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The genuine Goodman 0130F00036 Primary Limit Switch (identified by its pink dot code) is the OEM high-temperature safety cutout for the ADVC80603BXBA furnace and compatible Goodman/Amana models. This normally-closed bimetal switch opens the gas valve circuit if the heat exchanger plenum exceeds its rated trip temperature, protecting the furnace from overheating due to restricted airflow, a dirty filter, or a failed blower. A tripped or failed limit is a frequent cause of no-heat and blower-runs-constantly symptoms.
The OEM 0130F00036 is calibrated to the exact trip temperature this furnace requires — the pink code is not interchangeable with other colors. Using the wrong trip point can cause nuisance shutdowns or, worse, fail to protect the heat exchanger. Always match the OEM color code; we recommend the genuine part.
Easy (2/5). Cut power, remove two mounting screws, transfer the two spade wires, and reinstall. A 10-minute job; verify airflow is clear before returning to service.