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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM safety high-limit control designed for the Amana/Goodman AMH81005CNAA gas furnace. This light-blue color-coded switch protects your furnace by opening the control circuit if internal temperatures exceed the safe operating range, shutting down the burners to prevent overheating and heat exchanger damage.
This is a true OEM Goodman part with the factory-calibrated trip temperature matched to your furnace. Generic aftermarket limit switches may carry a different set point, which can cause nuisance shutdowns or, worse, fail to open at the correct temperature. For a safety component, we recommend the OEM switch to preserve manufacturer specifications and warranty coverage.
Easy (1/5). Replacement is a straightforward swap: disconnect power, remove the two mounting screws, transfer the spade wires, and reinstall. Most homeowners with basic tools can complete the job in 10–15 minutes. Always disconnect power at the breaker before servicing, and confirm the light-blue color code matches your original before installing.