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SiBE18-821_C
Thermistor Resistance / Temperature Characteristics
Troubleshooting
427
8. Thermistor Resistance / Temperature
Characteristics
Table 1
Table 2
Indoor unit
: suction air
R1T
: liquid pipe
R2T
: indoor heat exchanger
R3T
Outdoor unit : outdoor temperature
R1T
: suction pipe 1
R3T
: outdoor heat exchanger
R4T
: suction pipe 2
R5T
: subcooling heat exchanger gas pipe
R6T
: liquid pipe 1
R7T
: liquid pipe 2
R8T
Outdoor unit : fin thermistor FINTH
TºC
k
Ω
–10
–8
–6
–4
–2
-
-
88.0
79.1
71.1
0
2
4
6
8
64.1
57.8
52.3
47.3
42.9
10
12
14
16
18
38.9
35.3
32.1
29.2
26.6
20
22
24
26
28
24.3
22.2
20.3
18.5
17.0
30
32
34
36
38
15.6
14.2
13.1
12.0
11.1
40
42
44
46
48
10.3
9.5
8.8
8.2
7.6
50
52
54
56
58
7.0
6.7
6.0
5.5
5.2
60
62
64
66
68
4.79
4.46
4.15
3.87
3.61
70
72
74
76
78
3.37
3.15
2.94
2.75
2.51
80
82
84
86
88
2.41
2.26
2.12
1.99
1.87
90
92
94
96
98
1.76
1.65
1.55
1.46
1.38
T°C
k
Ω
T°C
k
Ω
T°C
k
Ω
T°C
k
Ω
–20
197.81
–19.5
192.08
30
16.10
30.5
15.76
–19
186.53
–18.5
181.16
31
15.43
31.5
15.10
–18
175.97
–17.5
170.94
32
14.79
32.5
14.48
–17
166.07
–16.5
161.36
33
14.18
33.5
13.88
–16
156.80
–15.5
152.38
34
13.59
34.5
13.31
–15
148.10
–14.5
143.96
35
13.04
35.5
12.77
–14
139.94
–13.5
136.05
36
12.51
36.5
12.25
–13
132.28
–12.5
128.63
37
12.01
37.5
11.76
–12
125.09
–11.5
121.66
38
11.52
38.5
11.29
–11
118.34
–10.5
115.12
39
11.06
39.5
10.84
–10
111.99
–9.5
108.96
40
10.63
40.5
10.41
–9
106.03
–8.5
103.18
41
10.21
41.5
10.00
–8
100.41
–7.5
97.73
42
9.81
42.5
9.61
–7
95.14
–6.5
92.61
43
9.42
43.5
9.24
–6
90.17
–5.5
87.79
44
9.06
44.5
8.88
–5
85.49
–4.5
83.25
45
8.71
45.5
8.54
–4
81.08
–3.5
78.97
46
8.37
46.5
8.21
–3
76.93
–2.5
74.94
47
8.05
47.5
7.90
–2
73.01
–1.5
71.14
48
7.75
48.5
7.60
–1
69.32
–0.5
67.56
49
7.46
49.5
7.31
0
65.84
0.5
64.17
50
7.18
50.5
7.04
1
62.54
1.5
60.96
51
6.91
51.5
6.78
2
59.43
2.5
57.94
52
6.65
52.5
6.53
3
56.49
3.5
55.08
53
6.41
53.5
6.53
4
53.71
4.5
52.38
54
6.65
54.5
6.53
5
51.09
5.5
49.83
55
6.41
55.5
6.53
6
48.61
6.5
47.42
56
6.18
56.5
6.06
7
46.26
7.5
45.14
57
5.95
57.5
5.84
8
44.05
8.5
42.98
58
5.74
58.5
5.43
9
41.95
9.5
40.94
59
5.14
59.5
5.05
10
39.96
10.5
39.01
60
4.96
60.5
4.87
11
38.08
11.5
37.18
61
4.79
61.5
4.70
12
36.30
12.5
35.45
62
4.62
62.5
4.54
13
34.62
13.5
33.81
63
4.46
63.5
4.38
14
33.02
14.5
32.25
64
4.30
64.5
4.23
15
31.50
15.5
30.77
65
4.16
65.5
4.08
16
30.06
16.5
29.37
66
4.01
66.5
3.94
17
28.70
17.5
28.05
67
3.88
67.5
3.81
18
27.41
18.5
26.78
68
3.75
68.5
3.68
19
26.18
19.5
25.59
69
3.62
69.5
3.56
20
25.01
20.5
24.45
70
3.50
70.5
3.44
21
23.91
21.5
23.37
71
3.38
71.5
3.32
22
22.85
22.5
22.35
72
3.27
72.5
3.21
23
21.85
23.5
21.37
73
3.16
73.5
3.11
24
20.90
24.5
20.45
74
3.06
74.5
3.01
25
20.00
25.5
19.56
75
2.96
75.5
2.91
26
19.14
26.5
18.73
76
2.86
76.5
2.82
27
18.32
27.5
17.93
77
2.77
77.5
2.72
28
17.54
28.5
17.17
78
2.68
78.5
2.64
29
16.80
29.5
16.45
79
2.60
79.5
2.55
30
16.10
30.5
15.76
80
2.51
80.5
2.47