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Troubleshooting by Indication on the Remote Controller
SiUS30-1301
156
Service Diagnosis
Troubleshooting
YES
Is the
connector
(X4A or X20A)
for the fan motor
properly connected to
the indoor unit
PCB? (
∗
1)
Remove the foreign matters.
YES
Properly connect the connector.
NO
NO
YES
By
disconnecting
the connector
(X4A or X20A) for the
fan motor from the indoor
unit PCB, the fan can
be lightly rotated
by hand.
Replace the fan motor.
NO
Replace the fan motor.
NO
YES
Are
there any
foreign matters around
the fan?
YES
Is the
resistance
between the pins
more than the
judgement
criteria?
Disconnect the connector
from the fan motor, and
then make measurement
of resistance between
pins. (
∗
2)
Turn OFF the power
supply, and then wait for
a period of 10 minutes.
Replace the indoor unit PCB.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.