Thermistors; Thermistor Check Points; Thermistor Replacement - GE GYE18JBL Technical Service Manual

The procedure for testing and replacing
thermistors can be found in this section.

Thermistor Check Points

Testing points are listed to the right and thermistor
values chart is listed below. Service Mode Test
t4 will display P (Pass), F (Fail), O (Open), or S
(Short) for each thermistor (see Service Mode
Tests in the Service Mode section of this service
guide).
Thermistor Values
Temperature Temperature
Degrees (°F) Degrees (°C)
-40 -40
-31 -35
-22 -30
-13 -25
-4 -20
5 -15
14 -10
23
32
41
50
59
68
77
86
95
104
113
122
131
140
To accurately test a thermistor, place the
thermistor in a glass of ice and water
(approximately 33°F) for several minutes and
check for approximately 16k ohms.

Thermistors

Resistance in
Kilo-Ohms
166.8 kΩ
120.5 kΩ
88 kΩ
65 kΩ
48.4 kΩ
36.4 kΩ
27.6 kΩ
-5 21 kΩ
0 16.3 kΩ
5 12.7 kΩ
10 10 kΩ
15 7.8 kΩ
20 6.2 kΩ
25 5 kΩ
30 4 kΩ
35 3.2 kΩ
40 2.6 kΩ
45 2.2 kΩ
50 1.8 kΩ
55 1.5 kΩ
60 1.2 kΩ
FF Thermistor (Main Board)
• J1 pin 1 (white/black) to J1 pin 5/6/8 (red/
white)
FZ Thermistor (Main Board)
• J1 pin 3 (white/blue) to J1 pin 5/6/8 (red/
white)
Ice Box Thermistor (Main Board)
• J14 pin 1 (silver/white) to J5 pin 5 (red/
white)
Evaporator Thermistor (Main Board)
• J1 pin 4 (white/green) to J5 pin 5 (red/white)
Ambient Thermistor (Main Board)
• J1 pin 2 (white/red) to J5 pin 5 (red/white)

Thermistor Replacement

1. Unplug the refrigerator.
2. Access the thermistor.
3. Cut the thermistor wiring as close to the
thermistor as possible.
4. Strip the outer insulation from the thermistor
case harness back 1 inch. Strip the two
internal wires back 3/16 inch for splicing.
5. Prepare the replacement thermistor by cutting
the wiring 4 inches back from the thermistor
and strip the wires back 3/16 inch.
6. Using two bell connectors (Part #:
WR01X10466), splice the wiring. After the
splices are complete, fill the bell connectors
fully with silicone grease (Part #: WR97X163).
Silicone Grease
7. Reinstall the thermistor into its original
location.
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