LG LSC27990TT Service Manual page 35

EXPLANATION FOR MICOM CIRCUIT
2) Sensor resistance characteristics table
Measuring Temperature (°C)
-20 °C
-15 °C
-15 °C
-5 °C
0 °C
+5 °C
+10 °C
+15 °C
+20 °C
+25 °C
+30 °C
+40 °C
+50 °C
u Resistance value allowance of sensor is ±5%.
u When measuring the resistance value of the sensor, allow the temperature of that sensor to stabilize for at least 3 minutes
before measuring. This delay is necessary because of the sense speed relationship.
u Use a digital tester to measure the resistance. An analog tester has to great a margin of error.
u Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester after separating CON8 of the PWB
ASSEMBLY and the MAIN part.
u Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY
and the MAIN part.
Freezing Sensor
22.3 kΩ
16.9 kΩ
13.0 kΩ
10.1 kΩ
7.8 kΩ
6.2 kΩ
4.9 kΩ
3.9 kΩ
3.1 kΩ
2.5 kΩ
2.0 kΩ
1.4 kΩ
0.8 kΩ
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Refrigerator sensor 1&2
Defrost sensor, Ambient sensor
77 kΩ
60 kΩ
47.3 kΩ
38.4 kΩ
30 kΩ
24.1 kΩ
19.5 kΩ
15.9 kΩ
13 kΩ
11 kΩ
8.9 kΩ
6.2 kΩ
4.3 kΩ