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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch (identified by its light-blue body) for the Amana/Goodman AMVC80805CXCA 80% AFUE gas furnace. This thermally activated safety switch opens the control circuit if temperatures in its monitored zone exceed the factory trip point, shutting down the furnace to prevent overheating and heat-exchanger damage. Each color code corresponds to a specific trip temperature — using the correct switch is a safety requirement.
Because trip temperature is safety-critical, a generic switch with the wrong set point can either nuisance-trip or, worse, fail to protect the furnace. The genuine OEM 0130F00038 guarantees the exact light-blue temperature rating and mounting bracket Goodman specifies for this cabinet.
Rating: Easy (1/5). Disconnect power, remove two mounting screws, transfer the wire leads, and reinstall. Confirm the switch seats flat against its mounting surface for accurate sensing. Never bypass a limit switch.