and outdoor unit main PCB 331 P1 l Power supply voltage imbalance 333 P3 l Reactor surface thermistor abnormality 335 P4 1 l Inverter radiation fin temperature abnormality 336 PJ l Field setting after replacing outdoor unit main PCB abnormality or combination of PCB abnormality 338 System ...

Page 251: ...the brush unit S shaped pipe and dust box Furthermore check for any stains of the light receiving and emitting parts of the infrared unit AH 06 Air filter rotation error when the self cleaning decoration panel is mounted Check for anything getting in the way of rotating the filter e g the filter comes off or the drive gear is clogged with foreign matter AH 07 Damper rotation error when the self cl...

Page 252: ...ual and make a diagnosis of the relevant unit based on the Error code shown to the left E3 03 E3 04 Activation of high pressure switch S1PH Slave 1 E3 05 E3 06 Activation of high pressure switch S1PH Slave 2 E3 07 High pressure standby E3 latch error System integrated E3 13 Liquid stop valve check error Master E3 14 Liquid stop valve check error Slave 1 E3 15 Liquid stop valve check error Slave 2 ...

Page 253: ...09 Fan motor M1F IPM error Master E7 10 Fan motor M2F IPM error Master E7 13 Fan motor M1F lock Slave 1 E7 14 Fan motor M2F lock Slave 1 E7 17 Fan motor M1F momentary overcurrent Slave 1 E7 18 Fan motor M2F momentary overcurrent Slave 1 E7 21 Fan motor M1F IPM error Slave 1 E7 22 Fan motor M2F IPM error Slave 1 E7 25 Fan motor M1F lock Slave 2 E7 26 Fan motor M2F lock Slave 2 E7 29 Fan motor M1F m...

Page 254: ...tronic expansion valve coil Y1E Slave 1 E9 22 Defective electronic expansion valve coil Y1E Slave 2 E9 23 Defective electronic expansion valve coil Y2E Master E9 24 Defective electronic expansion valve coil Y2E Slave 1 E9 25 Defective electronic expansion valve coil Y2E Slave 2 E9 26 Electronic expansion valve coil Y4E error Master E9 27 Electronic expansion valve coil Y4E error Slave 1 E9 28 Elec...

Page 255: ...pansion valve of the relevant unit based on the Error code shown to the left F9 02 Electronic expansion valve error suction pipe F9 05 Electronic expansion valve error subcooling H3 02 Harness abnormality Main inverter PCB Master unit Refer to the H3 flowchart of each manual and make a diagnosis of the relevant unit based on the Error code shown to the left H3 04 Harness abnormality Main inverter ...

Page 256: ...ive compressor body thermistor R14T Open Slave 1 J3 50 Defective compressor body thermistor R14T Short Slave 1 J3 51 Defective compressor body thermistor R14T Open Slave 2 J3 52 Defective compressor body thermistor R14T Short Slave 2 J3 56 Discharge pipe warning Master J3 57 Discharge pipe warning Slave 1 J3 58 Discharge pipe warning Slave 2 J5 01 Defective compressor suction thermistor R12T Maste...

Page 257: ...ve 1 J6 16 Error detection of heat exchanger gas upper thermistor R8T Slave 2 J6 17 Error detection of heat exchanger gas lower thermistor R9T Master J6 18 Error detection of heat exchanger gas lower thermistor R9T Slave 1 J6 19 Error detection of heat exchanger gas lower thermistor R9T Slave 2 J7 01 Defective receiver inlet thermistor R3T Master Refer to the J7 flowchart of each manual and make a...

Page 258: ...ror detection of subcooling heat exchanger gas pipe thermistor R6T Slave 1 J9 10 Error detection of subcooling heat exchanger gas pipe thermistor R6T Slave 2 J9 11 Receiver gas purge thermistor R13T Master J9 12 Receiver gas purge thermistor R13T Slave 1 J9 13 Receiver gas purge thermistor R13T Slave 2 JA 06 Defective high pressure sensor S1NPH Open Master Refer to the JA flowchart of each manual ...

Page 259: ...or 2 Compressor M1C Slave 2 L1 14 IGBT error Compressor M1C Slave 2 L1 15 Jumper settings error Slave 1 L1 16 Jumper settings error Slave 2 L1 21 DIP switch settings error Master L1 26 DIP switch settings error Slave 1 L1 28 Defective fan PCB EEPROM Fan M1F Master L1 29 Defective fan PCB EEPROM Fan M2F Master L1 32 Defective fan PCB EEPROM Fan M1F Slave 1 L1 33 Defective fan PCB EEPROM Fan M2F Sla...

Page 260: ...aster L4 12 Inverter radiation fin temperature rise abnormality Master L4 13 Inverter radiation fin temperature rise abnormality Slave 1 L4 14 Inverter radiation fin temperature rise abnormality Slave 2 L4 18 Radiation fin temperature rise Fan M1F Slave 1 L4 19 Radiation fin temperature rise Fan M2F Slave 1 L4 20 Radiation fin temperature rise Fan M1F Slave 2 L4 21 Radiation fin temperature rise F...

Page 261: ...elevant unit based on the Error code shown to the left P1 02 Inverter 1 power supply unbalanced voltage Slave 1 P1 03 Inverter 1 power supply unbalanced voltage Slave 2 P3 01 Defective reactor surface thermistor 1 Master Inverter PCB 1 Refer to the P3 flowchart of each manual and make a diagnosis of the relevant unit based on the Error code shown to the left P3 02 Defective reactor surface thermis...

Page 262: ...Follow the U2 flowchart Open phase of power supply The wiring between power supply and inverter PCB may be disconnected Check that power supply is connected to terminal block terminal block is connected to PCB without broken wire or disconnection and reactor wiring is secured If no abnormality is found follow the U2 flowchart Defective capacitor in main circuit P N on the inverter PCB electrolytic...

Page 263: ... each manual and make a diagnosis of the relevant unit based on the Error code shown to the left UA 17 Connection of excessive indoor units Refer to the UA flowchart of each manual and make a diagnosis of the relevant unit based on the Error code shown to the left UA 18 Connection of wrong models of indoor units UA 20 Improper combination of outdoor units UA 21 Connection error UA 23 Connection of...

Page 264: ... Causes Activation of external protection device Improper field setting Defective indoor unit control PCB Troubleshooting ON OFF input from outdoor mode No 12 first code No 1 has been set to external protection device input second code No 03 by remote controller Check the setting state of the external ON OFF input by remote controller External protection device is connected to T1 and T2 of the ind...

Page 265: ...wn 24 VAC power is not supplied to TH2 and TR2 terminals FXTQ TA or R and C terminals CXTQ TA on the indoor unit PCB Troubleshooting Fuse F1U is blown 24 VAC power is supplied to TH2 and TR2 terminals FXTQ TA or R and C terminals CXTQ TA External protection device is connected to TB4 and TB5 of the indoor unit terminal The external protection device is opened Replace the indoor unit PCB Confirm th...

Page 266: ...latile memory Maintains memory contents even when the power supply is turned OFF Supposed Causes Defective indoor unit control PCB External factor Noise etc Troubleshooting Turn the power supply OFF then the power ON again Does the system return to normal YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace the indoor unit c...

Page 267: ...ectors or parts may be damaged Replace the float switch S1L Modify the float switch s connection and turn ON again Connect the drain pump and turn ON again Connect either a short circuit connector or float switch and turn ON again YES YES YES YES YES Replace the indoor unit control PCB A1P Loose the connection of connector NO NO NO YES NO NO YES NO NO Provide 208 230 V power supply YES NO Is power...

Page 268: ...en the power supply is reset for the indoor unit The voltage of drain pump terminals 2 is in accordance to the criteria 3 within 5 minutes of resetting the power supply A Model 1 Float switch S1L short circuit connector 2 Drain pump M1P connector 3 Drain pump M1P voltage FXFQ T X15A X10A 13 VDC FXZQ TA X15A X102A 13 VDC FXUQ P X15A X25A 13 VDC FXEQ P X15A X25A 13 VDC FXDQ M X8A X25A 220 240 VAC FX...

