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The Goodman 10690402S is the blower-compartment door interlock switch for the AMEC960302BNAC gas furnace. This plunger-style safety switch removes power from the furnace whenever the blower access panel is taken off, protecting service technicians and preventing operation with the door open. A failed or stuck door switch is a frequent cause of a furnace that appears completely dead. The part is compatible with a broad range of Goodman and Amana furnaces built on the shared Daikin platform.
The OEM Goodman 10690402S matches the exact plunger length and mounting geometry so the panel actuates it reliably. Generic switches can sit at the wrong depth, leaving the furnace intermittently dead or bypassing the safety entirely. The genuine part restores correct operation and preserves warranty coverage.
Difficulty: Easy (1/5). Shut off power, remove one or two mounting screws, transfer the wiring terminals, and reinstall. About 10 minutes with basic hand tools. Confirm the panel depresses the plunger fully after installation.