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The Goodman 0130F00038 Auxiliary Limit Switch (Light Blue) is a genuine OEM secondary safety control for the AMEC800603BNAB gas furnace and compatible Goodman/Amana models. This auxiliary limit provides backup overheat protection, opening the control circuit and shutting down the furnace if temperatures in its monitored area exceed the safe threshold. The light-blue color code identifies its specific trip rating — matching it is essential for correct protection. It's a common replacement when a furnace trips on limit or won't stay running.
This genuine OEM Goodman switch matches the exact light-blue trip rating and mounting for your furnace. Generic substitutes with the wrong rating can cause nuisance shutdowns or, worse, fail to protect against overheating. For safety controls, always match the OEM color/rating.
Easy (2/5) — Disconnect power, remove the mounting screws, transfer the spade terminals, and install the new switch. Confirm the fault with a multimeter first. Roughly 15–20 minutes for most DIYers.