SiUS371901E
Troubleshooting by Error Code
Service Diagnosis
372
3.77 Climate Talk Communication System Combination Error
(Before Initial Setting for Communication Completes)
Error Code
UH-05
Applicable
Models
CXTQ-TA
Method of Error
Detection
Detects the type of the devices constituted in Climate Talk Communication.
Error Decision
Conditions
The error decision is made when any of the following conditions is established before 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.
The initial setting for communication does not complete.
Supposed
Causes
Connection of wrong devices
The power of the gas furnace is not turned ON, or the power of the 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 parts may be damaged.
The gas
furnace and the
CXTQ-TA are turned ON
at the same
time.
YES
YES
NO
NO
NO
1 and 2
terminals of the
gas furnace and the
CXTQ-TA are
connected each
other.
Replace the CXTQ-TA PCB
or the gas furnace PCB.
Turn ON the gas furnace
and the CXTQ-TA at the
same time.
Connect the gas furnace of
proper combination. Do not
connect any other devices.
Ensure correct wiring of the
communication wire
between terminals.
Any
device other
than the gas
furnace of proper
combination is connected
to 1 and 2
terminals of
X8A.
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...