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Si20-701_B
Troubleshooting by Remote Controller
288
Refer to P.488.
Some phase
has a broken wire.
YES
YES
NO
The
insulation
resistance is low (i.e.,
not more than
100k
Ω
.)
NO
NO
Check the compressor
motor coil for any broken
wire.
Make wire connections
according to the Wiring
Diagram.
Check the power
transistor on the inverter
PCB using a multiple
tester.
CHECK 16
YES
The
power
transistor has an
abnormality.
A
B
Replace the
inverter PCB
(A3P).
Replace the
compressor.
Power
OFF
Disconnect the cable from
the compressor, and then
check the compressor for
the insulation resistance.
CHECK 16