Daikin VRV RXYMQ-A Series Service Manual page 207

SiME332106E
Note(s)
1. RXYMQ4AVMK: outdoor unit main PCB (A1P)
Reference
CHECK 4 Refer to page 275.
Part 6 Service Diagnosis
A
The insulation
resistance of the
compressor is low
(< 100 k:)
Power OFF
The
internal wiring of
the compressor coil is
defective.
Restart the
compressor, and then
check for the operation.
Does the error
recur?
Power ON
Has the
compressor
started up at high
differential pressure
(0.5 MPa or
more)?
CHECK 4
Power OFF
Is the power
transistor
normal?
The error recurs at
Power ON
startup.
Replace the inverter
Power OFF
PCB (A3P).
The error recurs at
Power ON
startup.
RXYMQ4-6AYFK: inverter PCB (A3P)
YES
NO
YES
NO
NO
YES YES
YES
NO
NO
YES
NO
YES
NO
YES
Troubleshooting by Error Code
Replace the compressor (M1C).
Quit work.
Pressure equalization failure
may have occurred. Check for
the refrigerant system.
Pressure equalization failure.
Check for the refrigerant
system.
Replace the relevant PCB ( 1) .
RXYMQ4-6AYFK only
Continue operation.
The error could have
resulted from instantaneous
power failure.
Continue operation.
Replace the compressor (M1C).
This is not a failure of the
PCB. Reinstall the PCB.
201