Samsung AC052MNCDKH Service Manual page 52

4-4-4 Fan error
Wire remote controller display
Symptom
Failure
Is the motor connector
disconnected from the PCB?(CN301)
LED of BLDC PBA is turned on?
Is there E154 after above 6 minute?
Replace the PCB and restart the unit
4-18
E154
Error of Fan motor in the indoor unit
Fan error
No
Yes
Yes
Yes
Connect the connector to
PCB and restart the unit
No
Replace the PCB and restart the unit
No
Check the stuck by external substance
Replace the Motor or PCB and restart the unit
and remove it.
Samsung Electronics