Page 269: ...ot increase Supposed Causes Broken wires in short circuit of or disconnection of connectors from the fan motor harness Defective fan motor Broken wires or defective insulation Abnormal signal output from the fan motor defective circuit Defective indoor unit control PCB Instantaneous disturbance in the power supply voltage Fan motor lock Due to motor or external causes The fan does not rotate due t...

Page 270: ...matter around the fan YES Is the resistance between the pins more than the judgment criteria Disconnect the connector from the fan motor and then make measurement of resistance between pins Turn OFF the power supply and then wait for a period of 10 minutes Replace the indoor unit control PCB A1P Replace the indoor fan motor M1F Replace the indoor fan motor M1F Caution Be sure to turn off the power...

Page 271: ...Supposed Causes Defective indoor fan motor Broken wires Defective contact Troubleshooting Refer to page 390 NO YES YES Is the X4A connector securely connected NO Is the power of 12 VDC supplied between the Pins 1 and 3 when the X4A is disconnected and the power supply turns ON Replace the indoor unit control PCB A1P Properly connect the connectors At this time check for any defective connector con...

Page 272: ... position signal of the fan motor Error from the current flow on the fan PCB when the fan motor starting operation Error Decision Conditions An overcurrent flows The rotation speed is less than a certain level for 6 seconds A position error in the fan rotor continues for 5 seconds or more Supposed Causes Clogging of a foreign matter Disconnection of the fan motor connectors X1A and X2A Disconnecti...

Page 273: ...ce the indoor fan motor M1F YES NO YES The fan can be moved lightly by hand after the fan motor connector of the fan PCB A2P is removed Replace the indoor fan motor M1F NO YES NO YES There is a foreign matter around the fan The resistance between the power wire terminals of the fan motor and motor frame metal part is 1 MΩ or below Turn OFF the power and wait for 10 minutes A Remove the power wire ...

Page 274: ...als are short circuited Replace the indoor fan motor M1F YES Replace the fan PCB A2P YES NO The resistance among U V and W are unbalanced or short circuited NO The HAP lamp of the indoor unit control PCB A1P blinks and the HAP lamp of the fan PCB A2P is OFF Turn ON the power Replace the indoor fan motor M1F A Remove the signal connector from the fan motor and check the resistance CHECK 17 CHECK 16...

Page 275: ...ation Supposed Causes Defective power supply for the indoor fan motor Clogged drain piping Activation of the indoor unit safety device Defective contact in the fan wiring circuit Troubleshooting Properly connect the cable NO YES YES Is the power supply cable of the indoor fan properly connected NO Is the fan normally running Restart the fan Replace the indoor unit control PCB A1P It is supposed th...

Page 276: ...intervals using the feedback of the fan motor Performs rotation sampling 720 times takes approximately one hour and if the rotation speed falls below 50 rpm over 100 times it is deemed abnormal operation When the sampling reaches 720 times the counted number will be cleared and the 720 times sampling restarts If during this the rotation command is stopped the 5 second interval check is halted but ...

Page 277: ...ation shows Motor Lost Control or Current Trip status it will be deemed a MOTOR TRIP abnormal operation The system stops operating Error Reset Conditions If the indoor unit stops receiving abnormal information the error will be cleared Supposed Causes Fan or motor obstruction Blocked filters Power interruption low voltage Incorrect wiring Blockage in the airflow ductwork or ductwork undersized Hig...

Page 278: ...ing this the rotation command is stopped the 5 second interval check is halted but the counted number will be kept When the rotation command is restarted the checks will resume Error Reset Conditions Determining successive abnormalities Checks the rotation speed at 5 second intervals using the feedback of the fan motor If that figure exceeds 150 rpm even once the error will be cleared Determining ...

Page 279: ...ed with a swing flap function The swing motor works when the power supply is turned OFF and then restart The relay cable is short circuited or disconnected Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Provide 208 230 V power supply YES NO The connector is connected to the indoor unit control PCB 1 Go to the next page Replace the...

Page 280: ...FXAQ P X36A M1S Replace the power supply relay cable Replace the defective swing motor 2 Take the flap cam mechanism apart reassemble and turn ON again YES NO YES NO The relay cable has no continuity When the airflow direction flap cam mechanism is disconnected from the swing motor operation is normal when turned ON again A ...

Page 281: ...ctive wiring Instantaneous power failure others Troubleshooting Check the condition of the power supply 1 Check if power supply voltage is 208 230 V 10 2 Check if there is power open phase or defective wiring 3 Check if power supply voltage unbalance is within 6 V YES There are problems on the condition of power supply described above Caution Be sure to turn off the power switch before connecting ...

Page 282: ... Decision Conditions If the information shows Over Under Voltage status it will be deemed a MOTOR VOLTS abnormal operation Error Reset Conditions If the information is normal the error will be cleared Supposed Causes High AC line voltage to indoor blower motor Low AC line voltage to indoor blower motor Incorrect wiring Corrective Actions Verify line voltage to indoor blower motor is within the ran...

Page 283: ...on air R2T temperature of liquid pipe of heat exchanger Supposed Causes Defective electronic expansion valve coil Defective indoor unit control PCB Defective relay cables Troubleshooting Refer to page 393 NO YES Power is supplied NO Electronic expansion valve is connected to X7A of indoor unit control PCB NO Check of electronic expansion valve coil indicates normal NO YES YES YES Relay cables shor...

Page 284: ...ode of the gas furnace Refer to the gas furnace manual for details Troubleshooting Note 1 In some cases of gas furnace abnormality regarding gas combustion once an error occurs display indication of AA 03 is retained even after the gas furnace recovered from the error to notify the occurrence of the error The error indication disappears if you execute gas furnace combustion once or reset the indoo...

Page 285: ...ompressor is not in operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defective drain pipe upward slope etc Defective indoor unit control PCB Troubleshooting Modify the drain piping YES YES NO Field drain piping has a defect such as upward sloping NO A humidifier unit optional accessory is installed on the indoor unit ...

Page 286: ...capacity code is not saved to the PCB and the capacity setting adaptor is not connected When a capacity that does not exist for that unit is set Supposed Causes The capacity setting adaptor was not installed Defective indoor unit control PCB Troubleshooting NO NO YES The indoor unit control PCB was replaced with a spare PCB YES The capacity setting adaptor need to be installed when replacing the P...

Page 287: ...CB A1P Defective fan PCB A2P External factor such as instantaneous power failure Troubleshooting Under above field setting mode second code No is 01 NO NO YES Replace the fan PCB A2P YES YES Is the connector between indoor unit control PCB A1P and fan PCB A2P accurately connected 1 NO C1 is displayed again Confirm the condition of transmission on indoor unit control PCB using field setting mode 2 ...

Page 288: ...move the connector X70A of indoor unit control PCB A1P 2 Short circuit X70A 3 After turning ON the power check below numbers under field setting from remote controller Confirmation Second code No at the condition of first code No 21 on mode No 41 After confirmation turn OFF the power take off the short circuit and connect X70A back to original condition Determination 01 Normal Other than 01 Transm...

Page 289: ...ssage and determined as such by the indoor unit the indoor unit will execute a retry If everything fails for 5 seconds it is deemed to be a transmission abnormality Error Reset Conditions If the indoor unit receives even a single normal response message from the fan motor the error will be cleared Supposed Causes Incorrect or loose wiring Power interruption low voltage Corrective Actions Check wir...

Page 290: ...sed Causes Disconnection of the communication wire between the CXTQ TA and the gas furnace Power supply to the gas furnace is cut Troubleshooting NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 1 and 2 terminals of the gas furnace and the CXTQ TA are connected each other NO YES YES YES NO The communication wire to the gas furnac...

Page 291: ...TQ TA and CXTQ TA models Refer to page 385 Is the thermistor normal Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Remove the thermistor from the indoor unit control PCB Then insert the connector again Remove the thermistor from the indoor unit control PCB and then make resistance measurement of the thermistor using a multimeter N...

Page 292: ...apacity setting adaptor Field setting error Troubleshooting NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Was indoor unit control PCB A1P replaced with a spare PCB YES YES YES NO NO Was correct capacity setting adaptor installed when replacing it with a spare PCB After establishing transmission for indoor and outdoor units dia...

