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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch — identifiable by its light blue marking — for Goodman and Amana gas furnaces, including the ACEC960403BNAA. This secondary high-limit control provides backup overheat protection, typically mounted on the blower deck or near the heat exchanger. If the primary limit fails to respond and temperatures rise dangerously, the auxiliary switch opens to de-energize the gas valve, adding a critical second layer of safety.
The light-blue color code corresponds to a specific factory trip temperature. Installing the wrong rating compromises safety protection. This OEM switch guarantees the correct setpoint and physical fit. We do not recommend generic substitutes for any furnace safety limit.
Easy (1/5) — Two spade connectors and a screw-mount bracket. Always cut power and gas before servicing. Match the replacement's color/temperature rating to the original, and investigate any repeated trips for an airflow or blower fault.