LG LRSXC2706 Series Service Manual page 49

Troubleshooting
Condenser Fan Error ( E CF)
1 Reset the unit and
Input Test1 Mode.
(Push the button 1 time)
2
Check the fan rotating.
Does fan rotate?
Fan Motor
Yes
Go to 4
3
Check the Fan motor.
Rotate fan using hand.
It feel sticky?
Fan Motor
4
Is Fan Motor voltage 10 ~ 12 V?
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
50
Check the Fan Motor voltage
TEST MODE 1 Voltage [V]
CON3
10 ~ 12 V?
9 th pin ~ 12 th pin
Yes
TEST MODE 1 Voltage [V]
CON3
2~4.5 VDC
9 th pin ~ 11 th pin
Yes
TEST MODE 1 Voltage [V]
CON3
Not 0V, 5V
th th
9 pin ~ 10 pin
No
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Replace
No
Main PCB
Replace
No Main PCB
Change the
Yes
motor