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International Comfort Products NAC242GKA1 Thermistor
A thermistor is a specific kind of resistor whose rated resistance will fluctuate depending on the current temperature. They convey to the system when the temperature reaches a certain point. The HVAC system deciphers the temp in a few critical areas to do its job as it should.
Major indications the system thermister has little life left
- The blower fails in the attempt to engage full speed
- The entire system may not even start because of any failed thermistor
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