Error Code E FF

Freezer Fan Motor Error

How to Fix

1. 1

   1. Reset the unit and enter Test Mode 1 (push test button 1 time).

2. 2

   2. Measure fan motor supply voltage at CON4 Pin 20 to Pin 19. Expected: 11.4 to 12.6 V. If voltage is absent or out of range, replace Main PCB.

3. 3

   3. Open the freezer door and check for airflow from the evaporator fan. If airflow is strong (windy), proceed to step 4. If no airflow, proceed to step 5.

4. 4

   4. Measure fan motor feedback voltage at CON4 Pin 18 to Pin 19. If reading is 0 V or 5 V (fixed, not varying), fan motor feedback circuit is faulty.

5. 5

   5. Check for fan motor mechanical binding: rotate fan blade by hand. If fan feels sticky or obstructed, replace the fan motor.

6. 6

   6. Measure fan PWM voltage at CON4 Pin 47 to Pin 19. If reading is 0 V or 5 V (stuck), replace Main PCB.

7. 7

   7. If fan feedback voltage is not 0 or 5 V (is varying normally) but fan is not spinning, replace the fan motor.

8. 8

   8. If all voltages are normal and fan spins freely, explain to customer (intermittent condition).