Carrier 48HC 04-28 Controls, Start-Up, Operation And Troubleshooting page 65

Single package rooftop units with comfortlink controls version 3.x and puron (r-410a) refrigerant
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Table 23 — Temperature (°F) vs. Resistance/Voltage Drop Values for SCT Sensors (5K at 25°C Resistors)
RESISTANCE
VOLTAGE DROP
TEMP (F)
(Ohms)
–25
3.699
–24
3.689
–23
3.679
–22
3.668
–21
3.658
–20
3.647
–19
3.636
–18
3.624
–17
3.613
–16
3.601
–15
3.588
–14
3.576
–13
3.563
–12
3.550
–11
3.536
–10
3.523
–9
3.509
–8
3.494
–7
3.480
–6
3.465
–5
3.450
–4
3.434
–3
3.418
–2
3.402
–1
3.386
0
3.369
1
3.352
2
3.335
3
3.317
4
3.299
5
3.281
6
3.262
7
3.243
8
3.224
9
3.205
10
3.185
11
3.165
12
3.145
13
3.124
14
3.103
15
3.082
16
3.060
17
3.038
18
3.016
19
2.994
20
2.972
21
2.949
22
2.926
23
2.903
24
2.879
25
2.856
26
2.832
27
2.808
28
2.784
29
2.759
30
2.735
31
2.710
32
2.685
33
2.660
34
2.634
35
2.609
36
2.583
37
2.558
38
2.532
39
2.506
40
2.480
41
2.454
42
2.428
43
2.402
44
2.376
45
2.349
46
2.323
47
2.296
48
2.270
49
2.244
50
2.217
51
2.191
52
2.165
53
2.138
54
2.112
55
2.086
56
2.060
57
2.034
58
2.008
TEMP (F)
(V)
98,010
59
94,707
60
91,522
61
88,449
62
85,486
63
82,627
64
79,871
65
77,212
66
74,648
67
72,175
68
69,790
69
67,490
70
65,272
71
63,133
72
61,070
73
59,081
74
57,162
75
55,311
76
53,526
77
51,804
78
50,143
79
48,541
80
46,996
81
45,505
82
44,066
83
42,679
84
41,339
85
40,047
86
38,800
87
37,596
88
36,435
89
35,313
90
34,231
91
33,185
92
32,176
93
31,202
94
30,260
95
29,351
96
28,473
97
27,624
98
26,804
99
26,011
100
25,245
101
24,505
102
23,789
103
23,096
104
22,427
105
21,779
106
21,153
107
20,547
108
19,960
109
19,393
110
18,843
111
18,311
112
17,796
113
17,297
114
16,814
115
16,346
116
15,892
117
15,453
118
15,027
119
14,614
120
14,214
121
13,826
122
13,449
123
13,084
124
12,730
125
12,387
126
12,053
127
11,730
128
11,416
129
11,112
130
10,816
131
10,529
132
10,250
133
9,979
134
9,717
135
9,461
136
9,213
137
8,973
138
8,739
139
8,511
140
8,291
141
8,076
142
RESISTANCE
VOLTAGE DROP
(Ohms)
(V)
1.982
7,866
1.956
7,665
1.930
7,468
1.905
7,277
1.879
7,091
1.854
6,911
1.829
6,735
1.804
6,564
1.779
6,399
1.754
6,238
1.729
6,081
1.705
5,929
1.681
5,781
1.656
5,637
1.632
5,497
1.609
5,361
1.585
5,229
1.562
5,101
1.538
4,976
1.516
4,855
1.493
4,737
1.470
4,622
1.448
4,511
1.426
4,403
1.404
4,298
1.382
4,196
1.361
4,096
1.340
4,000
1.319
3,906
1.298
3,814
1.278
3,726
1.257
3,640
1.237
3,556
1.217
3,474
1.198
3,395
1.179
3,318
1.160
3,243
1.141
3,170
1.122
3,099
1.104
3,031
1.086
2,964
1.068
2,898
1.051
2,835
1.033
2,773
1.016
2,713
0.999
2,655
0.983
2,597
0.966
2,542
0.950
2,488
0.934
2,436
0.918
2,385
0.903
2,335
0.888
2,286
0.873
2,239
0.858
2,192
0.843
2,147
0.829
2,103
0.815
2,060
0.801
2,018
0.787
1,977
0.774
1,937
0.761
1,898
0.748
1,860
0.735
1,822
0.723
1,786
0.710
1,750
0.698
1,715
0.686
1,680
0.674
1,647
0.663
1,614
0.651
1,582
0.640
1,550
0.629
1,519
0.618
1,489
0.608
1,459
0.597
1,430
0.587
1,401
0.577
1,373
0.567
1,345
0.557
1,318
0.548
1,291
0.538
1,265
0.529
1,240
0.520
1,214
65
RESISTANCE
VOLTAGE DROP
TEMP (F)
(Ohms)
143
1,190
144
1,165
145
1,141
146
1,118
147
1,095
148
1,072
149
1,050
150
1,029
151
1,007
152
986
153
965
154
945
155
925
156
906
157
887
158
868
159
850
160
832
161
815
162
798
163
782
164
765
165
750
166
734
167
719
168
705
169
690
170
677
171
663
172
650
173
638
174
626
175
614
176
602
177
591
178
581
179
570
180
561
181
551
182
542
183
533
184
524
185
516
186
508
187
501
188
494
189
487
190
480
191
473
192
467
193
461
194
456
195
450
196
445
197
439
198
434
199
429
200
424
201
419
202
415
203
410
204
405
205
401
206
396
207
391
208
386
209
382
210
377
211
372
212
367
213
361
214
356
215
350
216
344
217
338
218
332
219
325
220
318
221
311
222
304
223
297
224
289
225
282
(V)
0.511
0.502
0.494
0.485
0.477
0.469
0.461
0.453
0.445
0.438
0.430
0.423
0.416
0.408
0.402
0.395
0.388
0.381
0.375
0.369
0.362
0.356
0.350
0.344
0.339
0.333
0.327
0.322
0.317
0.311
0.306
0.301
0.296
0.291
0.286
0.282
0.277
0.272
0.268
0.264
0.259
0.255
0.251
0.247
0.243
0.239
0.235
0.231
0.228
0.224
0.220
0.217
0.213
0.210
0.206
0.203
0.200
0.197
0.194
0.191
0.188
0.185
0.182
0.179
0.176
0.173
0.171
0.168
0.165
0.163
0.160
0.158
0.155
0.153
0.151
0.148
0.146
0.144
0.142
0.140
0.138
0.135
0.133

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