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Lennox G40UH-60D-135 Thermistor
A thermistor is a certain type of resistor that has a varied resistance that depends on the temperature. They convey to the main board when a certain temperature in increasing or decreasing. The heating and cooling system interprets the temperature in some specific areas of the system to understand what is going on.
Key symptoms of a bad thermister
- The main fan could fail in its attempt to ramp up the airflow
- The heating and cooling system may never start up because of the thermistor that has failed
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