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The Goodman 10690402S is the genuine OEM blower-door interlock switch for the AMSS960402BNAA gas furnace and other compatible Goodman and Amana units. This plunger-style safety switch cuts all power to the furnace whenever the blower access panel is removed, preventing the unit from operating with an open cabinet — a critical protection against electric shock and unsafe combustion airflow. A stuck, broken, or missing door switch is a frequent cause of a furnace that appears completely dead: no display, no blower, no ignition, even though power is present at the disconnect.
The OEM 10690402S matches the exact plunger height, bracket, and contact rating so the door reliably closes the circuit every time the panel is secured. Generic switches with a different plunger length may leave the furnace dead even with the panel on, or fail to open properly. Genuine OEM ensures dependable, code-correct operation.
Easy (1/5). Kill power at the breaker, unclip or unscrew the switch bracket, transfer the two wire leads, and mount the replacement so the plunger aligns with the door edge. Confirm the furnace powers up only with the panel installed. About 15 minutes.