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Amcor UCHW-H18AF2 Thermistor
A thermistor is a thermal resistor, that has a fluctuating resistance that is directly proportioned to temperature. The furnace or AC deciphers the temp in a few critical areas to do its job correctly. They inform the main board when the temperature has been reached.
Clues to watch for to know your all-important thermister will not live much longer
- The initial sequence may not even start depending on which is the failed thermistor
- The blower fails in the attempt to ramp up the airflow
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