Daikin VRV III REYQ8PY1 Service Manual page 300

Si37-701
Troubleshooting Compressor inspection
Power OFF
∗
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check if
the stop valve is
open.
Check if
the compressor lead
wires are normal.
Check if the
wiring and connection to
the compressor
are normal.
Insulation
resistance of the compressor
is 100 kΩ or
below.
Compressor
coils are disconnected.
Check 4
Check if the power transistor
is normal.
Failure
occurs again after restarting
the unit.
Check 4 : Referring to the information on P349.
Troubleshooting by Indication on the Remote Controller
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
∗
NO
YES
NO
YES
Open the stop valve.
Replace compressor lead
wires.
Correct the wiring and
connection.
Replace inverter
compressor.
Replace inverter
compressor.
Replace inverter PC board
(A2P).
Continue operation.
(
Momentary power failure
is possible.
Replace inverter
compressor.
289