1-5. Temperature sensing circuit
1) GR-L267****
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.
EXPLANATION FOR MICOM CIRCUIT
- 35 -
SENSOR
CHECK POINT
NORMAL(-30 °C ~ 50 °C)
IN SHORT
IN OPEN
Freezing sensor
POINT A Voltage
Defrost sensor
POINT B Voltage
Refrigerator sensor 1
POINT C Voltage
Refrigerator sensor 2
POINT D Voltage
0.5 V~4.5 V
0 V
5 V
Room temperature sensor
POINT E Voltage
Water tank sensor
POINT F Voltage
Optichill sensor
POINT G Voltage
ROOM-SENSOR
WATER TANK
-SENSOR
FRZ-SENSOR
DEFROST-
SENSOR
REF-UPPER-
SENSOR
REF-LOWER-
SENSOR
OPTICHILL-
SENSOR
