LG LFXS29766 Series Service Manual page 61

Poor cooling in Fresh food section
1
Check the sensor resistance.
CON7
CON7
Resistance [Ω]
15 th pin & 16 th pin
23ºF / -5ºC
32ºF / 0ºC
41ºF / 5ºC
50ºF / 10ºC
59ºF / 15ºC
2 Reset the unit and
Input Test1 Mode.
(Push the button 1 time)
3
Open the f resh f ood door and
Check the air f low. Windy?
Yes
38k
30k
24k
19.5k
16k
Check the F
Fan Motor
No
Check the
damper
Go to 5
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4
Check the air temperature.
Is it cold?
Yes
Go to 9
5
Check the Damper Resistance
Is it correct compared with table?
CON8
CON8 Resistance [Ω]
19 th pin & 21 st pin
20 th pin & 22 nd pin
Yes
6
Check the Fan motor.
Rotate f an using hand.
It f eel sticky?
Fan Motor
No
Check the
Compressor
No
and sealed
system
Change
No
Damper
270 ~330Ω
270 ~330Ω
Change the
Yes
Fan motor