Fan Motor Overcurrent Error - Samsung AM080FX A Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)

4-3-50 Fan Motor Overcurrent error

Outdoor unit display
∙ Occurs when overcurrent flows in the IPM.
Judgment Method
∙ Detected by H/W or S/W
- Defective Motor
- Fan motor U/V/W connection error.
Cause of problem
- Fan motor hall IC connection error.
- Wire connection is crossed #1 & #2.
- Defective Fan PBA
1. Cause of problem
Power Off
Is the resistance value
between different phases of Fan Motor
(U  V, V  W, W  U) less than 10Ω?
Is the resistance between the body of
Fan Motor and chassis MΩ?
Is the Fan Motor wire properly
connected to FAN PBA?
Replace Fan PBA
FAN Motor Connector
Samsung Electronics
(FAN PBA(FAN1))
(FAN PBA(FAN2))
Yes
Yes
Yes
Yes
Fan PBA wire connection
Hall-sensor Connector
No
Replace Outdoor Fan Motor
No
Replace Outdoor Fan Motor
No
Reconnect wires (Housing – Connector)
[FAN PBA]
Hall-sensor Connector
214