Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 168

SiUS12-928_B
Troubleshooting
Service Diagnosis
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?
YES
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
NO
Troubleshooting for Outdoor Unit
Correct the power supply.
Reconnect the harness.
Check for such factors for a
long term.
∗ Try to restart a few times.
Replace the outdoor
unit PCB.
Replace the indoor
unit PCB.
(R17269)
160