SiUS371901EB
Troubleshooting by Error Code
Part 6 Service Diagnosis
414
3.77 Climate Talk Communication System Combination Error
(Before Initial Setting for Communication Completes)
Applicable
Models
CXTQ-TA
Error Code
UH-05
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 s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
The gas
f
u
rnace and the
CXTQ-TA are t
u
rned O
N
at the same
time.
YES
YES
N
O
N
O
N
O
1 and 2
terminals of the
gas f
u
rnace and the
CXTQ-TA are
connected each
other.
Replace the CXTQ-TA PCB
or the gas f
u
rnace PCB.
T
u
rn O
N
the gas f
u
rnace
and the CXTQ-TA at the
same time.
Connect the gas f
u
rnace of
proper com
b
ination. Do not
connect any other de
v
ices.
Ens
u
re correct
w
iring of the
comm
u
nication
w
ire
b
et
w
een terminals.
Any
de
v
ice other
than the gas
f
u
rnace of proper
com
b
ination is connected
to 1 and 2
terminals of
X
8
A.
Summary of Contents for REYQ72-432XAYCU
Page 455: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 448 REYQ144 168XATJU REYQ144 168XATJA 2D119206B ...
Page 457: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 450 REYQ144 168XAYDU REYQ144 168XAYDA 2D119208C ...
Page 461: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 454 FXZQ05 07 09 12 15 18TAVJU 3D110443A ...
Page 463: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 456 FXEQ07 09 12 15 18 24PVJU 3D098557A ...
Page 464: ...Wiring Diagrams SiUS371901EB 457 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C ...
Page 468: ...Wiring Diagrams SiUS371901EB 461 Part 7 Appendix FXHQ12 24 36MVJU 3D048116C ...
Page 469: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 462 FXAQ07 09 12 18 24PVJU 3D075354F ...
Page 475: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 468 VAM1200GVJU 3D073270D ...
Page 478: ...Wiring Diagrams SiUS371901EB 471 Part 7 Appendix BS6 8Q54TVJ 2D089122B ...
Page 479: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 472 BS10 12Q54TVJ 2D089121B ...
Page 481: ...SiUS371901EB Wiring Diagrams Part 7 Appendix 474 BSF6 8Q54TVJ 2D123905A ...
