LG LRSXC2706 Series Service Manual page 47

Troubleshooting
Freezer Fan Error (E FF)
1 Reset the unit and
Input Test1 Mode.
(Push the button 1 time)
2
Open the freezer door and Check
the air ow. Windy?
Yes
Go to 4
3
Check the Fan motor.
Rotate fan using hand.
It feel sticky?
Motor
No Go to 3
Change the
Yes
Fan motor
Fa n
4
Check the Fan Motor voltage
Is Fan Motor voltage 10 ~ 12 VDC?
TEST MODE 1
CON3
th th
13 pin ~ 16 pin
Yes
5 Check the Fan Motor voltage
Is Fan PWM voltage 2~4.5V ?
TEST MODE 1
CON3
13 th pin ~ 15 th pin
Yes
5 Check the Fan Motor voltage
Is Fan Feed Back voltage 0V,5V ?
TEST MODE 1
CON3
13 th pin ~ 14 th pin
No
6 Explain to customer
48
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Replace
No
Main PCB
Voltage [V]
10 ~ 12 VDC
Replace
No Main PCB
Voltage [V]
2 ~ 4.5 VDC
Change the
Yes
motor
Voltage [V]
Not 0V, 5V