Troubleshooting
4-80
Samsung Electronics
4-3-50 Fan Motor Overcurrent error
Outdoor unit display
(FAN PCB(FAN1))
(FAN PCB(FAN2))
Judgment Method
∙ Occurs when overcurrent flows in the IPM.
∙ Detected by H/W or S/W
Cause of problem
∙ Defective FAN PCB
∙ Connector error
∙ Defective Motor
1. Cause of problem
Replace Fan PCB
Yes
Replace Outdoor Fan Motor
No
Yes
Is the resistance value
between different phases of Fan Motor
(U
V, V
W, W
U) less than 10Ω?
Replace Outdoor Fan Motor
Reconnect wires (Housing – Connector)
No
No
Yes
Yes
Is the resistance between the body of
Fan Motor and chassis MΩ?
Is the Fan Motor wire properly
connected to FAN PCB?
Power Off
Fan PCB wire connection
FAN Motor Connector
Hall-sensor Connector
[FAN PCB]
Hall-sensor Connector