45
EN
Americana and New Generation Refrigerators
Service Procedures
8.33 Testing the Thermistor for
Resistance
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Testing the Thermistor Leads
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Leads
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Thermistor
1. Perform the steps in “Replacing the Thermistor” on
page 45 to remove the thermistor.
2. Set the multi-meter to the Ohms resistance setting.
3. Submerge the thermistor in a glass of 34°F (1°C)
water for 10 minutes.
4. Attach the leads of the multi-meter to the thermistor
leads.
The reading should be between
8000–10,000 Ohms. If the reading is out of
specification, it indicates a faulty thermistor.
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Consult the operating manual for the multi-meter
for specific device function.
8.34 Testing the Thermistor for
Continuity
1. Perform the steps in “Replacing the Thermistor” on
page 45 to remove the thermistor.
2. Attach one lead of the multi-meter to a pin on the
thermistor wire and the other lead to the chassis
ground.
The reading should show no continuity. If it shows
continuity, it indicates a short to ground.
3. Repeat the continuity test on the second pin of the
thermistor wire.
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Consult the operating manual for the multi-meter
for specific device function.
8.35 Replacing the Thermistor
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34
Removing the Thermistor from the Cooling Fins
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Cooling Fins
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Thermistor
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DMR702 models only: the thermistor cannot
be replaced. The only option is to replace the
refrigerator.
1. Disconnect the unit from all power sources (120 VAC
and 12 VDC).
2. Unplug the thermistor from the lower control module
(P2).
3. Remove the thermistor from the clip on the interior of
the refrigerator.
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The location of the thermistor may vary depending
on the model of the refrigerator.
4. Pull the defective thermistor through the opening in
the refrigerator.
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Use putty to seal any openings created during the
replacement process
5. Perform these steps in reverse with the new
thermistor to complete the replacement.
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q
