Daikin VRV IV-S RXTQ-TAVJU Series Service Manual page 143

SiUS331604E
Error code Operation
System U0
U2
U3
U4
U5
U8
U9
UA
UC
UE
UF
UH
M1
M8
MA
MC
—
—
—
In the case of error codes identified by black squares, system operation continues, however, be sure to check and repair.
Service Diagnosis
lamp
k
Refrigerant shortage
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 main and sub remote controllers
l
Transmission error between indoor and outdoor units in the same system
l
Improper combination of indoor and outdoor units, indoor units and remote
controller
k
Address duplication of centralized controller
l
Transmission error between centralized controller and indoor unit
l
System not set
l
System abnormality, refrigerant system address undefined
l
Defective PCB
l
Transmission error (Between centralized controllers)
l
Poor centralized controller combination
l
Address duplication, poor setting
l
The operation lamp blinks
l
Central control indicator lamp blinks (One blink)
l
Central control indicator lamp blinks (Two blinks)
Description
Service Check Function
k: ON h: OFF l: Blink
Reference
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