Page 293: ...tion on the manufacturer ID and output of the fan motor when initializing the fan motor If those figures are not the values recognized by the indoor unit it will be deemed abnormal operation If deemed abnormal operation it will keep retrying until the figures match Error Reset Conditions If the manufacturer ID and output match the error will be cleared Supposed Causes Incorrect size motor Indoor u...

Page 294: ...ded among the periodic control status information Error is issued when the information shows abnormality Error Decision Conditions If the parameter information shows abnormality it will be deemed abnormal operation At that point parameter settings when initializing the fan motor will be implemented from the beginning Error Reset Conditions If the parameter information is normal the error will be c...

Page 295: ...ting Note 1 Connector and indoor unit control PCB Refer to page 385 Is the optional remote sensor is installed Field setting 10 20 2 is set to 03 Connector is connected to the indoor unit control PCB 1 Resistance is normal when measured after disconnecting the sensor from the indoor unit control PCB Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts...

Page 296: ... the check mode 2 To display the code the INSPECTION TEST button of the remote controller must be pressed and held in the normal mode 3 If CC is displayed even after replacing the humidity sensor PCB assy A2P and taking the steps 1 and 2 replace the indoor unit control PCB A1P Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged YES NO ...

Page 297: ...nsor connector CE 01 Defective infrared floor sensor Temperature compensation circuit disconnection CE 02 Defective infrared floor sensor Temperature compensation short circuit CE 03 Defective infrared floor sensor element CE 04 Troubleshooting See diagnosis procedure 1 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Error code CE ...

Page 298: ...and address data No 22 25 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared presence sensor PCB A4P and the connector 1 normal NO YES YES Is the connection of the sensor connector normal Normal NO Displays 15 by the above verification method Normal NO Displays CE 01 again or 15 for sensor and address data Replace the sensor Mo...

Page 299: ...or and address data No 26 Connect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared floor sensor PCB A3P and the connector 1 normal NO YES YES Is the connection of the sensor connector normal Normal NO Displays by the above verification method Normal NO Displays CE 02 again or for sensor and address data Replace the sensor Model Conne...

Page 300: ... sensor output refer to sensor and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 03 again or for sensor and address data Replace the sensor Connect the connector correctly Connect the connector correctly Normal Normal Is the connection of the connector on infrared floor sensor PCB A3P and the connector 1 normal Model Conne...

Page 301: ... sensor output refer to sensor and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 04 again or for sensor and address data Replace the sensor Connect the connector correctly Connect the connector correctly Normal Normal Is the connection of the connector on infrared floor sensor PCB A3P and the connector 1 normal Model Conne...

Page 302: ...ting Note 1 How to delete the history of error codes Press the ON OFF button for 4 seconds or more while the error code is displayed in the inspection mode Clear the error code history 1 While in inspection mode press and hold the ON OFF button for a period of 4 seconds or more YES YES Is CJ displayed on the remote controller Is the field setting 10 20 2 correct YES YES Is a remote controller with...

Page 303: ...tween the indoor unit and the outdoor unit are not normal Supposed Causes Defective outdoor unit main PCB A1P Defective connection communication line between indoor and outdoor units Troubleshooting Return to normal YES External factor other than error for example noise etc Connect the communication line correctly Replace the outdoor unit main PCB A1P NO NO Check if inside outdoor relay wires of o...

Page 304: ... YES NO NO Is wiring passing through the current sensor T1A proper Insulation failure of compressor Insulation failure of component except compressor Pass proper wiring through the sensor Turn OFF the power supply and then disconnect compressor lead wire Reinstall wiring and then turn ON the power supply again NO Replace the compressor M1C YES Replace the relevant component YES Normal Continue ope...

Page 305: ...nection Defective outdoor unit main PCB Troubleshooting Sub code 06 08 NO YES YES Is the system reset to normal Is X101A connected The error is considered to have resulted from external factors other than failures e g noise Turn OFF the power supply and then disconnect compressor leads YES Properly connect the connector NO Confirm if there is a leakage with a Megger tester Replace the outdoor unit...

Page 306: ...h pressure sensor Troubleshooting NO YES YES Replace the high pressure switch S1PH Remedy defective points Replace the high pressure sensor S1NPH YES Are the above 3 points OK Does the error E3 recur NO Is the operating pressure of the high pressure switch normal 4 0 MPa 580 psi NO YES Are the characteristics of the high pressure sensor normal 1 NO 1 Mount a pressure gauge on the high pressure ser...

Page 307: ... page 388 Replace the outdoor unit main PCB A1P NO YES Check if the high pressure value and the actual value measured by pressure sensor are the same The high pressure sensor is normal and outdoor unit main PCB is also normal The high pressure has really become high CHECK 1 Eliminate factors that cause the high pressure to rise Compare the high pressure value checked with the Service Checker and t...

Page 308: ...ert it to pressure Refer to page 375 Refer to page 388 YES NO NO YES Are the characteristics of the low pressure sensor normal 1 NO YES 1 Mount a pressure gauge on the low pressure service port 2 Reset the operation using the remote controller and then restart the operation Is the stop valve open The low pressure sensor is normal and the outdoor unit main PCB is also normal The low pressure has re...

Page 309: ...erential pressure 0 5 MPa 72 5 psi or more UVW connection error Defective inverter PCB Stop valve is not opened Troubleshooting Make proper wire connections Make proper wire connections NO NO NO NO YES YES YES YES Power OFF Is the connection line of the compressor normal Are wire connections made to phases U V and W in the proper order and manner Are wire connections made according to the Wiring D...

Page 310: ...uit work Pressure equalization failure may have occurred Check for the refrigerant system YES YES NO Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P NO The error recurs at startup Continue operation The error could have resulted from instantaneous power failure A Continue operation Replace the compressor CHECK 4 Is the power transistor normal Replace the inverter PCB This is ...

Page 311: ...em will return an alarm if there is any operational unit other than that applicable to E6 or determine to be error if not Supposed Causes Defective compressor Defective high pressure sensor Defective low pressure sensor Defective outdoor unit main PCB Defective inverter PCB Troubleshooting NO YES Are the characteristics of the high pressure sensor normal 1 1 Mount a pressure gauge on the high and ...

Page 312: ...nnector block to convert it to pressure Refer to page 377 Refer to page 388 NO YES Are the high pressure and low pressure checked by the service checker the same as the actual measured values of the high and low pressure sensors Replace the outdoor unit main PCB A1P NO Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P CHECK 4 Is the power transistor normal YES Replace the compr...

Page 313: ... and the PCB Fan does not rotate due to foreign matter caught in it Clearing condition fan motor performs normal operation for a period of 5 minutes Troubleshooting There are foreign matter around the applicable fan Remove the foreign matter YES Check for the connections of all fan motor connectors NO Turn OFF the power supply and then wait for a period of 10 minutes Some connectors are disconnect...

Page 314: ...sistance between U V W phases of the fan motor power supply cable has lost balance or short circuit is caused between U V W phases Check for the connector power supply cable of the fan motor NO CHECK 16 Replace the fan PCB A4P A5P YES The HAP lamp on the inverter PCB blinks but does not blink on the fan PCB Replace the relevant fan motor M1F M2F YES Signal cable has caused short circuit between Vc...

Page 315: ...here are foreign matter around the applicable fan Remove the foreign matter YES Check for the connections of all fan motor connectors 1 NO Turn OFF the power supply and then wait for a period of 10 minutes Some connectors are disconnected Insert the connector YES NO NO There is a relay connection error Correct the connection of the relay harness YES Caution Be sure to turn off the power switch bef...

Page 316: ...place the relevant fan motor M1F M2F YES NO YES Resistance between U V W phases of the fan motor power supply cable has lost balance or short circuit is caused between U V W phases Check for the connector power supply cable of the fan motor NO CHECK 16 Replace the fan PCB A5P A6P YES The HAP lamp on the fan PCB does not blink Turn ON the power supply to check for the HAP lamps on the fan PCB Repla...

Page 317: ... Return to normal Investigate external causes other than failures e g noise YES NO Connector for the electronic expansion valve of the outdoor unit main PCB A1P is connected Properly and securely connect the connector NO YES Replace the electronic expansion valve NO Replace the outdoor unit main PCB A1P YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors ...

