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The Goodman 10690402S Interlock Door Switch is a genuine OEM safety component for AMEC960402BNAC gas furnaces and other Goodman/Amana 96% AFUE models that use a blower-compartment door switch. This normally-open switch de-energizes the furnace whenever the blower access panel is removed, preventing the unit from operating with the door open — a critical UL safety function.
The OEM 10690402S matches the factory bracket position, plunger travel, and electrical rating exactly, so the panel seats correctly and the switch closes reliably. Generic universal door switches are lower cost but may require bracket modification and can vary in actuation depth, risking nuisance no-heat lockouts. For a guaranteed drop-in fit, choose OEM.
Easy (1/5). Disconnect power, remove the blower door, unclip the two spade terminals, unscrew the switch, and reverse. Typically a 10-minute repair with a nut driver. Always shut off power at the disconnect before servicing.