Daikin VRVII Manual page 272

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Check the condition of the
power supply.
Check if power supply
voltage is 380 to 415V.
Check if there is open
phase or wrong wiring.
Check if power supply
voltage side unbalance
is with in 6V.
There are
problems on the
condition of power
supply described
above.
The
insulation
resistance of
compressor is not
more 100kΩ.
The
insulation
resistance of fan
motor is not more
1MΩ.
CHECK 4
Is the power
transistor
normal?
A
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
NO
YES
NO
YES
NO
NO
YES
Correct the
problem.
Replace the
compressor.
Replace the fan
motor.
∗ If the fan
motor is badly
damaged,
replace the
inverter PCB.
Replace the
inverter PCB.
267