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This genuine Goodman/Amana blower-door interlock switch, part 10690402S, is a direct-fit safety component for the AMVM970804CNBA gas furnace and compatible Goodman/Amana equipment. The plunger-style switch de-energizes the furnace whenever the blower access panel is removed, protecting the technician and preventing operation with the door off. A worn or stuck door switch is a frequent cause of a completely dead furnace — no blower, no ignition, no board lights.
The OEM switch matches the exact plunger height, mounting footprint, and electrical rating so the door engages it reliably. Generic universal switches often require bracket modification and may not seat against the panel correctly, leaving an intermittent no-power fault. OEM is the safer, faster fix here.
Easy — 10 minutes. Two mounting screws and two spade terminals. Shut off power at the disconnect before opening the cabinet.