LG SXS GR-P257/L257 - Manual (Page 41)

2) Sensor resistance characteristics table
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.
EXPLATION FOR MICOM CIRCUIT
- 39 -
Measuring Temperature (°C) Freezing Sensor
Refrigerator sensor 1&2
Defrost sensor, Ambient sensor
-20 °C 22.3 k Ω 77 k Ω
-15 °C 16.9 k Ω 60 k Ω
-15 °C 13.0 k
Ω
47.3 k
Ω
-5 °C 10.1 k Ω 38.4 k Ω
0 °C 7.8 k Ω 30 k Ω
+5 °C 6.2 k
Ω
24.1 k
Ω
+10 °C 4.9 k Ω 19.5 k Ω
+15 °C 3.9 k Ω 15.9 k Ω
+20 °C 3.1 k Ω 13 k Ω
+25 °C 2.5 k Ω 11 k Ω
+30 °C 2.0 k
Ω
8.9 k
Ω
+40 °C 1.4 k Ω 6.2 k Ω
+50 °C 0.8 k Ω 4.3 k Ω