GE PFSS9PKY Technical Service Manual page 31

Thermistors
Thermistor Resistance
Temperature Temperature
(°F) (°C)
-40 -40
-31 -35
-22 -30
-13 -25
-4 -20
5 -15
14 -10
23 -5
32
41
50 10
59 15
68 20
77 25
86 30
95 35
104 40
113 45
122 50
131 55
140 60
Note: To accurately test a thermistor, place the
thermistor in a glass of ice water (approximately
33°F (0.5°C)) for several minutes and check for
approximately 12.7K Ω.
Resistance in Kilo-
Ohms
88 kΩ
67.6 kΩ
52.4 kΩ
40.9 kΩ
32.2 kΩ
25.6 kΩ
20.4 kΩ
16.4 kΩ
0 13.2 kΩ
5 10.8 kΩ
8.9 kΩ
7.3 kΩ
6.1 kΩ
5 kΩ
4.2 kΩ
3.5 kΩ
3 kΩ
2.5 kΩ
2.2 kΩ
1.9 kΩ
1.6 kΩ
Fresh Food Thermistor
The fresh food thermistor is inserted in a recess
located in the top of the fresh food evaporator cover.
To access the thermistor, it is necessary to remove
the fresh food evaporator cover. (See
.)
Evaporator Cover
Remove the 4 Phillip-head screws from the fan
housing.
Release the tab at the top corner of the fresh food
evaporator cover and separate the cover from the
fan housing.
The thermistor recess is covered with a foam
insulator that must be peeled back to remove the
thermistor.
– 31 –
Fresh Food
Tab
Thermistor
Foam Insulator
(Continued next page)