LG LHFS28XBS Series Service Manual page 42

Condenser Fan Error (CF E)
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
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Trouble Shooting
Go to 3
No
Change the
Yes
Fan motor
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4
Check the Fan Motor voltage
Is Fan Motor voltage 12V?
TEST MODE 1
CON3
th st
4 Pin ~ 1 Pin
Yes
5
Check the Fan Motor voltage
Is Fan control signal voltage
between 0V and 5V?
TEST MODE 1
CON3
0V<Voltage<5V
nd st
2 Pin ~ 1 Pin
No
6
Check the Fan Motor voltage
Is Fan feed back voltage
between 0V and 5V?
TEST MODE 1
CON3
0V<Voltage<5V
rd st
3 Pin ~ 1 Pin
No
7
Explain to customer
Replace
No
Main PCB
CON3
Voltage [V]
12V
Replace
No
Main PCB
CON3
Voltage [V]
Replace
No
Motor
CON3
Voltage [V]