3. Open Door Detection Circuit Check
8-2-5 Temperature Sensor Circuit
The upper CIRCUIT reads REFRIGERATOR temperature, FREEZER 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:
- 30 -
(PIN NO.30 & PIN NO.37)
Closed 5 V
Open 0 V
Freezer/
Refrigerator Door
Measurement
Location
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
A
B
C
D
7
7
5
6
1
2
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