SiUS342004EB
Troubleshooting by Error Code
Part 6 Service Diagnosis
256
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
Properly connect the
connector(s).
NO
NO
Normal.
The error could be caused by
other causes. Refer to other
diagnosis flowcharts in the
following order:
AH-05
→
03
→
06
→
07
→
08
→
09
.
Check the indoor unit control
PCB and self-cleaning
decoration panel PCB.
AH-04
Dust detection sensor error
Diagnosis Flowchart-2
NO
Properly connect the
connector.
Is the
connector X12A on the
self-cleaning decoration panel PCB
properly connected?
YES
YES
YES
Replace the harness.
YES
Remove the external factor.
Is there any
external factor other than the
error such as noise?
NO
Turn OFF the power supply and
then turn it ON again. Then, start
operation with remote controller.
Are the
connectors X18A and X19A
on the infrared sensor PCB
properly connected?
Is the harness
short-circuited?
Error
AH
recurs,
or the self-cleaning decoration panel
lamp (red) blinks?
Summary of Contents for VRV RXYQ72-384XAYCA
Page 1: ...Service Manual RXYQ72 384XAYCA RXYQ72 384XBYCA Heat Pump 60 Hz SiUS342004EB...
Page 395: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 388 FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Page 397: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 390 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 401: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 394 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 402: ...Wiring Diagrams SiUS342004EB 395 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C...
Page 409: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 402 FXHQ12 24 36MVJU 3D048116C...
Page 410: ...Wiring Diagrams SiUS342004EB 403 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Page 418: ...Wiring Diagrams SiUS342004EB 411 Part 7 Appendix VAM1200GVJU 3D073270D...