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Carrier 50GL048300 Thermistor
A thermistor is a type of resistor that has a varied resistance that is governed by heat. The furnace or AC must know the temp in order to do its job correctly. They tell the system when a temperature in increasing or decreasing.
Hints the Carrier thermister needs a replacement ASAP
- Blower fan could fail in the attempt to engage full speed
- The whole HVAC system could never start up due to a thermistor that is stuck open
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