SiBE341027
Troubleshooting by Remote Controller
Service Diagnosis
153
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the fan motor.
If the fan motor is badly
damaged, replace the
inverter PCB (A4P).
YES
NO
YES
NO
NO
YES
NO
YES
There are
problems on the
condition of power
supply described
above.
NO
YES
The insulation
resistance of
compressor is not
more 100k
Ω
.
The insulation
resistance of fan
motor is not more
1M
Ω.
CHECK 4
Has the inverter
PCB caused
damage?
Check the condition of the
power supply.
Check if power supply
voltage is 380 to 415V.
Check if there is open
phase or wrong wiring.
Check if power supply
voltage side unbalance is
with in 6V.
Remove and insert the
connectors shown below.
X4A (A4P)
↔
X16A (A2P)
X6A (A4P)
↔
X28A (A1P)
A
Is the power transistor
normal?
Correct the problem.
Replace the compressor.
Replace the inverter PCB (A4P)
Replace the inverter PCB (A4P).
If the inverter PCB is badly
damaged, compressor and
fan motor are likely to get
faulty.
