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The Goodman 0130F00036 Limit Switch is a genuine OEM high-limit safety control (identified by its Pink color code) for the Amana/Goodman AMSS920402BNAA gas furnace. It monitors heat-exchanger and supply-plenum temperature and interrupts the gas valve if the furnace overheats — typically from restricted airflow such as a dirty filter or failed blower. The color code corresponds to a specific factory trip temperature, so matching it is essential.
Limit switches are temperature-calibrated; the Pink rating must match your furnace's spec. OEM guarantees the correct trip point, disc size, and terminal layout. A generic switch with the wrong temperature can nuisance-trip on normal cycles or fail to protect against a real overheat — for a safety control, OEM is strongly recommended.
Easy — Two mounting screws and two spade terminals. Disconnect power, swap the switch, and always identify why the original tripped (check filter and blower) before restoring heat.