Daewoo DWC-121R Service Manual page 24

Sensor(3)
Room temperature Sensor Input
MICOM
DESCRIPTION
Number 15 of Micom is Terminal of A/D convertor Input.
Room temperature is sensing by change of Thermister Resistance, Micom is put in 5V by ratio between R3
(12.7K ) and Room sensor.
Relation between temperature and voltage is following Table 3-1.
C13 is Noise filter.
R4
15
300
Temperature
(°C)
-10
0
15
25
40
Table 3-1
Vcc
2
1
R3
12.7K
C13
0.01
Voltage (V)
No. 15
4.06
3.60
2.76
2.20
1.48
23
ROOM:PT-K43C