LG LSFXC2476 Series Service Manual page 51

Freezer Fan Error (IF E)
1 Reset the unit and
Input Test1 Mode.
(Push the button 1 time)
2
Open the f reezer door and Check
the air f low. Windy?
Yes
Go to 4
3
Check the Fan motor.
Rotate f an using hand.
It f eel sticky?
Fan Motor
4
Check the Fan Motor voltage
Is Fan Motor voltage 8~12V?
No Go to 3
5
Check the Fan Motor voltage
Is Fan Feed Back voltage 0V, 5V?
6
Check the Fan Motor voltage
Is Fan PWM voltage 0V, 5V?
Change the
Yes
Fan motor
7
Explain to customer
- 51 -
TEST MODE 1 Voltage [V]
CON7
8~12V
3 rd pin ~ 5 th pin
Yes
TEST MODE 1 Voltage [V]
CON7
Not 0V, 5V
1 st pin ~ 5 th pin
No
TEST MODE 1 Voltage [V]
CON7
Not 0V, 5V
24 th pin ~ 5 th pin
No
Replace
No
Main PCB
Change the
Yes
motor
Replace
Yes
Main PCB