Service manual

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(V2812)
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.
Replace the compressor.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
NO
Replace the inverter unit.
YES
YES
Correct power supply.
YES
The compressor's
coil is disconnected
or the insulation is
defective.
NO
NO
Disconnect the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
There is
instantenious
power drop.