Troubleshooting by Error Code
SiAF332111E
324
Part 6 Service Diagnosis
5.67 System Not Set Yet
Applicable
Models
All indoor unit models
All outdoor unit models
Error Code
UF
Method of Error
Detection
On check operation, the number of indoor units in terms of transmission is not corresponding to
that of indoor units that have made changes in temperature.
Error Decision
Conditions
The error is determined as soon as the abnormality aforementioned is detected through
checking the system for any erroneous connection of units on the check operation.
Supposed
Causes
Improper connection of transmission wiring between indoor-outdoor units
Failure to execute check operation
Defective indoor unit PCB
Stop valve is not opened
Troubleshooting
RXQ4/5AR
Caution
Is indoor-
outdoor unit
transmission wiring
normal?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
After fixing incorrect wiring,
press and hold the
RESET
(BS5)
button on the outdoor
unit main PCB for 5 seconds.
∗
The unit will not run for up to
12 minutes.
YES
YES
NO
NO
Open the stop valves.
Replace the indoor unit PCB.
Normal
YES
NO
Are the stop valves
opened?
Is
UF
displayed again?
Perform the check operation
again and press the
RESET
(BS5)
button.
Summary of Contents for VRV S RXMQ10ARY1
Page 1: ...Service Manual Cooling Only 50 60 Hz RXQ4 5ARV1 RXMQ6ARV1 RXMQ8 10 12ARY1 SiAF332111E...
Page 369: ...SiAF332111E Wiring Diagrams Part 7 Appendix 363 RXMQ6ARV1 C 3D137051...
Page 370: ...Wiring Diagrams SiAF332111E 364 Part 7 Appendix RXMQ8ARY1 C 3D137060...
Page 371: ...SiAF332111E Wiring Diagrams Part 7 Appendix 365 RXMQ10 12ARY1 3D121610B...
Page 375: ...SiAF332111E Wiring Diagrams Part 7 Appendix 369 FXMQ40 50 63 80 100ARV1 3D127112 04 59...