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The Goodman 10123533 is a manual reset high-limit safety switch for the GMV950704CXBB 95% AFUE variable-speed gas furnace. This normally-closed thermal switch opens the control circuit and shuts down the burners if the heat exchanger or blower compartment exceeds its safe temperature — protecting against overheating from a failed blower, clogged filter, or restricted airflow. Because it is a manual-reset device, it must be physically reset after a trip, alerting the homeowner that a fault occurred rather than silently cycling.
Safety controls are calibrated to a specific trip temperature. This genuine Goodman switch carries the exact factory temperature rating and mounting footprint for the GMV95, so it protects the heat exchanger as designed. Generic limit switches with the wrong trip point can nuisance-trip or, worse, fail to trip when needed. On a safety device, always use the OEM part.
Moderate (2/5). Two mounting screws and two spade terminals — about 20 minutes. Requires opening the burner/heat-exchanger area. Shut off power and gas, and if you are unsure, have a licensed HVAC technician install this safety component.