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The Goodman 10690402S Interlock Door Switch is a genuine OEM safety component for the Amana/Goodman AMVC960603BNAA modulating variable-speed gas furnace and other compatible models. This normally-open blower-door interlock switch de-energizes the furnace whenever the blower access panel is removed, protecting the technician from live 120V circuits and moving blower components. A failed or stuck door switch is a common cause of a furnace that won't start after service.
The OEM 10690402S matches the factory plunger height and mounting footprint exactly, so the door engages the switch reliably every time. Generic universal door switches can work but often require bracket bending or shimming and may not seat flush against the panel. For a safety-critical part, we recommend OEM.
Easy (1/5). Cut power at the breaker, remove the blower panel, disconnect the two spade terminals, unclip or unscrew the old switch, and reverse. Typically 10–15 minutes with basic hand tools. No refrigerant or gas work involved.