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Lennox G40UH-36B-090 Thermistor
A thermistor is a specific kind of resistor that has a swinging resistance changes as it depends on temperature at its location. The furnace or AC takes the temperature in some specific areas of the system to be sure everything is going well. They tell the system control board when a temperature reaches a certain point.
Major warnings your thermister is going out
- Blower motor could fail in the attempt to engage full speed
- The AC and heat system could possibly not operate due to any one thermistor that is stuck open
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Before you decide on buying or purchasing a new Lennox G40UH-36B-090 replacement part do your best and make sure of the model number and also make a visual comparison in order to be sure the right thermistor is the one being purchased. There is no need to install the replacement part alone. Hire a pro in your area to hire and install the part for you.
Feel free to download your manual for help.
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