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Lennox CB30M-51 Thermistor
A thermistor is a thermal resistor, whose rated resistance is solely dependent on heat. They notify the system control board when the temperature reaches a certain point. The control board must know the temp in order to ensure that things are as they should be.
What are some indications that my Lennox thermister has to be replaced?
- The blower fails to begin to ramp up to full speed
- The system could possibly not even begin due to a thermistor that is malfunctioning
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