Page 318: ...normally high i e 135 C 275 F or more When discharge pipe temperature sharply rises remains at 120 C 248 F or more for a period of consecutive 10 minutes When compressor surface temperature becomes abnormally high i e 120 C 248 F or more When compressor surface temperature sharply rises remains at 115 C 239 F or more for a period of consecutive 10 minutes Supposed Causes Abnormal discharge pipe te...

Page 319: ...ection with the outdoor unit main PCB is also normal The discharge pipe temperature or compressor surface temperature has really become high CHECK 3 Eliminate the causes of superheat operation Service Checker Connect the Service Checker and then make a comparison between discharge pipe temperature or compressor surface temperature and low pressure checked by the Service Checker and the measurement...

Page 320: ... Error Decision Conditions When the following wet state continues for a period of 90 minutes an alert is issued An error is defined for 120 minutes Wet state in outdoor units When the following wet state continues for a period of 45 minutes an alert is issued Wet state in some of indoor units Supposed Causes Defective suction pipe thermistor Defective compressor suction thermistor Defective discha...

Page 321: ... Replace the indoor unit electronic expansion valve Replace the relevant thermistor YES YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Are the characteristics of the suction pipe thermistor R10T and the compressor suction thermistor R12T normal NO Replace the discharge pipe thermistor YES NO Replace the high pressure sensor S1...

Page 322: ...rigerant overcharged Disconnection of outdoor air thermistor Disconnection of heat exchanger deicer thermistor Disconnection of liquid pipe temperature thermistor Troubleshooting Refer to page 385 Check for the conditions of mounting of the temperature sensors of the outdoor air thermistor the heat exchanger thermistor and liquid pipe thermistor to the piping Disconnect the outdoor air thermistor ...

Page 323: ...lve subject to error code F9 Refer to page 393 While in monitor mode identify an electronic expansion valve subject to the Error Code F9 1 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged YES Return to normal Turn power supply OFF and turn power supply ON again Replace the electronic expansion valve coil Replace the Branch Selector ...

Page 324: ...or is not running Supposed Causes Defective connection of jumpers between PCB Defective outdoor unit main PCB A1P Defective inverter PCB Troubleshooting Check for the transmission conditions of the following harnesses 1 X6A Inverter PCB X28A A1P 2 X63A Inverter PCB X40A A1P Replace the outdoor unit main PCB A1P Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P YES NO YES Comple...

Page 325: ...er PCB A3P Troubleshooting Refer to page 391 Properly connect the connector NO YES Replace the fan motor M1F M2F NO YES Turn OFF the power supply Check for fan motor applicable to the error code H7 while in monitor mode Sub code H7 01 05 Fan motor 1 M1F Master Slave 1 H7 02 06 Fan motor 2 M2F Master Slave 1 Check for the connector of the fan motor Replace the fan PCB A4P A5P Caution Be sure to tur...

Page 326: ... motor M1F M2F NO YES Check for fan PCB applicable to the error code H7 while in monitor mode H7 21 23 25 Fan PCB A6P Master Slave 1 Slave 2 H7 22 24 26 Fan PCB A5P Master Slave 1 Slave 2 Replace the fan PCB 1 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Is the connector of relevant fan motor normally connected 1 Resistance betw...

Page 327: ...ring disconnection or short circuit in it Supposed Causes Defective connection of thermistor Defective thermistor Defective outdoor unit main PCB Troubleshooting Thermistor is connected to the connector Replace the outdoor unit main PCB A1P Connect the connector and turn ON again NO NO Replace the thermistor 1 YES YES Caution Be sure to turn off the power switch before connecting or disconnecting ...

Page 328: ...roup connector Suction pipe thermistor R10T X29A Group connector J6 Heat exchanger deicer thermistor R11T X15A Group connector Heat exchanger gas pipe thermistor R8T R9T X29A Group connector J7 Receiver inlet thermistor R3T X30A Group connector Subcooling heat exchanger liquid pipe thermistor R7T Subcooling injection thermistor R16T X15A Group connector J8 Heat exchanger liquid pipe thermistor R4T...

Page 329: ... 388 Are the characteristics of the high pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the high pressure sensor S1NPH Replace the outdoor unit main PCB A1P NO Is the PCB detection pressure normal Make a comparison between data on pressure checked by the Service Checker and the voltage characteristics Replace the outdoor unit main PCB A1P NO Are...

Page 330: ...88 Are the characteristics of the low pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the low pressure sensor S1NPL Replace the outdoor unit main PCB A1P NO Is the PCB detection pressure normal Make a comparison between data on pressure checked by the Service Checker and the voltage characteristics Replace the outdoor unit main PCB A1P NO Are the...

Page 331: ...ected during the output of waveform before compressor startup Detect according to current value detected with the current sensor during synchronous operation for startup Error Decision Conditions When overcurrent flows during the output of waveform When the current sensor error during synchronous operation When IPM error occurs Supposed Causes Inverter PCB IPM failure Current sensor failure Drive ...

Page 332: ...xternal factors other than failures e g external noise or thunder YES Replace the compressor and the inverter PCB together 1 Replace the inverter PCB 1 NO NO YES Replace the inverter PCB 1 and the fan PCB 2 Replace the inverter 1 PCB NO YES Turn OFF the power supply once and then turn it ON again NO YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or p...

Page 333: ...detection circuit on the outdoor unit main PCB Supposed Causes Defective wiring Defective outdoor unit main PCB Troubleshooting Error recurs after turning OFF the power and ON again Any disconnection of connectors loose contact or wiring disconnection in the transmission wirings to the outdoor unit main PCB NO YES YES NO Temporary problem Correct any fault Replace the outdoor unit main PCB A1P Cau...

Page 334: ...actor surface thermistor is more than the specified temperature Supposed Causes Defective connection of harness Defective reactor surface thermistor Defective inverter PCB Troubleshooting Is reactor harness connected to the terminal strip correctly Is there wiring disconnection in the reactor surface thermistor NO YES YES NO Connect the harness correctly Replace the thermistor Replace the inverter...

Page 335: ...ll outdoor unit models Method of Error Detection Detect temperature of power module of the inverter PCB Error Decision Conditions Thermistor located inside the power module of the inverter PCB for compressor and fan motor Cooling tube plate poor heat exchange Supposed Causes Cooling tube plate not fixed with screws U0 error Defective inverter PCB High outdoor air temperature Incorrect power supply...

Page 336: ...AYCU A4P Connect to power supply within 10 of the rated voltage NO YES Rectify troubles Normal Power OFF NO NO Check for the cooling conditions of cooling tube used to cool the inverter 1 Is the cooling tube plate fixed with screws 2 Error code U0 is displayed on the Error History screen Reinsert the connectors X7A and X8A for fin thermistors R71T R72T on the inverter PCB A3P correctly YES YES Cau...

Page 337: ...ixed with screws U0 error Defective fan PCB High outdoor air temperature Troubleshooting Continue operation Field factor Radiation fin temperature may have risen due to high outdoor air temperature Turn ON the power supply and then press the ON button Does the error recur Replace the fan PCB A5P A6P YES Rectify troubles Normal NO Check for the cooling conditions of radiation fin used to cool the i...

Page 338: ... inverter PCB Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire connections NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Are the leads of the relevant compressor normal Replace the leads of the relev...

Page 339: ...ue operation Replace the compressor NO YES Replace the inverter PCB YES Restarting the system results in the recurrence of the error Continue operation The error could have resulted from causes such as instantaneous power failure NO Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P NO CHECK 4 Is the power transistor normal Power OFF A CHECK 4 ...

Page 340: ...age Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire connections NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Are the leads of the relevant compressor normal Replace the leads of the relevant compre...

Page 341: ... Connect to power supply within 10 of the rated voltage NO NO Pressure equalization failure Check the refrigerant system Power supply voltage falls within 10 of the rated voltage YES YES Replace the inverter PCB Restarting the system results in the recurrence of the error Continue operation The error could have resulted from causes such as instantaneous power failure NO NO A YES Replace the invert...

