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Si20-701_B
Troubleshooting by Remote Controller
312
Troubleshooting
A
Disconnect the cable from
the compressor, and then
check the compressor for
the insulation resistance.
Is the stop
valve open?
YES
Are wire
connections
properly made
(according to the
Wiring
Diagram)?
The
insulation
resistance is low (i.e.,
not more than
100k
Ω
.)
Open the stop
valve.
Rectify the wire
connections.
Replace the
compressor.
Replace the
inverter PCB.
The inverter is
likely to have
got defective
due to the error
of the
compressor.
After the
completion of
replacement,
be sure to
check the
compressor.
NO
NO
YES
Check the power
transistor on the inverter
PCB using a multiple
tester.
Connect the compressor
cable, and then restart
the operation.
Does
the power
transistor have any
abnormalities?
NO
YES
YES
NO
Power
OFF
Check the
compressor
cable for any
disconnection
or flaws.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.