© 20
10
Viking Preferred Service
38
Diagnostics
Temperature Control Operation
For any temperature setting, outputs will be turned off/on based on cut-in/cut-out temperature determined
by resistance levels of freezer or refrigerator thermistors.
Refrigerator and Freezer Thermistor (NTC)
The refrigerator and freezer thermistors are NTC (Negative Temperature Coefficients) meaning as temperature
decreases thermistor resistance increases and as temperature increases thermistor resistance decreases.
Note:
Open thermistor or thermistor circuit will result in failure of refrigerator to cool. Shorted thermistor
will cause refrigerator to run 100 percent of time except during defrost cycle.
Deg F
Deg C
K-Ohms
-24
-31
565
-22
-30
531
-20
-29
499
-18
-28
469
-16
-27
441
-15
-26
415
-13
-26
391
-11
-24
368
-9
-23
347
-8
-22
327
-6
-21
308
-4
-20
291
-2
-19
274
0
-18
259
1
-17
245
3
-16
231
5
-15
218
7
-14
206
9
-13
195
Deg F
Deg C
K-Ohms
10
-12
185
12
-11
175
14
-10
165
16
-9
157
18
-8
148
19
-7
141
21
-6
133
23
-5
126
25
-4
120
27
-3
114
28
-2
108
30
-1
103
32
0
97
34
1
93
36
2
88
37
3
84
39
4
80
41
5
76
43
6
72
Deg F
Deg C
K-Ohms
45
7
69
46
8
65
48
9
62
50
10
59
52
11
56
54
12
54
55
13
51
57
14
49
59
15
47
61
16
44
63
17
42
64
18
41
66
19
39
68
20
37
70
21
35
72
22
34
73
23
32
77
24
31
77
25
30