Page 342: ...then restart operation NO Are the leads of the compressor disconnected Connect the leads of the compressor YES Is the insulation resistance of the relevant compressor 100 kΩ or more Solve the refrigerant stagnation Power should be supplied for more than 6 hours NO YES YES YES Refrigerant is stagnated The unit is out of power supply for more than 6 hours Solve the refrigerant stagnation Power shoul...

Page 343: ... XAYCU A4P NO YES NO There is wiring disconnection in the compressor Replace the compressor YES Is the insulation resistance of the relevant compressor 100 kΩ or more Refrigerant is stagnated The unit is out of power supply for more than 6 hours Replace the compressor NO Solve the refrigerant stagnation Power should be supplied for more than 6 hours YES CHECK 4 Is the power transistor normal A CHE...

Page 344: ...nit main PCB transmission block Defective noise filter compressor or fan motor External factors e g noise Failure of inverter PCB or fan PCB Troubleshooting Does the inverter PCB part No match that of the spare parts list Replace with a proper PCB NO Properly connect the connector NO YES Replace the fan motor M1F M2F YES NO The insulation resistance of the relevant compressor is not more than 100 ...

Page 345: ...n on the outdoor unit main PCB A1P is blinking Properly connect the connector NO YES Is the connector between the outdoor unit main PCB and the sub PCB securely connected Properly connect the connector X9A X10A on the sub PCB option NO Is the normal operation indication LED on the sub PCB blinking YES NO Replace the outdoor unit main PCB A1P YES The fuse of the noise filter PCB has blown out Conti...

Page 346: ...alance through PCB Error Decision Conditions When power supply voltage imbalance exceeds approximately 12 V Error is not decided while the unit operation is continued P1 will be displayed by pressing the inspection button Supposed Causes Open phase Interphase voltage imbalance Defective capacitor in the main circuit Defective inverter PCB Defective magnetic relay Defective wiring in the main circu...

Page 347: ...ltdown or loose contact of magnetic relay 3 Wiring disconnection in or loose contact of noise filter Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P YES Explanation to users Use the document Notice of Inspection Results attached to spare part Hand the Notice of Inspection Results to user to ask him her to rectify the imbalance Be sure to explain user that power supply voltage...

Page 348: ...causes wiring disconnection or short circuit in it Supposed Causes Defective connection of thermistor Defective reactor surface thermistor Defective inverter PCB Troubleshooting Make measurement of resistance of the radiation fin thermistor Is the resistance of the thermistor normal Turn ON the power supply Does the error recur NO YES YES NO Replace the inverter PCB A3P Replace the inverter PCB A3...

Page 349: ...ed P4 will be displayed by pressing the inspection button Supposed Causes Defective radiation fin temperature thermistor Defective inverter PCB Defective compressor Defective fan motor Troubleshooting Make measurement of resistance of the radiation fin thermistor Is the resistance of the relevant thermistor normal The insulation resistance of the relevant compressor is not more than 100 kΩ The ins...

Page 350: ...nt to open or short circuit Supposed Causes Defective fan PCB Defective fan motor Troubleshooting The insulation resistance of the relevant fan motor is not more than 1 MΩ Turn ON the power supply Does the error recur NO YES NO YES Replace the fan motor M1F M2F Replace the fan PCB REYQ XATJU A4P A5P REYQ XAYDU A4P A5P REYQ XAYCU A5P A6P Continue operation Caution Be sure to turn off the power swit...

Page 351: ...bleshooting Does the inverter PCB part No match that of the spare parts list Does the fan PCB part No match that of the spare parts list Has the DIP switch setting been made properly to replace the outdoor unit main PCB Does the Under Preparation indication lamp H2P on the outdoor unit main PCB turn OFF YES YES NO NO YES YES NO NO Replace with a correct inverter PCB REYQ XATJU A3P REYQ XAYDU A3P R...

Page 352: ...lue 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 Refer to page 375 Refer to page 388 Is the low pressure 0 1 MPa 14 5 psi or less 1 Is the characteristics of low pressure ...

Page 353: ...rse phase or T phase is open phase Supposed Causes Power supply reverse phase T phase open phase Defective outdoor unit main PCB A1P Troubleshooting There is an open phase at the power supply T phase terminal section X1M of the outdoor unit Operation is normal if one phase of power supply line phase is replaced Fix the open phase Requires inspection of field power supply section Reverse phase Coun...

Page 354: ...in PCB A1P Troubleshooting There is an open phase at the power supply T phase terminal section X1M of the outdoor unit Operation is normal if one phase of power supply line phase is replaced Faulty wiring or wiring disconnection between the outdoor unit main PCB A1P and the open phase protection PCB A10P Fix the open phase Requires inspection of field power supply section Reverse phase Countermeas...

Page 355: ... Open phase Defective inverter PCB Defective outdoor unit main PCB Defective compressor Defective main circuit wiring Defective fan motor Defective connection of signal cable Troubleshooting There are some defects in the power supply conditions aforementioned The insulation resistance of the compressor is not more than 100 kΩ NO YES YES Fix the defects Replace the compressor M1C Check for power su...

Page 356: ...ly damaged the compressor and the fan motor M1F M2F may have been damaged Replace the inverter PCB If the inverter PCB gets severely damaged check for the compressor Continue operation The error could have resulted from causes such as instantaneous power failure A Is the power transistor normal YES NO Replace the inverter PCB REYQ XATJU A3P REYQ XAYDU A3P REYQ XAYCU A4P Connect and disconnect the ...

Page 357: ...ode and then go to the following Conduct the test operation The test operation has not been conducted U3 03 Check for the refrigerant piping and then conduct the test operation U3 04 Conduct the test operation due to the premature end of the test operation U3 05 Conduct the test operation due to the premature end of the test operation U3 06 Check for transmission between indoor and outdoor units a...

Page 358: ...ocomputer checks if transmission between indoor and outdoor units is normal Error Decision Conditions Transmission is not carried out normally for a certain amount of time Supposed Causes Open phase in power supply wiring Short circuit in indoor outdoor or outdoor outdoor transmission wiring F1 F2 or wrong wiring Outdoor unit power supply is OFF System address does not match Defective indoor unit ...

Page 359: ...BLINK SEG1 SEG2 SEG3 1 2 Correct the voltage Replace the fuse Press and hold the RETURN BS3 button on the outdoor unit main PCB for a period of 5 seconds or more YES NO YES YES Replace the indoor unit control PCB Press and hold the RETURN BS3 button on the master outdoor unit main PCB for a period of 5 seconds or more The system will not operate for a period of 12 minutes at maximum Modify the tra...

Page 360: ...PCB 2 Test operation was interrupted by the MODE BS1 button YES Check all indoor error indication NO Operate all indoor units YES Do all units display U9 Carry out the diagnosis again after a lapse of 2 minutes or more NO Did 2 minutes or more elapse after U9 is displayed Are the indoor outdoor and outdoor outdoor transmission wirings normal Disconnect the outdoor outdoor transmission wiring Does ...

Page 361: ...setting Control by 2 remote controllers Main Sub setting of both remote controllers is set to Main All indoor unit control PCB microcomputer normal monitors blinking Resets normally when power supply is turned OFF temporarily NO NO NO YES NO Replace the indoor unit control PCB Set one of the remote controllers to Sub turn OFF the power supply temporarily then restart operation The error could be p...

Page 362: ...tions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error of transmission wirings between outdoor unit and external control adaptor for outdoor unit Connection error of transmission wirings between outdoor units Cool Heat selection setting error Cool Heat unified address setting error functional unit external control adaptor for outdoor unit ...

Page 363: ...tor is mounted Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Go to Diagnosis Flowchart 3 Transmission error between master and slave 1 Go to Diagnosis Flowchart 4 Transmission error between master and slave 2 Go to Diagnosis Flowchart 5 Multi system error Go to Diagnosis Flowchart 6 Ma...

Page 364: ...or unit Diagnosis Flowchart 1 Supply power to the outdoor unit Is power supplied to the outdoor unit Is the normal operation monitor LED on the outdoor unit main PCB blinking Is the normal operation monitor LED on the external control adaptor for outdoor unit blinking Transmission error when the external control adaptor is mounted Is the power supply cable of the external control adaptor for outdo...

