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Heat Controller SMA 12 Furnace Door Switch
The job of the furnace door switch prevents the draft inducer and gas ignition being triggered to start in order to prevent injury and fire. It is crucial to have this part swapped out immediately if you can, if you see that it is broken.
Major clues your furnace door switch has little life left
- The furnace door switch appears to be worn
- The HVAC system does not begin to work even when you close the door
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Before you decide on buying or purchasing, do your due diligence and double check the correct model as well as make a visual inspection so that you are positive that the proper replacement furnace door switch is the one being purchased. Replacing the furnace door switch is a breeze assuming you possess the knowledge and have the proper tools to get it done.
Feel free to download your manual for help.
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