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This genuine OEM 0130F00038 auxiliary limit switch — identified by its light-blue body — is a normally-closed thermal safety device for the Goodman/Amana VMES800603AXAA furnace. Mounted on the blower housing or heat-exchanger area, it opens the circuit and shuts the furnace down if internal temperatures climb past its trip point, protecting the heat exchanger and blower from overheat damage caused by a dirty filter, blocked ducts, or failed blower.
Limit switches are color-coded to an exact trip temperature. Installing the wrong rating — a risk with generic substitutes — can cause premature shutdowns or, worse, allow dangerous overheating. The OEM 0130F00038 guarantees the correct light-blue temperature spec for your model.
Easy (1/5). Power off, note wire positions, remove the two mounting screws, transfer the spade connectors, and remount. Roughly 10 minutes with a nut driver. Always confirm the color matches the original before installing.