Specifications

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Troubleshooting 137
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(V2812)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Compressor inspection
Inverter
output
voltage check
Inverter output
voltage is not balanced.
(Normal if within ±5V 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.