Daikin FTXZ25NV1B Service Manual page 185

SiMT041311E
Troubleshooting
Check the power supply voltage.
Check the connection of the
compressor harness.
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
voltage fluctuation
within ±10% from the
rated value?
YES
Loose or
disconnected?
NO
Does the
outdoor fan rotate
smoothly?
YES
Turn on
YES
the power. System
restarted? (Repeat a few
times.)
NO
Error
NO
again within 3 minutes
after turning on the
power?
YES
NO
YES
NO
(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
Troubleshooting
Correct the power supply.
Reconnect the harness.
Replace the outdoor fan motor
and the outdoor unit PCB.
Check for such factors for a
long term.
Replace the outdoor
unit PCB.
Replace the indoor
unit PCB (A1P).
(R19955)
170