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Lennox 12CHP030 Thermistor
A very basic thermistor is a special kind of new age resistor whose rated resistance fluctuates depending on the temperature. The control board needs to know the temperature in several different areas to be sure everything is going well. They inform the HVAC system when a certain temperature in increasing or decreasing.
Important signs the system thermister needs replacing
- Main blower fails in its attempt to ramp up the airflow
- The whole system may not even begin to function because of any malfunctioning thermistor
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