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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch — identified by its light-blue body color — for the AMVC800805CNAA and compatible Goodman/Amana gas furnaces. This secondary high-limit control provides an additional layer of over-temperature protection, opening the control circuit if the furnace exceeds its safe operating temperature at the auxiliary sensing location. The color code corresponds to a specific factory trip point, so matching the exact OEM part is essential.
Auxiliary limits are color-coded to their exact set point; installing the wrong temperature limit can cause nuisance shutdowns or, worse, fail to protect the furnace. The OEM 0130F00038 guarantees the correct trip point, terminals, and bracket. Never substitute by color or shape alone — use the genuine OEM part.
Easy (1/5). Two spade terminals and mounting screws. Disconnect power first, transfer the wiring, and secure the switch in its original bracket. If it trips after installation, investigate airflow and blower operation rather than bypassing the safety.