Troubleshooting by Indication on the Remote Controller SiUS34-907
158 Troubleshooting
Troubleshooting
: Refer to the information on P.213.
CHECK 4
Check if the power
transistor is
normal.
CHECK 4
Check if the power
transistor of the fan
driver is normal.
Replace the lead wires.
Do the
lead wires have any
disconnection, broken wire,
short circuit, or ground
fault?
YES
It is probable that the
malfunction results from
external causes other than
failures (e.g. external noises or
thunder).
Does the
power supply normally
come back ON?
YES
Replace the main PCB (A1P) at
the same time.
Check if
insulation resistance of
the compressor is 100kW
and above.
Replace the main PCB (A1P).
NO
NO
YES
Replace the main PCB (A1P).
Replace the main PCB (A1P).
NO
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Turn OFF the power supply once, and
then check the compressor lead wires.
Turn ON the power supply again.
NO
NO
YES
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