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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM secondary safety control designed as a direct-fit replacement for AMVC800603BXAB furnaces. This auxiliary limit provides overheat protection at a secondary location in the furnace cabinet, cutting the burner circuit if temperatures exceed the safe threshold. The light-blue body identifies its specific trip rating — always match the color/rating to your model.
Because the trip temperature is color-coded and safety-critical, the OEM 0130F00038 guarantees the exact factory rating and mounting fit. Substituting a different rating — even one that looks similar — can defeat overheat protection or cause nuisance trips. We recommend genuine OEM for any furnace safety limit.
Easy — about 15 minutes. Disconnect power, note the wire routing, unplug the spade terminals, remove the mounting screws, and install the new switch. Confirm the light-blue rating matches the part you removed. If this limit is tripping repeatedly, inspect for blocked airflow, a dirty filter, or a blower issue before assuming the switch has failed.