Daikin RQYQ140-180PY1 Service Manual page 152

Troubleshooting by Remote Controller
Troubleshooting
Power OFF
Power ON
Power OFF
Power ON
∗
143
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
less.
Compressor
coils are disconnected.
CHECK 4
Check if the power transistor
is normal.
Failure
occurs again after restarting
the unit.
Replace the inverter PCB
(A3P).
Failure
occurs again after restarting
the unit.
CHECK 4
: Referring to the information on P.192.
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
∗
NO
YES
NO
YES
NO
YES
SiBE341001
Open the stop valve.
Replace compressor lead
wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the inverter PCB
(A3P).
Continue the operation.
(
Momentary power failure
is possible.
Continue the operation.
Replace the inverter
compressor.
Troubleshooting