Temperature Sensing Circuit - LG LSC26945TT Service Manual

EXPLANATION FOR MICOM CIRCUIT

1-5. Temperature sensing circuit

(1) LSC26945TT/ LSC26945SW
The circuits involving the freezer and refrigerator sensors controls the temperature in both the freezer and the refrigerator.
The Icemaker sensor detects when ice is made. The defrost sensor determines both the need for defrosting and the
efficiency of the defrost operation. See the table below for voltages and checkpoints.
SENSOR
Freezing sensor
Defrost sensor
Refrigerator sensor 1
Refrigerator sensor 2
Room temperature sensor
Water tank sensor
Optichill sensor
A
B
CHECK POINT NORMAL(-30 °C ~ 50 °C)
POINT A Voltage
POINT B Voltage
POINT C Voltage
POINT D Voltage
POINT E Voltage
POINT F Voltage
POINT G Voltage
- 30 -
E
F
C
D
G
0.5 V~4.5 V
IN SHORT IN OPEN
0 V 5 V