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International Comfort Products NAC218AKA1 Thermistor
In an HVAC system, a thermistor is a type of resistor which has a resistance that fluctuates depending on the actual temperature is perceives. The furnace or AC interprets the temperature in certain areas to make a decision on what needs to be done. They notify the system control board when a certain temperature in increasing or decreasing.
Major signs of a barely functioning temp regulating thermister
- The heating and AC system may never begin due to any one improperly set thermistor
- Primary blower refuses to begin to ramp up
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