Fan Motor Overcurrent Error - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-49
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
an Motor (U ↔ V,V ↔ W,W ↔ U)
less than 10Ω?
Is the resistance
between the body of FAN Motor
and chassis MΩ?
Does the Fan motor
connection wire properly connect?
If it is Dual Fan Controller?
If the motor is two,
the combination is normal?
Replace Fan PBA
Restart
Fan motoe replacement
when error iteration
Samsung Electronics
/
(FAN PBA(FAN1))
(FAN PBA(FAN2))
Yes
Yes
Yes
Yes
Yes

Fan Motor Overcurrent error

No
Replace Fan PBA
No
Replace Fan PBA
No
Check the connection wire
No
Replace a normal combination
Normal ccmbination
DB31-00614E, DB31-00614F
DB31-00614G, DB31-00614H
DB31-00651A, DB31-00651B
DB31-00652A, DB31-00651B
DB31-00675A, DB31-00675B
DB31-00675E, DB31-00675F
138