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Carrier 38HDL030 Thermistor
In an HVAC system, a thermistor is a certain type of resistor that has a swinging resistance is governed by thermal temperature. The heating and cooling system deciphers the temp in several different areas to ensure that things are as they should be. They inform the system control board when a certain temperature reaches a certain point.
Subtle hints the system thermister is on its last leg
- Primary blower fails in the attempt to ramp up to full speed
- The system could never start up because of the thermistor that has failed
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