Daikin RXQ12AHR Service Manual page 178

Troubleshooting with Remote Controller
Error code
System U0
U1
U2
U3
U4
U5
U7
U8
U9
UA
UC
UE
UF
UH
The system operates for error codes indicated, however, be sure to check and repair.
172
Operation
lamp
Refrigerant shortage warning
k
Open phase
l
l Power supply insufficient or instantaneous abnormality
l Check operation not executed
l Transmission error between indoor units and outdoor units
l Transmission error between remote controller and indoor unit
l Transmission error between outdoor units
l Transmission error between main and sub remote controllers
l Other indoor units and outdoor unit abnormality
Improper combination of indoor unit and outdoor unit, indoor unit and remote
l
controller
k Address duplication of centralized controller
l Transmission error between centralized controller and indoor unit
l System not set yet
l System abnormality, refrigerant system address undefined
Error contents
SiAF341904E
Reference
page
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Part 6 Service Diagnosis