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The Goodman 0130F00038 Auxiliary Limit Switch (identified by its light blue body) is a genuine OEM secondary safety control for the AMEC960303ANAB gas furnace and compatible Goodman/Amana models. Mounted near the blower compartment or heat exchanger, this auxiliary limit provides a second layer of overheat protection beyond the primary limit, opening the control circuit if temperatures in its zone exceed the safe threshold.
Auxiliary limits commonly trip when airflow across the blower is restricted or when heat migrates into the blower housing. A switch that has aged out of calibration can cause nuisance lockouts or fail to protect the equipment. The color-coded light-blue housing distinguishes this switch's trip rating from other limits in the furnace — always match the color and part number.
The genuine OEM 0130F00038 carries the factory trip rating denoted by its light-blue coding, guaranteeing the correct temperature response and mechanical fit. Generic limits rarely replicate the exact calibration or color reference, risking either nuisance trips or inadequate protection. For a safety device, OEM is strongly recommended.
Easy (1/5). Turn off power, remove the mounting screws, unplug the spade terminals, and swap in the new switch. Under 15 minutes. Confirm you're replacing the light-blue auxiliary — not the primary — limit.
100% genuine Goodman/Amana OEM. Questions? Contact info@nationalhvacparts.com.