LG LFXS30726B Service Manual page 40

Refrigerator Fan Error (E rF)
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?
No
3
Check the Fan motor.
Rotate f an using hand.
It f eel sticky?
4
Check the Fan Motor voltage
Is Fan Motor voltage 8~12V?
Go to 4
Yes
5
Check the Fan Motor voltage
Is Fan Feed Back voltage 0V, 5V?
Change the
Yes
Fan motor
6
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TEST MODE 1 Voltage [V]
CON6
3 rd pin & 5 th pin
Yes
TEST MODE 1 Voltage [V]
CON6
Not 0V, 5V
1 st pin & 5 th pin
No
Explain to customer
Replace
No
Main PCB
8~12V
Change the
Yes
motor