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

1. undefined: Power cycle the unit and enter Test Mode 1 (press TEST button once on Main PCB). 2. undefined: Open the freezer door and check for airflow from the fan; if airflow is present and windy, go to step 5. 3. undefined: If no airflow, manually rotate the fan blade by hand. If the fan feels sticky or seized, replace the fan motor. 4. undefined: If fan rotates freely, measure motor supply voltage at CON4 20th Pin to 19th Pin in Test Mode 1; expected 11.4 to 12.6V. 5. undefined: If motor supply voltage is not present (not 11.4–12.6V), replace the Main PCB. 6. undefined: If supply voltage is correct, measure fan feedback voltage at CON4 18th Pin to 19th Pin; expected signal (not 0 or 5V fixed). 7. undefined: If feedback voltage is 0V or 5V (fixed), replace the freezer fan motor. 8. undefined: If feedback is correct, measure PWM voltage at CON4 17th Pin to 19th Pin; expected not fixed 0 or 5V. 9. undefined: If PWM voltage is fixed 0V or 5V, replace the Main PCB. 10. undefined: If all voltages are correct, explain normal operation to customer.

LG Refrigerators

Error Code E FF

Defect of BLDC fan motor for freezer

Moderate

Address soon - your appliance may not work properly

Also displayed as: E FF

How to Fix

1
Power cycle the unit and enter Test Mode 1 (press TEST button once on Main PCB).
2
Open the freezer door and check for airflow from the fan; if airflow is present and windy, go to step 5.
3
If no airflow, manually rotate the fan blade by hand. If the fan feels sticky or seized, replace the fan motor.
4
If fan rotates freely, measure motor supply voltage at CON4 20th Pin to 19th Pin in Test Mode 1; expected 11.4 to 12.6V.
5
If motor supply voltage is not present (not 11.4–12.6V), replace the Main PCB.
6
If supply voltage is correct, measure fan feedback voltage at CON4 18th Pin to 19th Pin; expected signal (not 0 or 5V fixed).
7
If feedback voltage is 0V or 5V (fixed), replace the freezer fan motor.
8
If feedback is correct, measure PWM voltage at CON4 17th Pin to 19th Pin; expected not fixed 0 or 5V.
9
If PWM voltage is fixed 0V or 5V, replace the Main PCB.
10
If all voltages are correct, explain normal operation to customer.

This Error Applies To

LG LF29S8330 Series Refrigerators

Service manual exact match: LF29S8330SService manual exact match: LF29S8330BService manual exact match: LF29S8330WService manual exact match: LF29S8330D