Daikin VRV-WIII RWEYQ72PTJU Service Manual page 211

SiUS30-1301
Troubleshooting
Compressor inspection
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the stop valve open?
compressor lead
wires normal?
Are the wiring
and connection to the
compressor
normal?
Power OFF
insulation resistance
of the compressor 100 kΩ
or less?
Compressor
coils are disconnected.
CHECK 4
Is the power transistor
normal?
occurs again after
Power ON
restarting the unit.
Replace the inverter PCB.
Power OFF
Power ON
occurs again after
restarting the unit.
CHECK 4 Refer to P.244.
Troubleshooting by Indication on the Remote Controller
NO
YES
Are the
NO
YES
NO
YES
Is the
YES
NO
YES
NO
NO
YES
Failure
NO
YES
Failure
NO
YES
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.
Continue the operation.
Momentary power
failure is possible.
Continue the operation.
Replace the inverter
compressor.
203