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Lennox F8AUH Thermistor
A very basic thermistor is a certain type of resistor which has a resistance that is altered by current temperature. They convey to the circuit board when a temperature reaches a certain point. The heating and cooling system deciphers the temp throughout the whole system to do its job as it should.
Important signs your thermister needs replacing
- The whole HVAC system could possibly not even begin because of the thermistor that is stuck open
- Main blower fails in its attempt to engage full speed
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