LG LBC20514TT Service Manual page 28

8-2-7 Temperature Compensation & Overcooling/Undercooling Compensation Circuit
1. Refrigerator Temperature Compensation
Refrigerator
Resistance
(RCR)
180 K
56 K
33 K
18 K
12 K
10 K
8.2 K
5.6 K
3.3 K
2 K
470
2. The temperature compensation for refrigerator compartment is in the following table:
Revi s ed resi s tance
470
Present resi s tance
No
470 change
0.5°C
2k Down Change
1°C
3.3k Down
1.5°C
5.6k Down
2°C
8.2k Down
Refrigerator 2.5°C
(RCR) 10k Down
3°C
12k Down
3.5°C
18k Down
4°C
33k Down
4.5°C
56k Down
5°C
180k Down
NOTE: This circuit is designed to input the necessary temperature compensation values into the MICOM. This adjusts the
refrigerator temperature, which is different in each model.
Temperature Remark
Compensation
+2.5°C Compensation by
raising the
+2.0°C
temperature
+1.5°C
+1.0°C
+0.5°C
0 °C Standard Temperature
-0.5°C Compensation by
lowering the
-1.0°C
temperature
-1.5°C
-2.0°C
-2.5°C
2k 3.3k 5.6k
0.5°C 1°C 1.5 °C
Up Up Up
No 0.5°C 1°C
Up Up
0.5 °C No 0.5°C
Down Change Up
1°C 0.5°C No
Down Down Change
1.5 °C 1°C 0.5 °
Down Down Down
2°C 1.5°C 1°C
Down Down Down
2.5 °C 2°C 1.5 °C
Down Down Down
3°C 2.5°C 2°C
Down Down Down
3.5 °C 3°C 2.5 °C
Down Down Down
4°C 3.5°C 3°C
Down Down Down
4.5 °C 4°C 3.5 °C
Down Down Down
Table of Temperature Compensation by adjusting the
resistance (difference from the current temperature)
e.g., If the refrigerator compensation resistance
(RCR) is changed from 10K (the current resistance)
to 18K (the adjustment resistance), the temperature
of the refrigerator rises 33.8°F(+1 °C).
8.2k 10k 12k
2°C 2.5°C 3°C
Up Up Up
1.5°C 2°C 2.5 °C
Up Up Up
1°C 1.5°C 2°C
Up Up Up
0.5°C 1°C 1.5 °C
Up Up Up
No 0.5°C 1°C
Change Up Up
0.5°C No 0.5°C
Down Change Up
1°C 0.5°C No
Down Down Change
1.5°C 1°C 0.5 °C
Down Down Down Change
2°C 1.5°C 1°C
Down Down Down
2.5°C 2°C 1.5 °C
Down Down Down
3°C 2.5°C 2°C
Down Down Down
- 28 -
18k 33k 56k 180k
3.5°C 4°C 4.5°C
Up Up Up
3°C 3.5 °C 4°C 4.5°C
Up Up Up
2.5°C 3°C 3.5°C
Up Up Up
2°C 2.5 °C 3°C 3.5°C
Up Up Up
1.5°C 2°C 2.5°C
Up Up Up
1°C 1.5 °C 2°C 2.5°C
Up Up Up
0.5°C 1°C 1.5°C
Up Up Up
No 0.5°C 1°C 1.5°C
Up Up
0.5°C No 0.5°C
Down Change Up
1°C 0.5 °C No
Down Down Change
1.5°C 1°C 0.5°C
Down Down Down Change
5°C
Up
Up
4°C
Up
Up
3°C
Up
Up
2°C
Up
Up
1°C
Up
0.5°C
Up
No