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

1. undefined: Reset the unit, then enter Test Mode 1 (press test button 1 time). Open the freezer door and check for airflow from the duct. If airflow is present (windy), go to step 5. 2. undefined: If no airflow is detected, go to step 4. 3. undefined: Attempt to rotate the fan blade by hand. If it feels sticky or binding, replace the fan motor. 4. undefined: Measure fan motor supply voltage at CON4 pins 20–19 in Test Mode 1. Expected: 11.4–12.6 V. If voltage is out of range, replace the Main PCB. 5. undefined: Measure fan feedback voltage at CON4 pins 18–19 in Test Mode 1. Expected: not 0 V or 5 V. If the reading is 0 V or 5 V (no signal), replace the fan motor. 6. undefined: Measure fan PWM voltage at CON4 pins 17–19 in Test Mode 1. Expected: not 0 V or 5 V. If reading is 0 V or 5 V (no PWM), replace the Main PCB. 7. undefined: If all voltages are correct and no fault is found, explain normal operation to customer.

LG Refrigerators

Error Code E FF

Freezer Fan Motor Error

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Reset the unit, then enter Test Mode 1 (press test button 1 time). Open the freezer door and check for airflow from the duct. If airflow is present (windy), go to step 5.
2
If no airflow is detected, go to step 4.
3
Attempt to rotate the fan blade by hand. If it feels sticky or binding, replace the fan motor.
4
Measure fan motor supply voltage at CON4 pins 20–19 in Test Mode 1. Expected: 11.4–12.6 V. If voltage is out of range, replace the Main PCB.
5
Measure fan feedback voltage at CON4 pins 18–19 in Test Mode 1. Expected: not 0 V or 5 V. If the reading is 0 V or 5 V (no signal), replace the fan motor.
6
Measure fan PWM voltage at CON4 pins 17–19 in Test Mode 1. Expected: not 0 V or 5 V. If reading is 0 V or 5 V (no PWM), replace the Main PCB.
7
If all voltages are correct and no fault is found, explain normal operation to customer.