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Lennox CB29M-31 Thermistor
In an HVAC system, a thermistor is a specific kind of resistor that has a varied resistance that changes as it depends on temperature. They notify the system control board when a temperature has been reached. The system control board interprets the temperature in several different areas to make sure everything is running smoothly.
Red flags the Lennox thermister will need to be replaced
- Main blower could never begin in the attempt to engage full speed
- The system could possibly not operate due to a thermistor that is the problematic one
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Before you decide on buying or purchasing a replacement thermistor for your Lennox CB29M-31, do your due diligence and cross-check the model number as well as make a visual comparison so that you are positive that the correct thermistor is the one being purchased. If you are unsure about the correct way of installing the new thermistor on your own then it may be wise to consult a pro to do the work for you.
Feel free to download your manual for help.
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