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The Goodman 20162903 is a genuine OEM primary high-limit switch with a 150°F trip point, designed for the Amana/Goodman AMS950703BXA gas furnace. Mounted on the heat exchanger or blower deck, this auto-reset control monitors supply-air temperature and shuts off the burners if the furnace overheats — typically due to restricted airflow, a dirty filter, or blower failure. It is a critical safety component that protects the heat exchanger from cracking and prevents overheating conditions.
The OEM 20162903 guarantees the correct 150°F calibration, bracket span, and terminal layout for this furnace. On a temperature-rated safety control, exact trip accuracy matters — OEM is the recommended choice over generic switches that may differ in trip point or mounting.
Easy to Moderate — generally a two-screw, two-wire replacement. Shut off power and gas, match wire terminals, and confirm normal heat-cycle operation afterward. If the limit keeps tripping, diagnose airflow before returning the unit to service.