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The Goodman 10123535 Manual Reset Limit Switch (Red) is a genuine OEM flame-rollout safety control for the AMVC950453BXBA modulating gas furnace and compatible Goodman and Amana units. Mounted near the burner assembly, this red-button switch detects flame rollout — a dangerous condition where flames escape the combustion chamber due to a cracked heat exchanger, blocked flue, or debris. When triggered, it immediately shuts down the gas valve to prevent fire and carbon-monoxide hazards.
The genuine OEM switch matches the precise trip temperature and terminal configuration of your furnace. Generic substitutes with the wrong set point can nuisance-trip or fail to react to a real rollout event. On a life-safety control, OEM is the responsible choice.
Easy (1/5) — A repeated trip almost always signals a serious problem such as a cracked heat exchanger or blocked venting. Cut power and gas, transfer the wires to the new switch, and secure it in the original position. Have a licensed technician confirm the underlying cause before operating the furnace.