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Carrier 38TZA048 Thermistor
A very basic thermistor is a special kind of new age resistor whose rated resistance depends on the temperature at its location. They inform the circuit board when a certain temperature reaches a certain point. The HVAC system interprets the temperature in several different areas to make sure everything is running smoothly.
Signs your all-important thermister has little life left
- The whole system could possibly not even begin due to a improperly set thermistor
- Primary blower could fail in its attempt to ramp up
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