Page 365: ... error recur when setting Cool Heat selection for the external control adaptor for outdoor unit to IND NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES Replace the outdoor unit main PCB A1P Replace the external control adaptor for outdoor unit main PCB Connect the power supply cable of the external control adaptor for outdoor unit to the 16 VDC power supply line Replace the outdoor unit mai...

Page 366: ...ssion wirings to multi slave 1 have caused wiring disconnection in them or are being disconnected Modify the outdoor unit multi transmission wirings and then reset the power supply Replace the outdoor unit main PCB A1P for multi slave 1 Modify the outdoor unit multi transmission wirings and then reset the power supply Diagnosis Flowchart 3 Transmission error between master and slave 1 Error code S...

Page 367: ...Replace the outdoor unit main PCB A1P Replace the outdoor unit main PCB A1P Rectify the error in the connection of transmission wirings and then reset the power supply One of outdoor unit multi transmission wirings has caused wiring disconnection in it or been disconnected NO The capacity to connect indoor units falls within the specified range Check the capacity to connect indoor units Diagnosis ...

Page 368: ...een main and sub remote controller Connection between sub remote controllers Defective remote controller PCB Troubleshooting Refer to page 90 for Main Sub setting Main Sub setting of both remote controllers are set to Sub Main Sub setting of the remote controller is set to Main Set Main Sub setting of the remote controller to Main Turn OFF the power supply and restart operation Set Main Sub settin...

Page 369: ...s Defective electronic expansion valve of other indoor unit Defective indoor unit control PCB of other indoor unit Improper connection of transmission wiring between indoor and outdoor unit Multi tenant function is ON Troubleshooting U9 has been displayed for 2 minutes or more The outdoor unit main PCB indicated by the error code U9 is normal Check for the indoor unit of other system and then cond...

Page 370: ...n indoor Branch Selector and outdoor units The number of indoor units is out of the allowable range Signal transmission between indoor Branch Selector and outdoor units is abnormal Error Decision Conditions The error decision is made as soon as either of the abnormalities aforementioned is detected Supposed Causes Excess of connected indoor units Defective outdoor unit main PCB Mismatch of the ref...

Page 371: ...it Error code Sub code UA 28 Go to Diagnosis Flowchart 9 DIP switch setting error of multi Branch Selector unit Error code Sub code UA 53 Ensure the sub code or the lamp display of monitor mode and then go to the following Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Go to Diagnosis Flowchart 1 Connection of excess indoor units ...

Page 372: ...1P Refer to Incorrect electric heater capacity setting troubleshooting 1 Excess indoor units are connected Check for the connection to connect the proper number of indoor units NO Diagnosis Flowchart 1 UA 17 Error code Sub code NO Is the model of indoor unit FXTQ TA YES NO YES Check if the refrigerant type of the outdoor unit corresponds to that of the indoor unit Replace the outdoor unit main PCB...

Page 373: ...e PCB made Diagnosis Flowchart 4 NO Correct the wirings If no defect is found in the wirings replace the outdoor unit main PCB A1P YES NO YES NO YES Error in the system design Replace with a single outdoor unit system or eliminate the Branch Provider unit A Branch Selector unit and a Branch Provider unit are mixed in the same system A Branch Provider unit is connected in a system with multi outdoo...

Page 374: ...O Correct the wiring Diagnosis Flowchart 5 Is the wiring between outdoor unit and Branch Selector unit correct Error code Sub code UA 25 YES Replace the relevant Branch Selector unit PCB NO Correct the wiring Diagnosis Flowchart 6 Is the wiring between Branch Selector units correct Error code Sub code UA 26 ...

Page 375: ...Replace the indoor unit PCB or the Branch Selector unit PCB Is the Branch Selector unit PCB correct Error code Sub code UA 27 YES Replace the outdoor unit main PCB A1P NO Connect the correct model Diagnosis Flowchart 8 Is the correct model of Branch Selector unit connected Error code Sub code UA 28 Are the transmission wires between indoor unit and Branch Selector unit correct ...

Page 376: ...elector unit correct the DIP switch settings Turn ON the power supply of the multi Branch Selector unit and press the RETURN BS3 button on the outdoor unit main PCB A1P for 5 seconds or more Diagnosis Flowchart 9 Is the DIP switch of the multi Branch Selector unit correct NO Correct the connection Is the indoor unit of the multi Branch Selector unit connected correctly NO Turn ON the power supply ...

Page 377: ...ce and other indoor units other than CXTQ TA are connected Error Decision Conditions Check that two or more CXTQ TA gas furnace and other indoor units other than CXTQ TA are not connected Operation After Error Codes Decided The error code UA is displayed on the remote controller Change to be the system that one CXTQ TA gas furnace and other indoor units other than CXTQ TA are connected ...

Page 378: ...applicable value Operation After Error Codes Decided The error code UA 17 is displayed on the remote controller Indoor units can operate continuously Incorrect setting is kept Even if the ON condition for electric heater 2 is established only electric heater 1 will be set to ON Electric heater 1 set to ON electric heater 2 set to OFF In order to deliver in terms of user friendliness and safety the...

Page 379: ...f its own on any other indoor unit Error Decision Conditions The error decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized controller Defective indoor unit control PCB Troubleshooting Make setting change so that the centralized address will not be duplicated The centralized address is duplicated Caution Be sure to turn off the p...

Page 380: ...g of central control group No be made in one and the same refrigerant system Has the setting of central control group No been made with the indoor unit on which the UE occurred Can the setting of central control group No be made Check the indoor unit for which UE is displayed Is the transmission error UE caused on all indoor units Was the central control group No for indoor unit changed Make corre...

Page 381: ...tralized controller Centralized controller Normal OK Correct the wiring NG A NO Correct the wiring NG YES YES Disconnect the transmission wiring of the main centralized controller and then check the voltage between the transmission terminals F1 and F2 of the master unit transmission equipment using a multimeter It is supposed that the error results from external factors e g noises from other equip...

Page 382: ... wiring between indoor outdoor units and outdoor outdoor units Failure to execute check operation Defective indoor unit control PCB Stop valve is not opened Troubleshooting Is indoor outdoor and outdoor outdoor unit transmission wiring normal Is indoor outdoor and outdoor outdoor unit transmission wiring normal Replace the indoor unit control PCB Wiring check operation may not have been carried ou...

Page 383: ...utdoor unit models Method of Error Detection Detect an indoor unit with no auto address setting Error Decision Conditions The error 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 Defective indoor unit control PCB Defective outdoor unit main PCB A1P ...

Page 384: ...replaced Does an error occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor units NO Replace the indoor unit control PCB Does a UH error occur for all indoor units in the system NO After fixing the incorrect wiring press the RETURN BS3 button on the outdoor unit main PCB for 5 seconds The unit will not run for up to 12 minutes NO NO Install the DII...

Page 385: ...he gas furnace is turned ON after a certain period of time has been elapsed after the power of the CXTQ TA was turned ON Disconnection of the communication wire between the CXTQ TA and the gas furnace Two or more gas furnaces are connected to one CXTQ TA No gas furnace is connected Troubleshooting YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or par...

Page 386: ...ommunication with the gas furnace completes and after elapsing 4 minutes after the power is turned ON Two or more gas furnaces are detected Any unit other than the gas furnace is detected Supposed Causes Connection of wrong devices Two or more gas furnaces are connected to one CXTQ TA Troubleshooting YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or ...

Page 387: ...n condensablegas Decreased airflow rate Decreased fan output Defective fan motor Defective outdoor unit main PCB Including capacity setting High airflow passage resistance Dirty filter Obstacle Excessiverefrigerantcharging Improper model selection In heating Check to be sure the stop valve is open Conduct visual checks for pipe conditions Is there any temperature difference caused before and after...

Page 388: ...iping length Bent or crashed pipe Cloggingofforeignmaterials Stop valve closed Less circulation quantity of refrigerant Degradation in evaporating capacity Refrigerant shortage Moisture choke Dirty evaporator Decreased airflow rate Decreased fan output Defective fan motor Can the fan motor be rotated with hands Are the motor coil resistance and insulation normal If a spare PCB is mounted is the ca...

