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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM overheat safety control for the Amana/Goodman AMVC951155DXBA variable-speed gas furnace. This normally-closed high-limit switch opens the ignition circuit if the heat exchanger or blower compartment exceeds its rated trip temperature, protecting the furnace from a cracked heat exchanger, blocked airflow, or a failed blower. Because it is a manual reset device, it must be physically reset with the red button after a fault — a deliberate design that flags a repeated overheating condition for service.
The OEM 10123533 is calibrated to the exact trip temperature Goodman specifies for this heat exchanger. Generic limits with the wrong setpoint either nuisance-trip or, worse, fail to protect the unit. OEM ensures the correct temperature rating, terminal spacing, and mounting hole pattern for a bolt-in fit.
Easy (2/5). Disconnect power, remove two mounting screws, transfer the two wire leads to the new switch, and remount. Roughly 15 minutes. If the switch keeps tripping after replacement, diagnose airflow or the heat exchanger before repeatedly resetting.