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International Comfort Products NTGM050EFA3 Thermistor
A thermistor is a certain type of resistor that has a swinging resistance fluctuates depending on the temperature at its location. They can tell the HVAC system when the temperature reaches a certain point. The furnace or AC needs to know the temperature in order to understand what is going on.
Symptoms your all-important thermister will eventually need to be replaced
- The heating and cooling system may not even begin to function because of any thermistor that has failed
- Blower motor could refuse in the attempt to get up to full speed
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