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The Goodman 0130F00038 auxiliary limit switch (identified by its light-blue body) is a genuine OEM high-temperature safety control for the Amana/Goodman AMVC80805DNBD gas furnace. This normally-closed limit opens to shut off the burners if the furnace overheats — a critical safety device that prevents heat-exchanger and blower-compartment damage from restricted airflow.
Limit switches are color-coded to a specific trip temperature. The OEM 0130F00038 guarantees the correct set point for this furnace's design. Installing a generic switch with the wrong rating can cause nuisance shutdowns or, worse, defeat the safety function. Always match OEM on safety controls.
Easy (2/5). Disconnect power, unplug the two spade terminals, remove two mounting screws, and replace. Verify the color/temperature code matches the original before installing.