Page 389: ...ontrol Superheat due to shaft damage Superheat due to defective compressor Defective indoor unit electronic expansion valve Defective control Defective control Defective outdoor unit electronic expansion valve Defective four way valve operation In cooling only 1 Compressor overheat Refrigerant shortage High pipe resistance Defective superheating degree control In cooling If the indoor unit electro...

Page 390: ...nt mode in the x1 kΩ range When using the digital type of multimeter make measurement in diode check mode No Measuring point Judgment criteria Remarks No Measuring point Judgment criteria Remarks 1 P4 U 2 30 kΩ 1 P4 U 1 2 V or more Due to condenser charge and so on resistance measurement may require some time 2 P4 V 2 P4 V 3 P4 W 3 P4 W 4 U P4 15 kΩ or more including Due to condenser charge and so...

Page 391: ...ent criteria Remarks 1 P31 U 2 30 kΩ 1 P31 U 1 2 V or more Due to condenser charge and so on resistance measurement may require some time 2 P31 V 2 P31 V 3 P31 W 3 P31 W 4 U P31 15 kΩ or more including Due to condenser charge and so on resistance measurement may require some time 4 U P31 0 3 0 7 V 5 V P31 5 V P31 6 W P31 6 W P31 7 N31 U 7 N31 U 8 N31 V 8 N31 V 9 N31 W 9 N31 W 10 U N31 2 30 kΩ 10 U...

Page 392: ...teria Remarks 1 P21 U 2 30 kΩ 1 P21 U 1 2 V or more Due to condenser charge and so on resistance measurement may require some time 2 P21 V 2 P21 V 3 P21 W 3 P21 W 4 U P21 15 kΩ or more including Due to condenser charge and so on resistance measurement may require some time 4 U P21 0 3 0 7 V 5 V P21 5 V P21 6 W P21 6 W P21 7 N5 U 7 N5 U 8 N5 V 8 N5 V 9 N5 W 9 N5 W 10 U N5 2 30 kΩ 10 U N5 1 2 V or m...

Page 393: ...arks 1 P31 U 2 30 kΩ 1 P31 U 1 2 V or more Due to condenser charge and so on resistance measurement may require some time 2 P31 V 2 P31 V 3 P31 W 3 P31 W 4 U P31 15 kΩ or more including Due to condenser charge and so on resistance measurement may require some time 4 U P31 0 3 0 7 V 5 V P31 5 V P31 6 W P31 6 W P31 7 N31 U 7 N31 U 8 N31 V 8 N31 V 9 N31 W 9 N31 W 10 U N31 2 30 kΩ 10 U N31 1 2 V or mo...

Page 394: ...ent criteria Remarks No Measuring point Judgment criteria Remarks 1 P31 U 2 30 kΩ 1 P31 U 1 2 V or more Due to condenser charge and so on resistance measurement may require some time 2 P31 V 2 P31 V 3 P31 W 3 P31 W 4 U P31 15 kΩ or more including Due to condenser charge and so on resistance measurement may require some time 4 U P31 0 3 0 7 V 5 V P31 5 V P31 6 W P31 6 W P31 7 N31 U 7 N31 U 8 N31 V ...

Page 395: ...re Low pressure Frequency High pressure gradually rises with increase in frequency Subcooling degree becomes higher Liquid connection pipe temperature lowers Low pressure rises due to decreased compressor output High pressure Low pressure Frequency Heating The outdoor unit electronic expansion valve is closed due to the overload control Frequency comes to the minimum level Highpressure is maintain...

Page 396: ...e minimum level Fan control is activated for high pressure protection under cooling control at low outdoor air temperature i e the fan is hunting at high pressure High pressure drops with decrease in compressor capacity If frequency comes to the minimum level low pressure cannot be maintained Low pressure rises as the opening degree of the indoor unit electronic expansion valve becomes larger Freq...

Page 397: ...14 6 psi or less for a period of 1 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 3 Additional refrigerant charge Purge air from the manifold gauge connection hoses and then charge a necessary amount of refrigerant Special vacuuming and dehydration Use this ...

Page 398: ...XMQ MF Type B Type J Type J Thermistor Thermistor type R1T Outdoor air thermistor Type E R21T Discharge pipe thermistor Type H R3T Receiver inlet thermistor Type A R4T Heat exchanger liquid pipe upper thermistor R5T Heat exchanger liquid pipe lower thermistor R6T Subcooling heat exchanger gas pipe thermistor R7T Subcooling heat exchanger liquid pipe thermistor R8T Heat exchanger gas pipe upper the...

Page 399: ...51 07 10 50 39 91 39 9149 39 97 15 59 31 44 31 4796 31 51 20 68 24 95 25 0060 25 02 25 77 19 94 20 0000 20 00 30 86 16 04 16 1008 16 10 35 95 12 99 13 0426 13 04 40 104 10 58 10 6281 10 63 45 113 8 669 8 7097 8 711 50 122 7 143 7 1764 7 179 55 131 5 918 5 9407 60 140 4 928 4 9439 65 149 4 123 4 1352 70 158 3 467 3 4757 75 167 2 9349 80 176 2 4894 85 185 2 1205 90 194 1 8138 95 203 1 5575 100 212 1...

Page 400: ...6 160 2244 16 1860 35 95 13 0683 130 0697 13 1222 40 104 10 6490 106 1517 10 7042 45 113 8 7269 87 0725 8 7834 50 122 7 1905 71 7703 7 2479 55 131 5 9524 59 4735 6 0131 60 140 4 9536 49 5180 5 0144 65 149 4 1434 41 4168 4 2021 70 158 3 4825 34 7923 3 5381 75 167 2 9407 29 3499 2 9925 80 176 2 4943 24 8586 2 5420 85 185 2 1247 21 1360 2 1671 90 194 1 8173 18 0377 1 8554 95 203 1 5605 15 4487 1 5949...

Page 401: ...1 0 0 5 0 0 5 0 5 0 0 5 1 1 5 2 2 5 3 3 5 4 VDC kg cm2 psi MPa PH PL PH MPa VH 0 5 PL MPa VL 0 5 PH High pressure MPa PL Low pressure MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC 4 15 3 0 4 15 3 0 1 7 3 0 1 7 3 0 1 MPa 145 psi 725 653 580 508 435 363 290 218 145 72 5 0 5 V 4 3 2 1 Red Black White X32A High pressure sensor Microcomputer A D input Make measurement of DC voltage...

Page 402: ...ing 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 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 farthe...

Page 403: ...o short circuiting while connector or relay connector is disconnected CHECK 16 FXDQ M FXHQ M FXSQ54TA FXMQ15 54PB Remove the X1A connector from the fan PCB A2P and measure the resistance between the U and V V and W and W and U phases of the motor connector with five conductors and check that each phase are balanced within a permissible dispersion range of 20 Measure the resistance values between p...

Page 404: ...cc GND Vdc Measuring point 1 4 2 4 3 4 7 4 Criteria 1 Ω 1 Ω 1 Ω 1 Ω Judgment criteria Measuring point 2 5 3 5 4 5 8 5 Criteria 1 Ω 1 Ω 1 Ω 1 Ω Judgment criteria FG Vsp Vcc GND Vdc 1 White 2 Orange 3 Brown 4 Blue 5 6 7 Red 8 Measuring point 6 3 5 3 4 3 1 3 Criteria 1 Ω 1 Ω 1 Ω 1 Ω Judgment criteria White 6 Orange 5 Brown 4 Blue 3 2 Red 1 FG Vsp Vcc GND Vdc Measuring point 5 4 5 3 5 2 5 1 Criteria 1...

Page 405: ...e motor side connectors 5 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 multimeter for measurement connect the probe of negative pole to Vcc and that of positive pole to GND Measure the resistance values between Vcc and U V W and GND and U V W GND Vcc W V U Gray Pink Orange Blue Yellow 5 4 3 2 1 ...

Page 406: ... according to the connector wire color and measure the resistance Outdoor unit Y1E Y3E Y4E Y7E Y2E Y5E CHECK 18 Measuring points 1 6 2 6 3 6 4 6 120 180 Ω 35 55 Ω White 1 Yellow 2 Orange 3 Blue 4 5 Red 6 Judgment criteria Y1E Y3E Y4E Measuring points 1 5 2 5 3 5 4 5 Judgment criteria 120 180 Ω White 1 Yellow 2 Orange 3 Blue 4 Red 5 Measuring points 1 6 2 6 3 6 4 6 Judgment criteria 35 55 Ω Orange ...

