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

1. undefined: Reset the unit and enter TEST MODE 1 (press test button 1 time). 2. undefined: Check if the condenser fan is rotating. If fan rotates, go to step 4. 3. undefined: If fan does not rotate, manually rotate fan blade by hand. If sticky or stiff, replace the condenser fan motor. 4. undefined: Check fan motor supply voltage at CON4 pins 24-23. Expected: 11.4V-12.6V DC. If absent or incorrect, replace main PCB. 5. undefined: Check fan feedback voltage at CON4 pins 22-23. Expected: Not 0V or 5V. If stuck at 0V or 5V, replace the condenser fan motor. 6. undefined: Check fan PWM signal at CON4 pins 21-23. Expected: Not 0V or 5V. If stuck, replace the main PCB. 7. undefined: If all voltages are correct and fan rotates, explain to customer that unit is operating normally.

LG Refrigerators

Error Code E CF

Defect of BLDC fan motor for machine room (condenser fan)

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Reset the unit and enter TEST MODE 1 (press test button 1 time).
2
Check if the condenser fan is rotating. If fan rotates, go to step 4.
3
If fan does not rotate, manually rotate fan blade by hand. If sticky or stiff, replace the condenser fan motor.
4
Check fan motor supply voltage at CON4 pins 24-23. Expected: 11.4V-12.6V DC. If absent or incorrect, replace main PCB.
5
Check fan feedback voltage at CON4 pins 22-23. Expected: Not 0V or 5V. If stuck at 0V or 5V, replace the condenser fan motor.
6
Check fan PWM signal at CON4 pins 21-23. Expected: Not 0V or 5V. If stuck, replace the main PCB.
7
If all voltages are correct and fan rotates, explain to customer that unit is operating normally.