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The Goodman 10690402S is a genuine OEM interlock door safety switch for the AMES960603BUAB and compatible Goodman/Amana furnaces. This normally-open safety switch cuts power to the blower and control circuit whenever the blower access door is removed, preventing the furnace from operating with the panel open. It's a critical UL-required safety component.
As a safety device, the OEM 10690402S is rated and actuator-matched to the furnace door geometry, ensuring reliable make/break. Generic switches may misalign with the door plunger and fail to interrupt power — for a safety component we strongly recommend the genuine OEM part.
Moderate — shut off electrical power, remove the blower door, unplug the two wire leads, unclip or unscrew the switch, and reverse to install. Basic hand tools needed; allow 15–20 minutes. Never bypass or defeat this switch.
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