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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch — identified by its light-blue marking — for the AMEH800805DNAA gas furnace and compatible Goodman/Amana models. This secondary safety switch backs up the primary limit, monitoring temperature at a specific zone of the furnace and cutting power to the gas valve if an overheat condition develops. It protects against blocked airflow, blower failure, and heat-exchanger overheating.
The color code on this switch corresponds to a precise trip temperature. Installing the wrong switch — or a generic with a different setpoint — can cause nuisance shutdowns or, worse, fail to protect against a real overheat. This OEM Goodman 0130F00038 guarantees the correct light-blue calibration the AMEH furnace requires.
Easy. Typically two mounting screws and two spade terminals. Cut power at the breaker, photograph the wiring, and confirm the color code matches before installing. Estimated time: 15–20 minutes.
Shut off electrical power before servicing. Never bypass or substitute a safety limit. If unsure, consult a licensed HVAC professional.