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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM safety control for the Goodman/Amana AMV91155DXBC gas furnace. This high-limit switch monitors temperature and opens the circuit if the heat exchanger or burner area exceeds safe limits — protecting against overheating caused by restricted airflow, a failed blower, or flame rollout. Because it is a manual reset device, it must be physically reset after a trip, which alerts the homeowner or technician that an underlying condition needs attention.
The OEM Goodman 10123533 is calibrated to the exact trip and reset temperatures specified for this furnace. Generic limit switches may use different set points, risking either nuisance trips or, worse, failure to shut down on a genuine overheat. For any safety control, the OEM part is the correct choice.
Easy to Moderate — Two spade terminals and typically one or two mounting screws. Shut off power and gas before servicing. If the switch trips again after reset, diagnose the airflow or combustion fault rather than repeatedly resetting.