Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 150

Troubleshooting by Remote Controller
Troubleshooting Output current check
Power OFF
140
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is the stop valve
opened?
Are the
compressor
lead wires
normal?
Are the wiring
and connection to
the compressor
normal?
Is the insulation
resistance of the
compressor 100k Ω
or less?
Compressor coils
are disconnected.
CHECK 4
Is the power transistor
normal?
Connect the compressor lead
wires then restart the operation.
Error code "
displayed again.
Is the
pressure difference
between high pressure and
low pressure before
restarting 0.2MPa
or below?
CHECK 4 Refer to P.182
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
L8
" is NO
YES
NO
YES
SiBE341027
Open the stop valve.
Replace the compressor
lead wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the inverter
PCB (A4P).
Continue the operation.
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
Service Diagnosis