Correct the power supply.
Replace the outdoor
unit PCB (main PCB).
Check for such factors for a
long term.
(R22445)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
NO
YES
YES
YES
YES
Reconnect the harness.
Check the power supply voltage.
Check the connection of the
compressor harness.
(Precaution before turning on the power again)
Make sure the power has been off for at
least 30 seconds.
Disturbance factors
Noise
Power supply distortion
Turn on
the power. System
restarted? (Repeat a few
times.)
Loose or disconnected?
NO
NO
Replace the outdoor fan motor
and the outdoor unit PCB
(main PCB).
Does the
outdoor fan rotate
smoothly?
Is the
voltage fluctuation
within ±10% from the
rated value?
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