Daikin FTX50GV1B Service Manual page 74

Troubleshooting
Troubleshooting
63
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the power supply voltage.
Is the
voltage fluctuation
within ±10% from the
rated value?
YES
Check the connection of the
compressor harness.
Loose or
disconnected?
NO
Does the
outdoor fan rotate
smoothly?
YES
Turn on the power.
System restarted?
(Repeat a few times.)
YES
Disturbance factors
∗ Noise
∗ Power supply distortion
NO
YES
NO
(Precaution before turning on the power again)
Make sure the power has been off for at
least 30 seconds.
NO
SiBE041029EB
Correct the power supply.
Reconnect the harness.
Replace the outdoor fan
motor and the outdoor unit
PCB.
Replace the outdoor
unit PCB.
Check for such factors for
a long term.
(R19544)
Service Diagnosis