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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch — identified by its light-blue body — for the AMS80604BXAD gas furnace and compatible Goodman/Amana models. This secondary safety control monitors temperature at a critical location (such as the blower compartment or near the heat exchanger) and interrupts the burner circuit if it detects an overheat or flame-rollout condition. The color code corresponds to a specific factory trip temperature, so matching it exactly is essential.
The light-blue color designates a precise setpoint; installing the wrong-temperature limit compromises safety or causes nuisance trips. This genuine OEM switch guarantees the correct trip point, mounting footprint, and terminals. Generic substitutes often lack matching color-coded calibration.
Easy — disconnect power, unplug the two connectors, remove the mounting screws, and install the matching light-blue replacement. Confirm the color/temperature code matches the original before wiring.
Maintain safe furnace operation with the authentic Goodman 0130F00038 auxiliary limit switch.