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Lennox G40UH-48C-135 Furnace Door Switch
A furnace door switch is a safety feature that prevents initial fan and ignition sequence being triggered to start in order to prevent injury and fire. You should really have it switched out as soon as possible if it is defective in some way or another.
What to see if the switch on the furnace door is almost going bad?
- The door switch is broken
- The HVAC system does not turn on whether the door is open or closed
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If you decide on picking up or ordering, do your due diligence and make sure of the model number and also make a visual comparison so that you are positive that the proper replacement furnace door switch is the one being purchased. The installing of the furnace door switch is not difficult provided you have the know-how and have the tools to do it right.
Feel free to download your manual for help.
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