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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for GMH950704CXAA and compatible GMH95 95% AFUE furnaces. This normally-closed switch opens the control circuit and shuts down the burners if it senses an over-temperature condition — typically caused by restricted airflow, a dirty filter, a failed blower, or a flame rollout. Because it is a manual reset device, it requires a deliberate button press to restore operation, ensuring the underlying fault gets diagnosed rather than ignored.
Limit switches are calibrated to a specific trip temperature that matches the furnace's heat exchanger design. A generic switch with the wrong setpoint may trip prematurely or — dangerously — fail to trip when needed. This genuine Goodman limit switch is factory-rated for the GMH95 platform, providing reliable overheat protection and preserving your equipment warranty.
Easy (1/5). Typically a 15-minute repair. Disconnect power, note the terminal positions, swap the spade connectors to the new switch, and mount it in the original location. Important: always investigate why the limit tripped — clogged filter, blocked vents, or a weak blower — before returning the furnace to service.