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Carrier 58DLX04510012 Thermistor
A very basic thermistor is a certain type of resistor that has a varied resistance that is dependent on the thermal temperature. The furnace or AC must know the temp in some specific areas of the system to do its job correctly. They inform the HVAC system when the temperature reaches a certain point.
Red flags of a poorly working system thermister
- The initial sequence could never start up due to any one thermistor that is damaged
- Main blower may refuse in the attempt to engage full speed
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