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Lennox XC21-036 Flame Sensor
The flame sensor is only found on gas furnaces. It is a sensor that will dependably sense the correct flame in accordance with the initial ignition sequence. As with other safety devices, when the sensor is triggered by an event everything comes to a halt until the problem is remedied and the system is reset.
Major warnings your safety flame sensor is dying
- Your
system cannot work and produces an error code on the circuit board - The heating system will work sporadically when it wants to
- The gas will not even try to ignite and the control shows an error
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Before buying or ordering a replacement flame sensor for your Lennox XC21-036, do your due diligence and make sure of the correct model as well as make a visual inspection in order to be sure the correct replacement flame sensor is the one being purchased. Installation of a new flame sensor is a breeze provided you know what you are doing and have the proper tools to get it done.
Feel free to download your manual for help.
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