Service Manual

SiUS091133 Troubleshooting
Service Diagnosis 108
Troubleshooting
Correct the power supply.
Replace the outdoor
unit PCB.
Check for such factors for a
long term.
∗ Try to restart a few times.
(R16043)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
NO
YES
NO
YES
YES
Reconnect the harness.
Check the power supply voltage.
Check the connection of the
compressor harness.
Disturbance factors
∗ Noise ∗ Power supply distortion
Repeat a few
times.
(Precaution before turning on the power again)
Make sure the power has been off for at
least 30 seconds.
Replace the indoor
unit PCB.
Turn on the
power again. System
restarted?
Error
again within 3 minutes
after turning on the
power?
Loose or
disconnected?
Voltage as rated?
YES
NO