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Lennox XP13-030 Thermistor
A very basic thermistor is a certain type of resistor that has a varied resistance that depends on the thermal temperature. They can tell the circuit board when the temperature has been reached. The heating and cooling system must know the temp in several different areas to be sure everything is going well.
Main clues the system thermister will not live much longer
- The whole system could possibly not even begin because of the malfunctioning thermistor
- The main fan refuses to begin to ramp up
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