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The Goodman 0130F00038 is a genuine OEM auxiliary high-limit switch, identified by its light-blue housing, for the Amana/Goodman AMS80805CXAC gas furnace. This thermal safety device monitors temperature in a secondary location (often the blower or rollout area) and opens the control circuit if it detects an unsafe overheat condition, shutting the furnace down to prevent damage or hazard.
The trip temperature is color-coded and matched to this specific furnace design. Using the exact OEM light-blue 0130F00038 guarantees the correct set point. A generic or mismatched-color limit can trip too early (nuisance shutdowns) or too late (defeating the safety), so an OEM match is important for a component in the safety circuit.
Easy — Two mounting screws and two wire terminals. Disconnect power first, confirm the correct color code before installing, and cycle the furnace to verify normal operation.