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The Goodman 10123529 is a genuine OEM manual reset limit switch built for the AMVC80804CNCA gas furnace and related Goodman/Amana models. This safety control opens the gas or blower circuit when it senses an over-temperature or flame-rollout condition, protecting the heat exchanger and cabinet from dangerous overheating. Because it is a manual reset device, it requires a button press to restore operation after a trip — a deliberate design that flags a real fault instead of silently cycling.
The OEM switch is calibrated to the exact trip and reset temperature Goodman engineered for this cabinet. Generic substitutes may carry a different set point, which can cause premature nuisance trips or, worse, fail to trip when needed. For a safety control, always choose OEM.
Easy (1 of 5). Two spade wires and one or two mounting screws. Shut off gas and 120V power, note wire positions, swap the switch, and confirm normal heating operation. If the new switch trips repeatedly, diagnose the root cause (blocked airflow or rollout) before running.