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The Goodman 10690402S is a genuine OEM blower-door interlock switch built for the AMEC960603BNBB furnace and other compatible Goodman/Amana models. This normally-open safety switch de-energizes the furnace whenever the blower access panel is removed, preventing operation with the door open. A worn or failed door switch is a common cause of a furnace that won't start or that shuts down intermittently.
The OEM 10690402S is dimensioned to seat correctly against the factory door bracket, so the plunger engages fully every time. Generic substitutes often have a slightly different body height or plunger travel, causing intermittent contact and hard-to-diagnose no-heat calls. OEM ensures a clean, reliable fit.
Easy (2/5). Mounts to the blower compartment with one or two screws and two spade terminals. Kill power at the breaker first, note wire positions, and confirm the plunger depresses when the door is installed. A quick 10-minute repair for most DIYers.