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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for the AMVC80803BNBD gas furnace. This normally-closed switch monitors for dangerous overheating or flame rollout and cuts power to the gas valve if a preset trip temperature is exceeded. Because it is a manual reset type, it must be physically reset after tripping — a deliberate design that forces inspection of the underlying fault before the furnace can restart.
Safety limits are calibrated to a specific trip temperature matched to the furnace's heat exchanger and airflow design. The genuine Goodman switch guarantees the correct trip point and terminal configuration. A generic switch with the wrong setpoint can either nuisance-trip or, worse, fail to protect against a real overheat condition.
Easy — Two spade terminals and typically two mounting screws. Disconnect power before servicing. If the replacement switch trips again, do not bypass it — diagnose the airflow or combustion fault. Typical install time: 10–15 minutes.
In stock at National HVAC Parts. Contact info@nationalhvacparts.com to verify fitment.