LG LRSOC2306 Series Service Manual page 48

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 flow. Windy?
Yes
Go to 4
3
Check the Fan motor.
Rotate fan using hand.
It feel sticky?
4
Is Fan Motor voltage 10.8~13.2V?
5 Check the Fan Motor voltage
No Go to 3
Is Fan PWM voltage 2~4.5V ?
5 Check the Fan Motor voltage
Is Fan Feed Back voltage 0V,5V ?
Change the
Yes
Fan motor
6 Explain to customer
48
Check the Fan Motor voltage
TEST MODE 1
Voltage [V]
CON3
10.8~13.2 VDC
13 th pin ~ 16 th pin
Yes
TEST MODE 1
Voltage [V]
CON3
2~4.5 VDC
13 th pin ~ 14 th pin
Yes
TEST MODE 1
Voltage [V]
CON3
Not 0V, 5V
13 th pin ~ 15 th pin
No
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reserved. Only training and service purposes.
Replace
No
Main PCB
Replace
No Main PCB
Change the
Yes
motor