Carrier 48LC 04 Controls, Start-Up, Operation And Troubleshooting page 42

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

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