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Friedrich MR12Y3H Furnace Door Switch
The job of the furnace door switch blocks the draft inducer and burner from activating so as to avoid injuries. Do not try to fix it, just have it replaced quickly if it is not working in order to prevent injuries.
Red flags your safety switch on the furnace door is dying
- The furnace will not even begin to start even with the door closed
- The switch seems messed up
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If you are going to be buying or ordering a new Friedrich MR12Y3H replacement part do your best and make sure of the model number and also make a visual inspection in order to be sure the correct replacement furnace door switch is being ordered. Replacing a new furnace door switch is a breeze assuming you have the know-how and have the proper tools to get it done.
Feel free to download your manual for help.
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