SiUS371901E
Troubleshooting by Error Code
Service Diagnosis
306
Troubleshooting
Note:
∗
1. Thermistors
NO
Is the
temperature
checked by the
Service Checker same as
the measurement of the
temperature?
NO
Replace the relevant thermistor.
Replace the outdoor unit main
PCB (A1P).
YES
YES
Connect the Service Checker.
Reset the system operation,
and then restart it.
CHECK 11
Are the
characteristics of the
discharge pipe and
compressor surface
temperature
thermistors
normal?
(
∗
1)
• All thermistors are normal, and temperature detection
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
measurements of discharge pipe surface temperature
(or compressor surface temperature.)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Applicable Thermistor
Electric symbol
Connector
Discharge pipe thermistor for M1C
R21T
X19A
(Group connector)
Compressor body thermistor
R14T
CHECK 3
CHECK 11
Summary of Contents for REYQ-XA
Page 1: ...Service Manual SiUS371901E REYQ72 456XATJU REYQ72 456XAYDU REYQ72 432XAYCU Heat Recovery 60 Hz...
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 421: ...SiUS371901E Wiring Diagrams Appendix 408 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 423: ...SiUS371901E Wiring Diagrams Appendix 410 FXEQ07 09 12 15 18 24PVJU 3D098557A...
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 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 435: ...SiUS371901E Wiring Diagrams Appendix 422 VAM1200GVJU 3D073270D...
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...