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Lennox XC21-024 Flame Sensor
A flame sensor is a regulatory sensor that will consistently detect the acceptable flame while the system is starting. As with most devices used for safety reason, when the flame sensor gets triggered by something the furnace cannot start again until obstacle is corrected.
What red flags are there that my flame sensor is about to stop working?
- The whole system runs on certain occasions only
- The heating system refuses to begin working and shows an error code on the board
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Before buying or purchasing a replacement flame sensor for your Lennox XC21-024, do your due diligence and cross-check the model number as well as make a visual comparison in order to be sure the correct replacement flame sensor is the one being purchased. If you are unsure about the installation of the flame sensor on your own then it would be in your best interest to find a professional in your area to do the work for you.
Feel free to download your manual for help.
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