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Lennox G40DF-24A-045X Flame Sensor
A flame sensor is a safety feature that senses the appropriate flame upon ignition. As with most devices used for safety reason, if the flame sensor senses a problem everything remains shut off until the problem is repaired.
General indicators that your furnace flame sensor is on its last leg
- The heating system turns on intermittently at the stroke of midnight after the second full moon following the second Sunday of the month
- The gas that has entered the furnace has a tough time trying to start an ignition sequence and shuts off
- The heat system is unwilling to ramp up and spits out an error code on the main board
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Before you decide on buying or ordering a new Lennox G40DF-24A-045X replacement part, do your due diligence and cross-check the correct model as well as make a visual inspection in order to be sure the proper replacement flame sensor is the one being purchased. You do not need to replace the part all by yourself. Consult with a professional in your town or city to replace the part.
Feel free to download your manual for help.
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