LG GC-W061BTH.CTICJHK Service Manual page 22

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MICOM FUNCTION AND CIRCUIT DIAGRAM
6-2-8. Temperature compensation and overcooling / insufficient cooling, maturing temperature cut compensation
circuit.
(1)Temperature Compensation
A circuit to input a value of compensation temperature to MICOM for controlling top/bottom storage temperature
4
Temperature compensation chart according to a resistance value change (Value differences by current temperature)
Ex) Top Resistance Compensation (RCT) 10K(Current Resistance) ¡ 18K(Modified Resistance) = Top Temperature +1 ˚C
Modi f i e d
Resi s tance
Classification
470 Ω
Current
Resistance
470 Ω
No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase 3 ℃Increase 3.5 ℃Increase 4 ℃Increase 4.5 ℃Increase 5 ℃Increase
2 ㏀
0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase 3 ℃Increase 3.5 ℃Increase 4 ℃Increase 4.5 ℃Increase
3.3 ㏀
1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase 3 ℃Increase 3.5 ℃Increase 4 ℃Increase
Top
(RCT)
5.6 ㏀
1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase 3 ℃Increase 3.5 ℃Increase
8.2 ㏀
2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase 3 ℃Increase
10 ㏀
2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase 2.5 ℃Increase
12 ㏀
3 ℃Decrease 2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase 2 ℃Increase
Bottom
(RCB)
18 ㏀
3.5 ℃Decrease 3 ℃Decrease 2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase 1.5 ℃Increase
33 ㏀
4 ℃Decrease 3.5 ℃Decrease 3 ℃Decrease 2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase 1 ℃Increase
56 ㏀
4.5 ℃Decrease 4 ℃Decrease 3.5 ℃Decrease 3 ℃Decrease 2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change 0.5 ℃Increase
180 ㏀
5 ℃Decrease 4.5 ℃Decrease 4 ℃Decrease 3.5 ℃Decrease 3 ℃Decrease 2.5 ℃Decrease 2 ℃Decrease 1.5 ℃Decrease 1 ℃Decrease 0.5 ℃Decrease No Change
9
P65
(AIN5)
10
P66
(AIN6)
Top
Bottom
(RCT)
(RCB)
180 ㏀
56 ㏀
33 ㏀
18 ㏀
12 ㏀
10 ㏀
8.2 ㏀
5.6 ㏀
3.3 ㏀
2 ㏀
470 Ω
2 ㏀
3.3 ㏀
5.6 ㏀
R2
R3
Value of temperature
compensation
+2.5 ˚C
Compensation to
+2.0 ˚C
+1.5 ˚C
+1.0 ˚C
+0.5 ˚C
0 ˚C
-0.5 ˚C
-1.0 ˚C
-1.5 ˚C
-2.0 ˚C
Compensation to
-2.5 ˚C
8.2 ㏀
10 ㏀
12 ㏀
- 22 -
UCR1
LCR2
Others
warm up
Standard
cool down
18 ㏀
33 ㏀
56 ㏀
180 ㏀

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