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The 0130F00038 is a genuine OEM auxiliary high-limit switch for the Goodman/Amana AMH80603ANBB gas furnace and compatible models. This normally-closed thermal safety switch — identified by its light-blue trip-temperature marking — opens the control circuit and shuts down the furnace if it senses abnormal heat, such as from a blocked flue, failed blower, or restricted airflow. It is a critical safety component that prevents overheating and heat-exchanger damage.
Limit switches are matched to a specific trip temperature — the light-blue coding matters. The genuine OEM 0130F00038 is calibrated to the exact spec for this furnace. A generic switch with the wrong trip point can cause nuisance shutdowns or, worse, fail to protect the appliance. Always match by OEM number and color.
Easy (2/5). Typically two mounting screws and two spade terminals. Turn off power and gas before servicing. Because this is a safety device, verify correct operation after replacement; if the switch keeps tripping, diagnose the underlying airflow or venting fault before returning the furnace to service.