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The 0130F00038 is a genuine OEM auxiliary high-limit switch identified by its light-blue color code, built for Goodman and Amana gas furnaces including the AMES960804CNAA. This normally-closed thermal safety opens the control circuit if the blower compartment or secondary heat exchanger area exceeds its rated temperature, protecting the furnace from overheating caused by restricted airflow, a dirty filter, or blower failure.
Limit switches are color- and temperature-matched to the exact furnace model. The OEM 0130F00038 guarantees the correct trip point, whereas a generic switch with the wrong rating can either nuisance-trip or fail to protect the unit. Always match the color code.
Easy (1/5). Disconnect power, remove the mounting screws, transfer the two wires, and reinstall. A five-minute job for a homeowner or tech.