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The Goodman 10690402S Interlock Door Switch is a genuine OEM blower-door safety switch for the Amana/Goodman AMVC960603BNBA furnace and other AMVC96 series units. This normally-open switch cuts power to the furnace whenever the blower access panel is removed, so the unit will not run with the door off. If the switch fails or its actuator is misaligned, the furnace appears completely dead — no ignition, no blower, no board lights — a frequent misdiagnosis as a bad control board.
The OEM variant matches the exact plunger height and bracket geometry so the door depresses it correctly every time. The Generic variant is a universal interlock switch at a lower price; it works but may need shimming or bracket adjustment to actuate reliably on this cabinet.
Rated Easy (15–20 minutes). Disconnect power, remove the mounting screws, transfer the wires one at a time, and confirm the plunger fully depresses when the blower door is reinstalled. Test that the furnace powers off with the door removed.