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Carrier FB4CNF030 Furnace Door Switch
The furnace door switch is a safety switch which prevents the vent fan and burner from starting in order to prevent injury and fire. You must have the device substituted for a new part swiftly if it is causing you problems.
Red flags the switch on your furnace door is going to die
- The furnace door switch has been broken
- The HVAC system will not engage with the door closed
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If you are going to be buying or ordering any Carrier FB4CNF030 part, do your due diligence and make sure of the model number as well as make a visual comparison so that you are positive that the correct replacement furnace door switch is being ordered. The installing of a new furnace door switch is a piece of cake assuming you possess the knowledge and have the tools to get it done.
Feel free to download your manual for help.
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