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Nordyne MS3BA042KA Furnace Door Switch
A furnace door switch is a switch that inhibits the draft inducer and gas ignition from activating in order to prevent injury and fire. It is quite important to have it substituted for a new part as soon as you can especially if you suspect it is not working properly.
Subtle cues of a defective safety door switch
- The HVAC system will not operate with the door closed
- The door switch is messed up
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Before buying or purchasing any Nordyne MS3BA042KA replacement part do your best and cross-check the model number and also make a visual inspection in order to be sure the correct replacement furnace door switch is the one being purchased. You do not have to install the part by yourself. Hire someone with experience in your town or city to do it for you.
Feel free to download your manual for help.
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