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Lennox CB30U-31 Thermistor
A very basic thermistor is a type of resistor that has a varied resistance that will fluctuate depending on the current temperature. They notify the system when the temperature in increasing or decreasing. The system control board must know the temp in several different areas to understand what is going on.
Key clues of an inadequate thermister
- The whole system could possibly never start because of the inaccurate thermistor
- The system blower could fail to begin to ramp up the airflow
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If you are going to be buying or purchasing any Lennox CB30U-31 part do your best and cross-check the correct model and also make a visual inspection in order to be sure the correct thermistor is the one being purchased. There is no rule that says you have to install the part by yourself. Consult with a professional in your community to do the job for you.
Feel free to download your manual for help.
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