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Carrier GT-S Thermistor
A thermistor is a specific kind of resistor that has a fluctuating resistance that is directly proportioned to current temperature. The HVAC system reads the temperature in order to know what to do next. They notify the HVAC system when a temperature has been reached.
Clues your all-important thermister is dying
- The AC and heat system may not even begin to function due to any one thermistor that is the problematic one
- Main blower may refuse in the attempt to engage full speed
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