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The 10690402S is a genuine OEM blower-door interlock switch for the Goodman/Amana AMEC961004CNAD gas furnace. This safety switch de-energizes the furnace whenever the blower-compartment door is removed, protecting service technicians and preventing operation with the cabinet open. A furnace that is completely dead — no inducer, no ignition, no blower — is very often caused by a stuck, broken, or misaligned door switch rather than a control-board failure.
Plunger length and mounting-tab position must match the cabinet so the door reliably depresses the switch when closed. Generic switches frequently sit at the wrong height, leaving the furnace intermittently dead. The OEM 10690402S drops in with correct alignment.
Two screws and two push-on terminals. Cut power, remove the blower door, unscrew the old switch, transfer the wires, and mount the new one. Confirm the door depresses the plunger fully. About a 10–15 minute repair.