Daikin FTXN25KEV1B Service Manual page 96

Troubleshooting
Troubleshooting
86
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the power supply voltage.
Voltage as rated?
YES
Check the connection of the
compressor harness.
Loose or
disconnected?
NO
Turn on the
power again. System
restarted?
NO
Repeat a few
times.
Error
again within 3 minutes
after turning on the
power?
NO
NO
YES
(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
YES
SiBE041102_A
Correct the power supply.
Reconnect it.
Check for such factors for a
long term.
∗ Try to restart a few times.
Replace the indoor
unit PCB.
Replace the outdoor
unit PCB.
(R15291)
Service Diagnosis