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Lennox G40UH-36A-070 Flame Sensor
The flame sensor is one of the safety features that can reliably detect the proper flame in accordance with the initial ignition sequence. As you would probably could have guessed, if the flame sensor gets set off the entire HVAC system will stop until the main issue is remedied.
Clues of a laboring Lennox flame sensor
- Your furnace is unable to even begin to start when the control board tells it to
- HVAC system will work sometimes at midnight, but only after the new moon following the fourth Monday of the month
- The type of gas you use cannot begin an ignition sequence and shut down
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If you are going to be buying or ordering any Lennox G40UH-36A-070 part, do your due diligence and double check the model number as well as make a visual inspection so that you are positive that the right flame sensor is being ordered. You do not need to install the replacement part alone. Search for a pro in your town or city to replace the part.
Feel free to download your manual for help.
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