Daikin FVXS25FV1B Service Manual page 145

Troubleshooting
Troubleshooting
Note: If the model doesn't have PM1, replace the outdoor unit PCB.
134
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the supply voltage.
Supply voltage as
specified?
YES
Rotate fan by hand.
Does fan rotate
smoothly?
YES
Turn on the
power again.
System restarted?
NO
Repeat a
couple of times.
NO
NO
(Precaution before turning on the power again)
Make sure the power has been off for
at least 30 seconds.
YES
Disturbance factors
∗ Noise ∗ Power supply distortion
SiBE06-708
Correct the power supply.
Replace fan motor and
outdoor unit PCB .
Check for such factors for a
long term.
∗ Try to get restarted a
couple of times.
Replace the PM1.
(Replace the outdoor unit
PCB.)
(R6680)
Service Diagnosis