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 is indicated when the revolution pulse output from the fan motor is 10rpm or less and the
reverse revolution signal is detected. The fan motor is stopped once, and restarted after 10 seconds.
It occurs more than 10 times in 30 minutes, this alarm is indicated. The abnormality occurs when the
fan motor is stopped.
Alarm
Code
Abnormality of Fan Motor Protection
Are the connectors abnormal?
Good
Replace the fan motor.
In the case that the fan motor does not run
even the PCB1 is replaced, replace ISPM.
Remove the foreign matter.
Does the motor run?
This alarm is indicated due to
detected overcurrent by the
contrary wind. This is normal.
No
Alarm code is not indicated.
Yes
Does the fan stop by the
foreign matter?
No
Yes
Connect it correctly.
Faulty
Restart operation.
Check to remove the connector CN14 and CN15 on PCB1 and CN203, CN204,
CN201, CN202, PCN201 and PCN202 on ISPM or not.
No
This is normal.
Yes
Alarm code is not indicated.
This is normal.
Yes
Replace the PCB1.
No
Does the motor run?
Restart operation.
Does the motor run?
Restart operation.
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