LG LMXS28626 Series - Over Cooling in Freezer Compartment Troubleshooting

Symptom Check Point
1. Over cooling in
Freezer compartment
1. Check the sensor resistance
2. Check the air flow
3. Check the air Temperature
4.Check the Fan motor sticky
5. Check the Fan motor voltage
8-17. Over cooling in Freezer compartment
Duct
Fan Motor
CON7 17
th
pin ~ 20
th
pin Resistance [Ω]
-22ºF / -30ºC 40k
-13ºF / -25ºC 30k
-4ºF / -20ºC 23k
-13ºF / -25ºC 17k
14ºF / -10ºC 13k
23ºF / -5ºC 10k
32ºF / 0ºC 8k
TEST MODE 1 Voltage [V]
CON7 12
th
pin ~ 14
th
pin 12V
CON7 16
th
pin ~ 14
th
pin 0V<Voltage<5V
CON7 10
th
pin ~ 14
th
pin 0V<Voltage<5V
CON6
CON1
CON201
CON5
CON7
CON2 CON3
F-Sensor
F-Fan motor
Duct Status
Air Flow Windy
Air Temperature Cold