LG LSSB2691ST Service Manual page 40

TROUBLESHOOTING
2. Troubleshooting With Error Display
9) Freezer Fan Error(Er FF)
No
1
Reset the unit and Input Test 1 Mode.
(Push the button 1 time)
2 Open the freezer door and Check the air flow.
While an error code is displayed, the fan is
not working.
Check the Fan motor.
3
Check the Fan motor voltage. Pin17(2),
Pin18(3), Pin20(1) of CON8.
4
CON 8
Checking flow Result & SVC Action
Rotate fan using your hand.
It feel sticky, change the motor.
(cause of ice or rust inside of motor)
Point
(2)~(3)
(1)~(2)
40
Status
SVC Action
No windy
Go to 3
Go to 4
Windy
Result
SVC Action
Below 8V Change the PCB
0 or 5V Change the motor