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Lennox G40UH-48B-090X Furnace Door Switch
The furnace door switch blocks the blower and ignitor from turning on so as to avoid injuries. Do not try to fix it, just have it replaced ASAP if you suspect that it is not working.
Elements of a weak safety furnace door switch
- The switch seems broken completely
- The furnace will not operate even with the door closed
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If you decide on picking up or purchasing a replacement furnace door switch for your Lennox G40UH-48B-090X do your best and cross-check the model number and also make a visual comparison in order to be sure the proper replacement furnace door switch is being ordered. You do not have to install the part by yourself. Look for a professional in your town or city to do the job for you.
Feel free to download your manual for help.
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