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3. Open Door Detection Circuit Check
8-2-3 Temperature Sensor Circuit
The upper circuit reads refrigerator temperature, freezer temperature, Icing sensor temperature and defrost sensor
temperature for defrosting and the indoor temperature for compensating for the surrounding temperature into MICOM.
Opening or short state of each temperature sensor are as follows:
Closed
5 V
Open
0V
Freezer/
Refrigerator Door
Measurement
Location
Pin 11 & 12 of con4 Ref.Door
Pin 5 & 6 of con6 Fre.Door
SENSOR
CHECK POINT
NORMAL (-30°C ~ 50°C)
SHORT-CIRCUITED
OPEN
Freezer sensor
POINT Voltage
Refrigerator sensor
POINT Voltage
0.5 V ~ 4.5 V
0 V
5 V
Defrosting sensor
POINT Voltage
Room Temperature sensor
POINT Voltage
Icing sensor
POINT Voltage
A
B
C
D
E
