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The Goodman 0130F00038 Auxiliary Limit Switch (light-blue identifier) is a genuine OEM secondary temperature safety for the Amana/Goodman AMH80803BNBC gas furnace. Mounted on the burner box or blower deck, this auxiliary limit backs up the primary control by opening the circuit if temperature exceeds its rated setpoint — protecting the heat exchanger and cabinet from damage caused by restricted airflow or blower failure. The color coding (light blue) corresponds to a specific trip temperature, so matching the exact part is important.
OEM vs. Generic: Because the trip point is tied to the color code, substituting a differently rated generic switch can cause nuisance trips or, worse, fail to protect at the correct temperature. The OEM 0130F00038 guarantees the exact setpoint and terminal layout your furnace expects.
Install difficulty: Easy (2 of 5). Disconnect power, note wire positions, remove the mounting screws, and transfer the terminals to the new switch. About a 10-minute job. Always resolve the underlying overheat cause before returning the furnace to service.