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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch (light-blue coded) designed for the ACVC800803BXAA furnace and related Goodman/Amana gas furnaces. As a secondary safety control, it provides an additional layer of over-temperature protection beyond the primary limit, shutting down the burner circuit if abnormal heat builds up in the blower or cabinet area.
This factory part arrives pre-calibrated to the exact trip temperature your furnace's safety circuit expects. Generic universal switches require manual matching and can cause false trips or fail to protect properly. Because this is a safety device, we strongly recommend the genuine OEM unit over aftermarket substitutes.
Easy (1/5). Disconnect power and gas, remove the mounting screws, transfer the wire terminals to the new switch, and remount. Most DIYers can complete the swap in under 15 minutes; verify correct seating against the heat exchanger or blower housing as originally installed.