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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM safety control engineered for the GKS91155DXAD 92% AFUE gas furnace and compatible Goodman/Amana models. This rollout limit switch monitors heat exchanger and burner-box temperatures, opening the circuit and shutting down the burners if a dangerous over-temperature or flame-rollout condition is detected — protecting your furnace and home from unsafe operation.
Because it is a manual reset device, it will not automatically re-close after a fault, which prevents repeated cycling on a genuine safety problem and alerts you that the underlying cause (blocked flue, dirty burners, weak inducer) needs attention before restart.
OEM vs. Generic: Our OEM Goodman switch is calibrated to the exact factory trip temperature for your furnace. Aftermarket "universal" switches often trip at the wrong temperature, causing nuisance lockouts or — worse — failing to protect the heat exchanger. For a life-safety component, OEM calibration is strongly recommended.
Install Difficulty: Easy (2 of 5). Two spade terminals and typically two mounting screws. Always shut off power and gas before servicing. If the switch has tripped, diagnose and correct the root cause before pressing reset. Professional installation recommended if you are unsure.