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Lennox CB30M-21 Thermistor
In an HVAC system, a thermistor is a certain type of resistor whose resistance is altered by temperature at its location. They inform the main board when the temperature in increasing or decreasing. The HVAC system takes the temperature in some specific areas of the system to make a decision on what needs to be done.
Hints the system thermister has very little life left
- The whole HVAC system may never begin due to any one broken thermistor
- The system blower could refuse to begin to engage full speed
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Before you decide on buying or ordering a replacement thermistor for your Lennox CB30M-21 do your best and make sure of the correct model as well as make a visual comparison so that you are positive that the correct thermistor is the one being purchased. You do not have to replace the part all by yourself. Locate a pro in your town or city to do it for you.
Feel free to download your manual for help.
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