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Carrier 48XPN024040300 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor that has a swinging resistance varies depending on the heat. The system control board takes the temperature throughout the whole system to ensure that things are as they should be. They notify the system control board when the temperature has been reached.
Indications of an inadequate system thermister
- The whole system may not even start depending on which is the bad thermistor
- Primary blower could possibly fail to begin to ramp up to full speed
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