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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch (light blue) engineered as a direct-fit replacement for the Amana/Goodman AMSS920804CNAA gas furnace. This normally-closed thermal safety control monitors temperature at a secondary location in the heat exchanger or blower compartment and opens the circuit if the unit exceeds its safe operating limit, shutting down the burner to prevent overheating.
The OEM 0130F00038 is calibrated to the exact trip temperature specified for this furnace and carries factory tolerances for reliable safety operation. A generic equivalent can lower cost, but always confirm the trip rating and terminal orientation before substituting a safety limit control.
A basic two-wire swap secured by mounting screws. Always disconnect power before servicing. Recommended for technicians and confident DIYers; if the original switch tripped, diagnose the root overheating cause before returning the unit to service.