Service manual

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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Inverter
output voltage
check. Inverter
output voltage is not
balanced. (Normal if within
±10V) Must be measured
when frequency is
stable.
Unsatisfactory pressure
equalization
Check refrigerant system.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
YES
Replace the inverter PC board
NO
NO
Reset and restart.
NO
YES
YES
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode ON by
service mode.
After turning on
again, "L9" blinks
again.
(V2814)
The difference
between high and low
pressure when
starting is above
0.2MPa.