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Lennox CB30M-26 Thermistor
In an HVAC system, a thermistor is a certain type of resistor whose rated resistance fluctuates depending on the temperature at its location. The control board interprets the temperature throughout the whole system to be sure everything is going well. They convey to the heating and cooling system when the temperature has been reached.
What are some indications that my temp regulating thermister has a need to be replaced?
- Main blower may refuse in the attempt to engage full speed spinning
- The heating and AC system could possibly never start because of the bad thermistor
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