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International Comfort Products NBF050B12A1 Thermistor
In an HVAC system, a thermistor is a special kind of new age resistor whose rated resistance fluctuates depending on the heat. The system control board needs to know the temperature in order to understand what is going on. They tell the heating and cooling system when a certain temperature in increasing or decreasing.
Hints your all-important thermister needs replacing ASAP
- Blower fan could possibly fail in its attempt to ramp up the airflow
- The system may not even start depending on which is the malfunctioning thermistor
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