SiBE121123_A Troubleshooting for Outdoor Unit
Service Diagnosis 184
Check No.11
Refer to P.209
NO
(R18132)
Disturbance?
YES
NO
Grounded?
YES
YES
Turn off the power supply.
Disconnect No. 3 terminal and
turn on the power supply again.
Does the LED A
blink more than 10
times?
NO
YES
Check the relay wire between the
indoor unit and the outdoor unit.
Check wrong wiring, insulation
among wiring, insulation to ground
Check grounding.
OK?
NO
YES
Does the LED A turn off?
(1)
NO
Check No.11
Power supply waveform check
()
Continued from
the previous
page
Carry out grounding work.
The cause seems to be an
external factor other than
the outdoor unit PCB.
Investigate source of noise
and take measures.
Investigate the cause of
disturbance and take
remedial action.
Replace the outdoor unit
PCB.
Reconnect the relay wire.
Replace the indoor unit
PCB.
YES
NO
Replace both the fan motor
and the outdoor unit PCB.
Rotate the
outdoor fan by hand.
Does the outdoor fan rotate
smoothly?