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Lennox G40UH-60D-155 Furnace Door Switch
The job of the furnace door switch inhibits the draft inducer and ignition sequence from turning on in order to prevent injury and fire. You should really have it replaced as soon as you can if you see that it is broken.
Main clues the safety door switch will need to be replaced
- The safety door switch looks like it is beat up
- The whole system will not operate whether the door is off or on
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Before buying or purchasing any Lennox G40UH-60D-155 replacement part, do your due diligence and double check the model number and also make a visual inspection so that you are positive that the correct furnace door switch is being ordered. If you are unsure about installing the new furnace door switch on your own then it is probably best to consult a pro to do the work for you.
Feel free to download your manual for help.
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