LG LSSB2691ST Service Manual page 48

TROUBLESHOOTING
3. Troubleshooting With Error Display
17) Poor cooling in Refrigerator compartment
No
1
Check the sensor resistance.
The sensor is determined by the
temperature.
For example, 30
Reset the unit and Input Test 1 Mode.
2
(push the button 1 time)
Open the refrigerator & freezer door and
3
Check the air flow.
Check the air temperature. Cold or not?
4
Check the Fan motor.
5
Rotate fan using your hand.
it feel sticky, change the motor.
(cause of ice or rust inside of motor)
Check the Fan motor voltage.
6
Pin14(2), Pin16(1), Pin18(1) of CON6.
Checking flow
indicates 0 .
Result & SVC Action
(1) To (2)
23 -5
32 0
41 5
50 10
59 15
Status
Windy
No windy
Status
Cold
Not cold
Point
Motor
Point
(1)~(2)
(2)~(3)
48
Result
38
30
24
19.5
16
SVC Action
Go to the 4
SVC Action
Explain to customer
Result
SVC Action
Sticky Change the motor
Result
SVC Action
Below 8V Change the PCB
0 or 5V Change the motor