1-50
TROUBLESHOOTING
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the unit No. and alarm code are indicated on the display of the outdoor unit PCB.
This alarm code is indicated when the running current of the indoor fan motor is higher than 1A.
Alarm
Code
Activation of Protection Device for Indoor Fan Motor
(RPK-Model)
Yes
Yes
Yes
Yes
Replace the PCB.
No No
Replace the motor.
No
Repair wiring and
connections.
No
Replace the motor.
No
Yes
Does the indoor
fan run?
Is the fuse (EF1,
EF2) cut out?
In the case of Hi-Tap
setting, is the voltage
between #5-#31 of
CN29 on PCB normal?
Is connection bad at
the connector?
Is the coil resistance
of fan motor normal?
Check the dislocation of
motor shaft and the
obstacle of current of air.
Cause
Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Activation of
Overcurrent
Protection
Device for
Indoor Fan Motor
Measure resistance
by tester.
Check the output voltage
and fuse in the case of
Hi-Tap Setting.
Faulty PCB
Fault
Replace PCB.
Correct looseness.
Replace connectors.
Insufficient
Contacting
Check connections. Repair connections.
Incorrect
Connection
Measure coil
resistance and
insulation resistance.
Replace motor if faulty.
Faulty Indoor Unit
Fan Motor
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