Specifications

Troubleshooting by Remote Controller SiBE341027
140 Service Diagnosis
Troubleshooting Output current check
Refer to P.182
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
Is the stop valve
opened?
Are the
compressor
lead wires
normal?
Are the wiring
and connection to
the compressor
normal?
Is the insulation
resistance of the
compressor 100k
Ω
or less?
Compressor coils
are disconnected.
CHECK 4
Is the power transistor
normal?
Error code “
L8
” is
displayed again.
Power OFF
NO
NO
NO
YES
YES
NO
YES
NO
Open the stop valve.
Replace the compressor
lead wires.
Correct the wiring and
connection.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the inverter
PCB (A4P).
Continue the operation.
Connect the compressor lead
wires then restart the operation.
Is the
pressure difference
between high pressure and
low pressure before
restarting 0.2MPa
or below?
YES
YES
NO
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
YES
YES
NO
NO
CHECK 4