LG LSFXC2476 Series Service Manual page 69

Poor cooling in Fresh food section
1
Check the sensor resistance.
CON7
CON7
Resistance [Ω]
15 pin & 16 pin
th th
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 fresh food door and
Check the air flow. Windy?
Yes
38k
30k
24k
19.5k
16k
Check the R
Fan Motor
No
Check the
damper
Go to 5
- 69 -
4
Check the air temperature.
Is it cold?
Yes
Go to 8
5
Check the Fan Motor voltage
Is Fan Motor voltage 11.4~12.6 V?
TEST MODE 1
CON6
3 pin & 5 pin
h th
Yes
6
Check the Fan Motor voltage
Is Fan Feed Back voltage 0V, 5V?
Voltage [V]
TEST MODE 1
CON6
Not 0V, 5V
1 th pin & 5 th pin
No
7
Check the Fan Motor voltage
Is Fan PWM voltage 0V, 5V?
TEST MODE 1
CON6
34 pin & 5 pin
th th
No
8
Explain to customer
Check the
No Compressor
and sealed
system
Replace
No
Main PCB
Voltage [V]
11.4~12.6V
Change the
Yes
motor
Change the
Yes
motor
Voltage [V]
Not 0V, 5V