Daikin VRVII Manual page 245

Troubleshooting
Caution
Measure resistance value
of the radiation fin
thermistor.
CHECK 11
Is the
thermistor
resistance value
normal?
The INV.
compressor's
insulation resistance is
not more than
100kΩ.
The fan
motor's insulation
resistance is not
more than
1MΩ.
Does the
error recur when
the power supply
turns ON?
CHECK 11
240
Troubleshooting by Indication on the Remote Controller
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
∗ Disconnect the connector from the
radiation fin thermistor, and then
check the thermistor.
NO
YES
YES
NO
YES
NO
YES
NO
Refer to P.369.
Replace the
inverter PCB.
Replace the
compressor
(M1C).
Replace the fan
motor.
Replace the
inverter PCB.
Continue the
operation.