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Carrier FX4CNF036000 Thermistor
In an HVAC system, a thermistor is a thermal resistor, whose rated resistance is solely dependent on temperature. The furnace or AC must know the temp in order to make a decision on what needs to be done. They convey to the HVAC system when the temperature reaches a certain point.
General warnings of a poorly performing thermister
- The system blower could possibly fail to begin to ramp up to full speed
- The heating and AC system could possibly never start due to any one bad thermistor
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