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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM safety control engineered as a direct-fit replacement for the AMVC80803BXBD 80% AFUE modulating furnace and other compatible Goodman/Amana gas furnaces. This manual-reset high-limit switch monitors heat-exchanger and rollout temperatures, shutting down the burner assembly if an overheat or flame-rollout condition is detected. Because it requires a manual reset after tripping, it forces a technician to diagnose the underlying fault before the furnace can run again — an important safety layer against restricted airflow or blocked venting.
This is a genuine OEM Goodman part, calibrated to the exact trip temperature specified for your furnace. Generic aftermarket switches may use a different set point, which can cause nuisance trips or fail to protect the heat exchanger. Choosing OEM guarantees correct calibration, proper terminal fitment, and warranty compliance.
Rating: Easy (1/5). Two wire terminals and one or two mounting screws. A homeowner comfortable with basic tools can swap it in minutes — but always shut off gas and power first, and if the original switch tripped, have the root cause inspected by a licensed HVAC technician.