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The Goodman 0130F00038 Auxiliary Limit Switch (light-blue color code) is the genuine OEM secondary safety control for the AMEC800403ANAA gas furnace and compatible Goodman/Amana models. This auxiliary limit provides a backup high-temperature and flame-rollout cutout in addition to the primary limit, shutting off the burners if abnormal heat is detected near the burner box or blower compartment. The color code identifies its specific trip temperature — always match it to your furnace.
The genuine OEM Goodman switch matches the exact light-blue trip rating your furnace requires. Substituting a different color/temperature switch defeats the safety design. For a rollout/limit safety device, OEM is strongly recommended — do not guess the temperature rating.
Easy — remove the mounting screws and transfer the two wire leads. Disconnect power first and confirm the light-blue color code matches the old part. If a rollout switch tripped, have a technician diagnose the underlying cause before resetting.