Page 407: ...55 Ω Orange 1 Red 2 Yellow 3 Black 4 5 Gray 6 White 1 Yellow 2 Orange 3 Blue 4 Red 5 Brown 6 Measuring points 1 3 1 5 2 4 2 6 Judgment criteria 300 Ω 150 Ω 300 Ω 150 Ω Orange White Yellow Red 1 2 5 Brown Blue 3 6 4 Measuring points 1 3 1 5 2 4 2 6 Judgment criteria 300 Ω 150 Ω 300 Ω 150 Ω Measuring points 1 6 2 6 3 6 4 6 Judgment criteria 35 55 Ω 2 Yellow 4 Blue φ2 φ4 White 1 Red 6 5 Orange 3 φ1 φ...

Page 408: ...1901E 395 Service Diagnosis Branch Selector unit EVH EVL Measuring points 1 6 2 6 3 6 4 6 Judgment criteria 120 180 Ω φ2 φ4 White 1 2 Yellow 4 Blue 5 White 1 Yellow 2 Orange 3 Blue 4 5 Red 6 Red 6 Orange 3 φ1 φ3 M ...

Page 409: ...ecured to the housing Ensure bracket is not cracked or broken Emerson UltraCheck EZTM Diagnostic Tool The Emerson UltraCheck EZTM diagnostic tool may be used to diagnose the ECM motor HIGH VOLTAGE Disconnect ALL power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death To use the diagnostic tool perform the follow...

Page 410: ...ns 4 and 3 Voltage should be approximately half of the voltage measured in step 4 6 Measure voltage between pins 5 and 3 Voltage should be approximately half of the voltage measured in step 4 7 If no voltage is present check supply voltage to air handler or modular blower 8 Disconnect power to air handler or modular blower Reconnect the 5 circuit power harness disconnected in step 2 Power Button G...

Page 411: ...odular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing power to allow capacitors to discharge 2 Disconnect the motor control harness and motor power harness 3 Remove the blower assembly from the air handler or modular blower 4 Remove the 3 screws securing the control end bell to the motor Separate the control ...

Page 412: ... or death 1 Disconnect power to air handler or modular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing power to allow capacitors to discharge 2 Disassemble motor as described in steps 2 through 4 above 3 Locate the 3 circuit harness from the motor Using an ohmmeter measure the resistance between each motor pha...

Page 413: ...SiUS371901E Appendix 400 Part 7 Appendix 1 Wiring Diagrams 401 1 1 Outdoor Unit 401 1 2 Indoor Unit 406 1 3 Air Treatment Equipment 420 1 4 Branch Selector Unit 423 ...

Page 414: ...Wiring Diagrams SiUS371901E 401 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit REYQ72 96 120XATJU 2D119205A ...

Page 415: ...SiUS371901E Wiring Diagrams Appendix 402 REYQ144 168XATJU 2D119206A ...

Page 416: ...Wiring Diagrams SiUS371901E 403 Appendix REYQ72 96 120XAYDU 2D119207B ...

Page 417: ...SiUS371901E Wiring Diagrams Appendix 404 REYQ144 168XAYDU 2D119208B ...

Page 418: ...Wiring Diagrams SiUS371901E 405 Appendix REYQ72 96 120 144 168XAYCU 2D119209A ...

Page 419: ...SiUS371901E Wiring Diagrams Appendix 406 1 2 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B ...

Page 420: ...Wiring Diagrams SiUS371901E 407 Appendix BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ TVJU 3D076375A ...

Page 421: ...SiUS371901E Wiring Diagrams Appendix 408 FXZQ05 07 09 12 15 18TAVJU 3D110443A ...

Page 422: ...CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 3 IN CASE OF MAIN SUB CHANGEOVER SEE THE INSTALLATION MANUAL ATTACHED TO REMOTE CONTROLLER 4 SYMBOLS SHOW AS FOLLOWS BLK BLACK RED RED BLU BLUE WHT WHITE YLW YELLOW GRN GREEN ORG ORANGE BRN BROWN PNK PINK 5 WHEN CONNECTING THE INPUT WIRING FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE ...

Page 423: ...SiUS371901E Wiring Diagrams Appendix 410 FXEQ07 09 12 15 18 24PVJU 3D098557A ...

Page 424: ...ONITOR GREEN MAGNETIC RELAY M1P MOTOR INDOOR FAN MOTOR DRAIN PUMP THERMAL PROTECTOR M1F EMBEDDED THERMISTOR AIR THERMISTOR COIL 1 THERMISTOR COIL 2 FLOAT SWITCH TRANSFORMER 208 230V 25V PHASE CONTROL CIRCUIT TERMINAL BLOCK TERMINAL BLOCK ELECTRONIC EXPANSION VALVE NOISE FILTER FERRITE CORE CONNECTOR FOR OPTIONAL PARTS CONNECTOR ADAPTOR FOR WIRING CONNECTOR WIRING ADAPTOR FOR ELECTRICAL APPENDICES ...

Page 425: ...SiUS371901E Wiring Diagrams Appendix 412 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C ...

Page 426: ...Wiring Diagrams SiUS371901E 413 Appendix FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B ...

Page 427: ...L 2 FIELD WIRING 3 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK B...

Page 428: ...Wiring Diagrams SiUS371901E 415 Appendix FXHQ12 24 36MVJU 3D048116C ...

Page 429: ...SiUS371901E Wiring Diagrams Appendix 416 FXAQ07 09 12 18 24PVJU C 3D075354D ...

Page 430: ...ECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED TO THE UNIT 5 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN GRN GREEN 6 USE COPPER CONDUCTORS ONL...

Page 431: ... VOLTAGE FIELD JUNCTION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND X1A X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU MULTI TENANT OPTION EEV COIL M K1R K3R TB6 TB8 K2R HEATER KIT OUTPUT LEARN PS TB5 TB4 ACC OUT RELAY OUT 4 3 6 5 9 8 7 10 11 12 RD BK RD BK WH BR BL BL RD FLASH WRITER OR GY RD YL BK PU YL SEE NOTE 5 TO HEATER KIT BK GR GROUND LUG CONNECTIO...

Page 432: ...ION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND 0140D00002 A X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU EEV COIL M K3R TB6 TB8 LEARN PS TB5 TB4 ACC OUT RELAY OUT FLASH WRITER GR RD H2P COM STAT H3P RX DATA DS1 WIRING ADAPTER PCB OPTION REMOTE SENSOR OPTION X4A X35A X23A CAPACITY SETTING X1M X2M F1 T1 P2 P1 T2 F2 1 2 R C ECONOMIZER OPTION HUMIDIFIER OPT...

Page 433: ...SiUS371901E Wiring Diagrams Appendix 420 1 3 Air Treatment Equipment 1 3 1 Outdoor Air Processing Unit FXMQ48 72 96MFVJU 3D065426D ...

Page 434: ...Wiring Diagrams SiUS371901E 421 Appendix 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269D ...

Page 435: ...SiUS371901E Wiring Diagrams Appendix 422 VAM1200GVJU 3D073270D ...

Page 436: ...Wiring Diagrams SiUS371901E 423 Appendix 1 4 Branch Selector Unit 1 4 1 Single Branch Selector Unit BSQ36 60 96TVJ 3D089521B ...

Page 437: ...SiUS371901E Wiring Diagrams Appendix 424 1 4 2 Multi Branch Selector Unit BS4Q54TVJ 3D089123B ...

Page 438: ...Wiring Diagrams SiUS371901E 425 Appendix BS6 8Q54TVJ 2D089122B ...

Page 439: ...SiUS371901E Wiring Diagrams Appendix 426 BS10 12Q54TVJ 2D089121B ...

Page 440: ...Revision History Month Year Version Revised contents 04 2019 SiUS371901E First edition ...

Page 441: ...e of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion z Read the user s manual carefully before using this product The user s manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any inquiries please contact your local...

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