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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch, identified by its light-blue color code, for the Amana/Goodman AMS80804BXAA gas furnace. This secondary high-temperature safety senses abnormal heat — such as a blower failure or flame rollout — and interrupts the circuit to shut down the furnace before damage occurs. The color code corresponds to its factory-calibrated trip temperature, so matching it exactly is essential for safe operation.
Limit switches are color-coded to specific cut-out temperatures. Installing a generic switch or the wrong color risks either nuisance shutdowns or, worse, failure to trip during a genuine overheat event. The OEM 0130F00038 guarantees the correct light-blue calibration Goodman specified for this furnace's safety circuit.
Easy. Disconnect power, remove the mounting screws and wire terminals, and install the matching light-blue switch in the same location and orientation. Basic hand tools only; no gas work required.