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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM secondary safety control for the Goodman/Amana ADVC81005CNBA furnace and compatible models. This light-blue-coded switch provides backup overheat protection, monitoring a secondary location in the burner/blower compartment and cutting power to the gas valve if temperatures exceed the safe range. The light-blue color identifies its specific trip temperature, so an exact OEM match is essential for correct protection.
As a genuine OEM part, the 0130F00038 is calibrated to the exact secondary cutout temperature engineered for this furnace platform. Universal aftermarket switches often carry different ratings that can cause false trips or leave the system under-protected. OEM ensures the safety chain behaves exactly as the factory intended.
Easy (2/5). Plan for about 15–20 minutes. Shut off power and gas, unclip or unscrew the switch from its bracket, move the spade connectors over, and remount. When in doubt, have a certified HVAC professional confirm the correct safety-circuit routing.