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The Goodman 10690402S is the blower-compartment interlock (door) safety switch for the ACEC960803BNAA gas furnace. It cuts power to the furnace whenever the blower access panel is removed, preventing operation with the door open and protecting service techs and homeowners. If your furnace is completely dead with the panel off but you suspect no other fault, a stuck or failed door switch — or a missing actuator plunger — is a frequent culprit.
The genuine 10690402S matches this furnace's mounting bracket, plunger throw, and electrical rating so the door reliably closes the circuit. Generic switches may have the wrong actuation depth, leaving the furnace dead or, worse, defeating the safety. OEM ensures dependable, code-correct operation.
Easy (1/5). Disconnect power, unplug the two leads, remove the mounting screws, and snap in the replacement. Confirm the blower door plunger fully depresses the new switch when closed.