Daikin VRV RXYMQ-A Series Service Manual page 229

SiME332106E
 Subcode L4-06
Note(s)
1. RXYMQ4AVMK: outdoor unit main PCB (A1P)
2. RXYMQ4AVMK: outdoor unit main PCB (A1P)
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the cooling conditions
of the inverter heat sink.
(1) Is the heat sink properly
fixed with screws?
(2) Error code U0 is displayed
on the Error History
screen.
Normal?
YES
Turn
ON the power
supply. Does the error
recur when operation
starts?
NO
RXYMQ4-6AYFK: inverter PCB (A3P)
RXYMQ4-6AYFK: fan PCB (A4P)
NO
YES
Troubleshooting by Error Code
Rectify troubles.
Replace the relevant PCB ( 2).
Continue operation.
Field factor. Heat sink radiation fin
temperature may have risen due to
high outdoor air temperature.
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