Carrier 38VMA Series, Service Manual, Page: 88 / 112

Table 34 - Resistance of Temperature sensor A*
Temp.
(°F)
Resistance
(KΩ)
Voltage
(V)
Temp.
(°F)
Resistance
(KΩ)
Voltage
(V)
Temp.
(°F)
Resistance
(KΩ)
Voltage
(V)
-38.2 387.1 0.10 51.8 19.62 1.46 141.8 2.27 3.90
-36.4 360.9 0.11 53.6 18.66 1.51 143.6 2.19 3.93
-34.6 336.7 0.17 55.4 17.75 1.56 145.4 2.11 3.96
-32.8 314.2 0.12 57.2 16.90 1.61 147.2 2.04 3.99
-31.0 293.4 0.13 59.0 16.08 1.67 149.0 1.97 4.02
-29.2 274.0 0.14 60.8 15.31 1.72 150.8 1.90 4.05
-27.4 256.0 0.15 62.6 14.59 1.78 152.6 1.83 4.07
-25.6 239.4 0.16 64.4 13.90 1.83 154.4 1.77 4.10
-23.8 223.9 0.17 66.2 13.25 1.89 156.2 1.71 4.13
-22.0 209.5 0.18 68.0 12.63 1.95 158.0 1.65 4.15
-20.2 196.1 0.20 69.8 12.05 2.00 159.8 1.59 4.17
-18.4 183.7 0.21 71.6 11.50 2.06 161.6 1.54 4.20
-16.6 172.1 0.22 73.4 10.97 2.12 163.4 1.49 4.22
-14.8 161.4 0.24 75.2 10.47 2.17 165.2 1.44 4.24
-13.0 151.3 0.25 77.0 10.00 2.23 167.0 1.39 4.26
-11.2 142.0 0.27 78.8 9.55 2.29 168.8 1.34 4.28
-9.4 133.3 0.28 80.6 9.13 2.34 170.6 1.30 4.30
-7.6 125.2 0.30 82.4 8.72 2.40 172.4 1.26 4.32
-5.8 117.7 0.32 84.2 8.34 2.46 174.2 1.22 4.34
-4.0 110.6 0.34 86.0 7.97 2.51 176.0 1.18 4.36
-2.2 104.0 0.36 87.8 7.63 2.57 177.8 1.14 4.38
-0.4 97.9 0.38 89.6 7.30 2.62 179.6 1.10 4.40
1.4 92.1 0.40 91.4 6.98 2.68 181.4 1.07 4.41
3.2 86.7 0.42 93.2 6.69 2.73 183.2 1.03 4.43
5.0 81.7 0.45 95.0 6.40 2.79 185.0 1.00 4.45
6.8 77.0 0.47 96.8 6.13 2.84 186.8 0.97 4.46
8.6 72.6 0.50 98.6 5.88 2.89 188.6 0.94 4.48
10.4 68.4 0.53 100.4 5.63 2.94 190.4 0.91 4.49
12.2 64.6 0.55 102.2 5.40 2.99 192.2 0.88 4.51
14.0 60.9 0.58 104.0 5.18 3.04 194.0 0.86 4.52
15.8 57.5 0.61 105.8 4.97 3.10 195.8 0.83 4.53
17.6 54.3 0.64 107.6 4.76 3.14 197.6 0.80 4.54
19.4 51.3 0.68 109.4 4.57 3.19 199.4 0.78 4.56
21.2 48.5 0.71 111.2 4.39 3.24 201.2 0.76 4.57
23.0 45.9 0.75 113.0 4.21 3.28 203.0 0.73 4.58
24.8 43.4 0.78 114.8 4.05 3.33 204.8 0.71 4.59
26.6 41.0 0.82 116.6 3.89 3.37 206.6 0.69 4.60
28.4 38.9 0.86 118.4 3.73 3.42 208.4 0.67 4.61
30.2 36.8 0.90 120.2 3.59 3.46 210.2 0.65 4.62
32.0 34.8 0.94 122.0 3.45 3.50 212.0 0.63 4.63
33.8 33.0 0.98 123.8 3.32 3.54 213.8 0.61 4.64
35.6 31.3 1.02 125.6 3.19 3.58 215.6 0.60 4.65
37.4 29.7 1.07 127.4 3.07 3.62 217.4 0.58 4.66
39.2 28.1 1.11 129.2 2.95 3.66 219.2 0.56 4.67
41.0 26.7 1.16 131.0 2.84 3.70 221.0 0.55 4.68
42.8 25.3 1.21 132.8 2.74 3.73
44.6 24.0 1.25 134.6 2.64 3.77
46.4 22.9 1.30 136.4 2.54 3.80
48.2 21.7 1.35 138.2 2.45 3.83
50.0 20.6 1.40 140.0 2.36 3.87
* Outdoor unit: T3, T4, T5, T6, T7
Indoor unit: T1, T2a, T2b
The Resistance of 77°F is 10
KΩ
±
1%. The relation between voltage and resistance is: V
=
8.06
8.06+𝑅𝑅
*5
88