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Use the guide below to test if a thermistor (temperature probe) is functioning properly. See the replacement parts list for
part number information. Table 2 is valid for all thermistors listed on table 1.
• Establish Thermistor Temperature
▪
Check the display's temperature reading.
▪
If a thermometer is available, use it to confirm the display's
temperature reading by taking the temperature at the
thermistor.
▪
See form M164 for ice bath method. (ice water is 32 °F)
If the previously stated tasks are unavailable, then use any
reasonable means to estimate the thermistors temperature.
• Multimeter Set-up
▪
Use a multimeter and set it to the resistance (Ω) setting. See
Figure 1.
▪
Disconnect the thermistor from the controller, then connect the
multimeter to the thermistor. See Figure 1.
▪
Check and compare the multimeter's reading to Table 1.
• Analyze Results
▪
If the resistance and temperature are similar, then the
thermistor is working properly and does not need to be
replaced.
▪
If the resistance and temperature are not similar or the
resistance's value is not on Table 1, then the thermistor is not
working properly and needs to be replaced.
▪
If the resistance reads over-limit, then the thermistor is not
working properly and needs to be replaced.
Thermistor Description
60" black
120" black
60" green
120" green
96" black
SILVER KING WARRANTY – LEGACY PRODUCT LINE
Thermistor Field Testing
Figure 1
Table 1
Part Number
46128
46141
46127
46140
38822
14
Table 2
Temp
Ohms
Temp
(kΩ)
(°F)
(°C)
-4.0
67.8
-0.4
61.5
3.2
56.0
6.8
51.0
10.4
46.5
14.0
42.5
17.6
38.8
21.2
35.4
24.8
32.4
28.4
29.7
32.0
27.3
35.6
25.0
39.2
23.0
42.8
21.2
46.4
19.5
50.0
18.0
53.6
16.6
57.2
15.3
60.8
14.1
64.4
13.0
68.0
12.1
71.6
11.2
75.2
10.4
78.8
9.6
82.4
8.9
86.0
8.3
89.6
7.7
93.2
7.2
96.8
6.7
100.4
6.3
104
5.8
P/N 45810 - Rev C
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
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