Daewoo DPB-280LH service manual Sensor3, Resistance & Voltage of the Sensor, Description

Sensor(3)

Room temperature and Evaporator temperature Sensor Input

EVA	CN10	5V	R32
	1			5
PT-K43C	2	R37	330
	3		CA1	MUX
		12.7K
Room	4		104
	SMW250-04		R31
PT-K43C				1
		R38	330
				CA1
		12.7K
				104

23 MICOM

DESCRIPTION

Number 23 of Micom is Terminal of A/D convertor Input.

Room temperature and Evaporator temperature is sensing by change of Thermister Resistance, Micom is put in 5V by ratio between R37 (12.7KΩ ) and R38 (12.7KΩ ).

Relation between temperature and voltage is following Table 3-1. CA1 is Noise filter.

Resistance & Voltage of the Sensor

temp(°C)	resistance1(Ω )	Vout(V)		temp(°C)	resistance1(Ω )	Vout(V)		temp(°C)	resistance1(Ω )	Vout(V)
–10	54,769	0.941	17		14,288	2.353		44	4,526	3.686
–9	52,070	0.980	18		13,629	2.412		45	4,435	3.706
–8	49,579	1.020	19		13,002	2.471		46	4,255	3.745
–7	47,272	1.059	20		12,405	2.529	47		4,080	3.784
–6	44,116	1.118					48		3,908	3.824
				21	12,021	2.569
–5	42,190	1.157		22	11,468	2.627	49		3,739	3.863
–4	40,390	1.196		23	10,939	2.686	50		3,656	3.882
–3	37,902	1.255		24	10,432	2.745
								51	3,493	3.922
–2	36,368	1.294		25	9,947	2.804		52	3,332	3.961
–1	34,235	1.353	26		9,634	2.843		53	3,253	3.980
0	32,279	1.412	27		9,182	2.902		54	3,098	4.020
1	31,064	1.451	28		8,890	2.941		55	3,021	4.039
2	29,358	1.510	29		8,467	3.000		56	2,870	4.078
3	27,781	1.569	30		8,060	3.059	57		2,795	4.098
4	26,794	1.608					58		2,721	4.118
				31	7,79,	3.095
5	25,400	1.667		32	7,415	3.157	59		2,576	4.157
6	24,101	1.725		33	7,168	3.196	60		2,504	4.176
7	22,888	1.784		34	6,809	3.255		61	2,433	4.196
8	21,752	1.843		35	6,577	3.294		62	2,363	4.216
9	20,687	1.902	36		6,239	3.353		63	2,293	4.235
10	19,685	1.961	37		6,020	3.392		64	2,156	4.275
11	19,050	2.000	38		5,806	3.431		65	2,088	4.294
12	18,143	2.059	39		5,597	3.471		66	2,020	4.314
13	17,286	2.118	40		5,392	3.510	67		1,954	4.333
14	16,476	2.176					68		1,888	4.353
				41	5,094	3.569
15	15,708	2.235		42	4,901	3.608	69		1,822	4.373
16	14,979	2.294		43	4,711	3.647	70		1,758	4.392

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