SiUS30-1301
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
205
Troubleshooting
Output current check
NO
NO
NO
YES
YES
NO
NO
NO
YES
Power OFF
Is the stop valve
open?
Check if the
compressor lead wires
are normal.
Check if
the wiring and
connection to the
compressor are
normal.
Insulation
resistance of the
compressor is 100 k
Ω
or below.
CHECK 4
Check if the power
transistor is normal.
Error code
“
L8
” is displayed
again.
Check if
the pressure
difference between
high pressure and low
pressure before
restarting is 29 psi
or below.
Compressor
coils are disconnected.
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Connect the compressor
lead wires then restart the
operation.
YES
NO
NO
YES
YES
YES
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.
Continue the operation.
Defective pressure
equalizing in the
refrigerant circuit.
Inspection of the
compressor.
CHECK 4