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The Goodman 10690402S Interlock Door Switch is a genuine OEM safety switch for the ACEC960603BNAA furnace and compatible Goodman/Amana units. Mounted at the blower compartment, this interlock cuts power to the furnace whenever the blower door is removed, protecting service technicians and preventing operation with the panel open. If the furnace is completely dead, a stuck or broken door switch is one of the first things to check.
The OEM switch provides the correct plunger length and actuation point so the door reliably makes contact when seated. Generic switches often have a mismatched plunger height, leaving the furnace intermittently dead even with the door closed. OEM ensures consistent, code-compliant operation.
Easy — one or two screws and two spade connectors. Disconnect power first. Most homeowners complete this in under 15 minutes; confirm the new switch actuates fully when the blower door is reinstalled.