Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 152

Troubleshooting by Remote Controller
Troubleshooting
142
Continued from the previous page.
(Start failure due to aged operation.)
Refrigerant
is melting in refrigerant
oil. (The unit is out of
power supply for more
than 6 hours.)
YES
Is the insulation
resistance of the
compressor 100k Ω
or more?
YES
Broken wire inside
the compressor
NO
CHECK 4
Check if the
power transistor
is normal.
YES
CHECK 4
Refer to P.182
NO
NO
YES
NO
SiBE341027
Cancel the melting state of
refrigerant.
Replace the inverter compressor.
Replace the inverter compressor.
Replace the compressor inverter
PCB (A4P).
Recheck the compressor/
refrigerant circuit.
Service Diagnosis