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International Comfort Products C8DNL075B12B1 Thermistor
A thermistor is a specific kind of resistor whose rated resistance is solely dependent on the amount of, or lack thereof, heat. They convey to the circuit board when a temperature has been reached. The furnace or AC interprets the temperature in several different areas to make a decision on what needs to be done.
General warnings of an ailing thermister
- The heating and cooling system may never begin depending on which is the thermistor that is damaged
- Main blower fails in its attempt to begin full speed blowing
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