Daikin R71FUV1 Service Manual page 341

Si20-701_B
Troubleshooting
Caution
Disconnect the cable from
the compressor, and then
Power
check the compressor for
OFF
the insulation resistance.
Disconnect the cable from
the fan, and then check
the fan motor for the
insulation resistance.
Remove and insert the fin
thermistor connector
Power
ON
334
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
The
insulation
resistance is low (i.e.,
not more than
100kΩ.)
NO
The
insulation
resistance is low (i.e.,
not more than
1MΩ.)
NO
Turn ON
the power supply,
and then check whether
or not the error
recurs.
NO
Troubleshooting by Remote Controller
YES
YES
YES
Replace the
compressor.
Replace the fan
motor.
Replace the fan
driver PCB.
Replace the
inverter PCB.
End