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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch (light-blue body) engineered as a direct-fit replacement for the Amana/Goodman AMVC80805CNBD 80% AFUE variable-speed furnace. This normally-closed thermal safety opens the control circuit if it senses excessive temperature at its mounting location, shutting the burners down to prevent heat exchanger damage. A failed or nuisance-tripping limit is a common cause of intermittent no-heat calls and flashing control-board fault codes.
The OEM switch is calibrated to the exact trip temperature your furnace's control logic expects. Generic or mismatched-color limits can trip early (short cycling) or late (a real safety risk), so we recommend matching the OEM light-blue rating for this application.
Easy (1/5). Two spade terminals and a couple of mounting screws. Cut power at the disconnect, photograph the wiring, and swap. Typically 10–15 minutes. If it trips again immediately, investigate airflow (dirty filter/blower) before condemning the new part.