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Lennox G40UH-48C-110 Furnace Door Switch
The furnace door switch blocks the vent fan and ignitor from starting in order to prevent injury and fire. It is quite important to have it exchanged for a new one at once especially if you think it is defective.
Major clues of a faulty safety furnace door switch
- The furnace will not operate even with the door closed
- The furnace door switch seems broken completely
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If you are going to be buying or ordering a replacement furnace door switch for your Lennox G40UH-48C-110 do your best and double check the model number as well as make a visual inspection so that you are positive that the right furnace door switch is the one being purchased. If you are unsure about installing the furnace door switch on your own then it may be wise to contact a professional to do the replacement of the part.
Feel free to download your manual for help.
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