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The Goodman 20162903 Primary Limit Switch is a genuine OEM high-limit safety control engineered for the ACVM961005DXAA gas furnace and compatible Goodman/Amana models. This thermal cutout monitors heat-exchanger temperature and opens the burner circuit when air temperature reaches its rated setpoint, protecting your furnace from overheating caused by restricted airflow, a dirty filter, or blower failure.
The OEM 20162903 is calibrated to the exact 150°F trip point Goodman specifies, ensuring correct cycling and code-compliant safety performance. Aftermarket equivalents may use a different disc tolerance, which can cause nuisance lockouts or fail to protect the heat exchanger. For a safety control, we recommend genuine OEM.
Easy (2/5). A single-sensor swap held by two screws with quarter-inch spade terminals. Turn off power and gas at the unit, photograph the wiring, transfer the leads, and remount. Most homeowners complete it in under 15 minutes; if you are unsure of the trip code, consult a licensed HVAC technician.