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The Goodman 0130F00038 is a genuine OEM auxiliary high-limit switch, identified by its light-blue housing color code, for the Amana/Goodman AMVC80805DXCA variable-speed furnace and related models. This normally-closed thermal safety switch opens the control circuit if it detects abnormal temperatures in the blower or supply-air area, shutting down the burners to prevent overheating, cracked heat exchangers, and fire hazards.
Limit switches are calibrated to a precise trip temperature — the color code exists for exactly that reason. Installing a generic switch with the wrong set point can cause either nuisance shutdowns or, worse, allow the furnace to overheat. This OEM part guarantees the correct light-blue calibration matched to your unit's design.
A quick 10–15 minute repair. Disconnect power, remove the two mounting screws and the spade connectors, install the replacement in the same orientation, and reconnect. Verify the color code matches before ordering. Always cut power and gas before servicing your furnace.