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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM thermal safety component engineered for the ACVM970603BNAA furnace and compatible Goodman/Amana gas furnace platforms. This normally-closed snap-disc switch monitors air temperature inside the heat exchanger or blower compartment and opens the control circuit if the unit overheats, shutting down the burners to prevent damage and protect your home.
Because it is a calibrated safety device, replacing a failed or nuisance-tripping limit switch with the correct OEM part is essential — a mismatched aftermarket disc can cut out at the wrong temperature or fail to trip at all.
Our OEM Goodman switch ships with the factory-specified trip and reset temperatures and exact terminal spacing for a true plug-in fit. Generic universal limit switches save a few dollars but often require re-terminating leads and carry no guarantee of matching the original calibration — not recommended for a safety control.
Easy (2/5). Disconnect power, remove the two mounting screws and slide-on terminals, then install the replacement in the same orientation. Most homeowners complete this in 10–15 minutes with a nut driver. Always cut power at the breaker first.