![background image](http://html1.mh-extra.com/html/daikin/rxsq24tavju/rxsq24tavju_service-manual_2459946241.webp)
SiUS331708EA
Troubleshooting by Error Code
Service Diagnosis
228
4.52 Transmission Error between Remote Controller and
Indoor Unit
Error Code
U5
Applicable
Models
All indoor units
Method of Error
Detection
In case of controlling with 2 remote controllers, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Error Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Transmission error between indoor unit and remote controller
Connection of 2 main remote controllers (when using 2 remote controllers)
Defective indoor unit PCB
Defective remote controller PCB
Defective transmission caused by noise
Troubleshooting
Refer to page 29 for Main/Sub setting.
Control by
2 remote controllers
Main/Sub
setting of both
remote controllers is
set to Main.
All indoor unit
PCB microcomputer
normal monitors
blinking
Resets
normally when
power supply is turned
OFF temporarily.
NO
NO
NO
YES
NO
Replace the indoor unit
PCB.
Set one of the remote
controllers to Sub, turn OFF
the power supply temporarily,
then restart operation.
The error could be produced by
noise. Check the surrounding
area and restart operation.
The error could be produced by
noise. Check the surrounding
area and restart operation. (Ex.:
Heavy-duty wireless equipment,
etc.)
Normal.
Normal.
NO
NO
YES
YES
YES
Replace the remote controller
and restart operation.
YES
Replace the indoor unit PCB
and restart operation.
Is operation normal?
Is operation normal?
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...