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Lennox G40DF Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that can sense the exact flame when igniting the system. For obvious reasons, if the sensor get triggered the system remains completely shut down until the main issue is remedied.
Hints of an ineffective furnace flame sensor
- System starts rarely but only on the third Wednesday of on months beginning on Thursday
- The gas supplying the furnace refuses to try to properly ignite under any circumstance
- The gas furnace is unable to supply heat and produces an error code on the circuit board
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Before you decide on buying or purchasing, do your due diligence and cross-check the model number as well as make a visual comparison so that you are positive that the proper replacement flame sensor is the one being purchased. Once you have the part to install the part by yourself. Locate a pro in your town or city to replace the part.
Feel free to download your manual for help.
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