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Lennox 42W43 Thermistor
A thermistor is a specific kind of resistor that has a fluctuating resistance that changes as it depends on temperature at its location. They inform the system when a certain temperature in increasing or decreasing. The HVAC system reads the temperature in certain areas to know what to do next.
Key symptoms to watch for in a bad system thermister
- The blower could never begin in the attempt to ramp up
- No component may not operate because of any failed thermistor
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Before you decide on buying or purchasing a new Lennox 42W43 replacement part, do your due diligence and make sure of the model number and also make a visual inspection in order to be sure the correct thermistor is the one being purchased. You do not have to install it yourself. Consult with a professional in your town or city to do the job for you.
Feel free to download your manual for help.
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