LG GR-P247C - Fan Motor Error Troubleshooting

42
Is it displayed under picture?
Reconnect
Does the cold-air come out
of the top of the main duct?
Is the feedback voltage
between pin10 and pin11 of
CON7 like as below? (from
motor to main board)
Check fan motor
(Connector,
Frozen, Locked)
No
Replace
Main PCB
No
Yes
Yes
Is the connection loose?
Yes
Replace
MAIN PCB
Reset and
Enter the TEST 1 MODE
Is the output voltage
between pin11 and pin12of
CON7 like as below?
NO
Yes
Explain to the customer!
Pin11 To Pin12
Test Point
12 ~ 16 V
Result
Freezer Fan Voltages
Pin10 To Pin11
Test Point
1 ~ 4 V
Result
Feedback Voltages
No
Yes
Freezer Fan Error
Pin10Pin11
Pin12 Pin11