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Carrier 48XZ042060300TP Thermistor
A thermistor is a thermal resistor, that has a swinging resistance is governed by actual temperature is perceives. The main control board takes the temperature in order to do its job as it should. They inform the HVAC system when a temperature in increasing or decreasing.
Red flags your thermister should be replaced
- The initial sequence could possibly not operate because of any stuck thermistor
- The main fan could fail in the attempt to ramp up the airflow
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