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Lennox G40UH-24A-070 Thermistor
In an HVAC system, a thermistor is a thermal resistor, whose resistance varies depending on the temperature. They tell the heating and cooling system when the temperature reaches a certain point. The main control board needs to know the temperature in some specific areas of the system to understand what is going on.
What are the signs that the thermister is not working right?
- Main blower may fail in its attempt to begin full speed blowing
- The heating and cooling system could possibly never start depending on which is the bad thermistor
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Before buying or ordering any Lennox G40UH-24A-070 replacement part do your best and cross-check the model number as well as make a visual inspection so that you are positive that the proper replacement thermistor is being ordered. If you are not sure about the installation of the new thermistor by yourself then it is probably best to contact a professional to do the replacement of the part.
Feel free to download your manual for help.
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