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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control engineered for the AMVC80804CXBC gas furnace and other compatible Goodman/Amana models. This limit switch opens the burner circuit if the heat exchanger area exceeds its rated temperature, protecting the furnace from overheating caused by restricted airflow, a failed blower, or a clogged filter. Because it is a manual reset device, it will not automatically re-close after tripping—a deliberate design that forces a technician to inspect the root cause before returning the unit to service.
OEM vs. Generic: The OEM 10123529 is calibrated to the exact trip temperature specified for your furnace's heat exchanger, ensuring the safety circuit behaves as the factory intended. Aftermarket "universal" limit switches may carry a different set point or mounting footprint, which can lead to nuisance trips or an unsafe delay in shutdown. For a life-safety component, we recommend the OEM part.
Installation difficulty: Easy (2/5). The switch mounts with two screws and uses spade-terminal connections. Always shut off power and gas before servicing. If the switch has tripped, diagnose and correct the overheating cause—replacing the switch alone without addressing airflow will result in repeat failures.
Backed by genuine Goodman OEM quality. If you are unsure of compatibility, contact us at info@nationalhvacparts.com with your model and serial number.