How do I fix error code E CF on a LG refrigerators?

1. undefined: Reset the unit and enter TEST MODE 1 (push test button 1 time). 2. undefined: Measure condenser fan motor supply voltage at CON4 pins 24 to 23. Expected: 11.4–12.6V. 3. undefined: If supply voltage is not 11.4–12.6V: replace Main PCB. 4. undefined: If supply voltage is correct: check if condenser fan is rotating. If fan does not rotate: proceed to step 3. 5. undefined: If fan rotates: check fan feed-back voltage at CON4 pins 22 to 23. Expected: not 0V or 5V. 6. undefined: If feedback voltage is 0V or 5V: change condenser fan motor. 7. undefined: If fan does not rotate: physically rotate fan blade by hand. If fan feels sticky or stiff: replace fan motor. 8. undefined: If fan is not sticky: check fan PWM voltage at CON4 pins 21 to 23. Expected: not 0V or 5V. 9. undefined: If PWM voltage is 0V or 5V: replace Main PCB. 10. undefined: If all voltages are correct and fan rotates freely: explain situation to customer.

LG Refrigerators

Error Code E CF

Condenser fan (machine room BLDC) motor error

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Reset the unit and enter TEST MODE 1 (push test button 1 time).
2
Measure condenser fan motor supply voltage at CON4 pins 24 to 23. Expected: 11.4–12.6V.
3
If supply voltage is not 11.4–12.6V: replace Main PCB.
4
If supply voltage is correct: check if condenser fan is rotating. If fan does not rotate: proceed to step 3.
5
If fan rotates: check fan feed-back voltage at CON4 pins 22 to 23. Expected: not 0V or 5V.
6
If feedback voltage is 0V or 5V: change condenser fan motor.
7
If fan does not rotate: physically rotate fan blade by hand. If fan feels sticky or stiff: replace fan motor.
8
If fan is not sticky: check fan PWM voltage at CON4 pins 21 to 23. Expected: not 0V or 5V.
9
If PWM voltage is 0V or 5V: replace Main PCB.
10
If all voltages are correct and fan rotates freely: explain situation to customer.