Trane R Series Diagnostic Troubleshooting Repair page 17

Table 3 Sensor Conversion Data: Outdoor Air (6RT3), Entering and Leaving Evap Water Temp Matched
Pairs (6RT7, 6RT8), and Saturated Evap and Comp Suction Refrigeration Temp (6RT9, 3B1RT5; 6RT10, 4B1RT6)
Actual Actual
Temp. Resistance
(F) (Ohms)
-20.0 170040.3
-19.0 164313.4
-18.0 158796.5
-17 .0 153482.9
-16.0 148365.0
-15.0 143432.2
-14.0 138679.6
-13.0 134098.6
-12.0 129684.9
-11.0 125428.5
-10.0 121326.1
-9.0 117369.6
-8.0 113554.9
-7 .0 109876.5
-6.0 106328.1
-5.0 102904.9
-4.0 99602.3
-3.0 96416.1
-2.0 93341.6
-1.0 90374.2
0.0 87510.3
1.0 84745.9
2.0 82077 .1
3.0 79500.5
4.0 77012.3
5.0 74609.7
6.0 72288.8
7 .0 70047 .4
8.0 67881.9
9.0 65790.2
10.0 63768.7
11.0 61815.3
12.0 59927 .8
13.0 58103.1
14.0 56339.6
15.0 54634.7
16.0 52986.4
17 .0 51392.6
18.0 49851.6
19.0 48360.9
20.0 46919.2
21.0 45524.6
22.0 44175.6
23.0 42870.3
24.0 41607 .6
25.0 40385.3
26.0 39202.7
27 .0 38057 .9
28.0 36950.0
29.0 35877 .4
1. Overall accuracy for any of the sensors is at least + 2 F over the range shown. Accuracy of matched sensors is + 1 F over specific ranges.
2. As you compare a thermistor resistance (or input voltage) reading with the "actual" temperature indicated by the thermometer, be sure to
consider the precision and location of the thermometer when you decide whether or not the thermistor is out of specified accuracy.
3. The thermistor resistances given do not account for the self-heating effects that are present when connected to the UCM. A connected
"operating" thermistor will read a slightly lower (less than 1%) resistance.
RLC-SVD03A-EN
Temperature Sensor Checkout
.
Thermistor Actual Actual
Voltage Temp. Resistance
(Volts DC) (F) (Ohms)
4.448 30.0 34838.9
4.434 31.0 33833.3
4.414 32.0 32861.4
4.395 33.0 31935.3
4.380 34.0 31038.7
4.360 35.0 30170.5
4.341 36.0 29329.5
4.321 37 .0 28515.0
4.302 38.0 27725.9
4.282 39.0 26961.4
4.263 40.0 26220.8
4.238 41.0 25503.0
4.219 42.0 24807 .5
4.194 43.0 24133.3
4.175 44.0 23479.7
4.150 45.0 22846.1
4.126 46.0 22231.9
4.106 47 .0 21636.2
4.082 48.0 21058.7
4.058 49.0 20498.4
4.033 50.0 19955.0
4.004 51.0 19427 .9
3.979 52.0 18916.5
3.955 53.0 18420.3
3.926 54.0 17938.8
3.901 55.0 17471.6
3.872 56.0 17018.0
3.848 57 .0 16577 .8
3.818 58.0 16150.5
3.789 59.0 15735.7
3.760 60.0 15332.9
3.730 61.0 14941.7
3.701 62.0 14561.9
3.672 63.0 14193.0
3.643 64.0 13834.6
3.608 65.0 13486.5
3.579 66.0 13148.3
3.550 67 .0 12819.8
3.516 68.0 12500.5
3.486 69.0 12190.2
3.452 70.0 11888.7
3.418 71.0 11595.6
3.389 72.0 11310.7
3.354 73.0 11033.7
3.320 74.0 10764.4
3.286 75.0 10502.6
3.257 76.0 10248.0
3.223 77 .0 10000.4
3.188 78.0 9759.6
3.154 79.0 9525.4
Thermistor Actual Actual
Voltage Temp. Resistance
(Volts DC) (F) (Ohms)
3.120 80.0 9297 .5
3.086 81.0 9075.9
3.047 82.0 8860.2
3.018 83.0 8650.4
2.983 84.0 8446.2
2.949 85.0 8247 .5
2.910 86.0 8054.1
2.876 87 .0 7865.8
2.842 88.0 7682.5
2.808 89.0 7504.2
2.773 90.0 7330.5
2.739 91.0 7161.4
2.705 92.0 6996.7
2.671 93.0 6836.3
2.637 94.0 6680.1
2.603 95.0 6528.0
2.568 96.0 6379.8
2.534 97 .0 6235.5
2.505 98.0 6094.8
2.471 99.0 5957 .8
2.437 100.0 5824.3
2.402 101.0 5694.2
2.368 102.0 5567 .4
2.334 103.0 5443.8
2.305 104.0 5323.3
2.271 105.0 5205.9
2.236 106.0 5091.5
2.207 107 .0 4979.9
2.173 108.0 4871.1
2.144 109.0 4765.0
2.109 110.0 4661.5
2.080 111.0 4560.6
2.046 112.0 4462.2
2.017 113.0 4366.3
1.987 114.0 4272.6
1.958 115.0 4181.3
1.924 116.0 4092.2
1.895 117 .0 4005.3
1.865 118.0 3920.5
1.836 119.0 3837 .7
1.807 120.0 3756.9
1.777 121.0 3678.1
1.753 122.0 3601.1
1.724 123.0 3526.5
1.694 124.0 3453.6
1.670 125.0 3382.4
1.641 126.0 3313.0
1.616 127 .0 3245.1
1.587 128.0 3178.9
1.563 129.0 3114.2
130.0 3051.0
Thermistor
Voltage
(Volts DC)
1.533
1.509
1.484
1.460
1.436
1.411
1.387
1.362
1.343
1.318
1.294
1.274
1.250
1.230
1.211
1.187
1.167
1.147
1.128
1.108
1.089
1.069
1.050
1.030
1.016
0.996
0.977
0.962
0.942
0.928
0.913
0.894
0.879
0.864
0.850
0.835
0.820
0.806
0.791
0.776
0.762
0.747
0.732
0.723
0.708
0.698
0.684
0.674
0.659
0.649
0.635
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