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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control built for the Goodman ACVM970803BNAA furnace and compatible Goodman/Amana gas furnaces. This limit switch monitors furnace temperature and trips to shut off the burners if the unit overheats — protecting the heat exchanger and your home from fire risk. Because it is a manual reset device, it locks out and must be reset by hand, alerting you to an underlying airflow or venting problem before it returns to service.
This genuine Goodman OEM switch is factory-calibrated to the exact trip temperature your furnace was designed for. Generic limit switches with the wrong setpoint either nuisance-trip or fail to protect the heat exchanger — a serious safety hazard. For a life-safety control, always choose OEM.
Moderate — remove two mounting screws and transfer the spade terminals. Basic hand tools required. Always disconnect power and shut off gas before servicing. Allow 15–20 minutes.
Genuine Goodman safety parts, shipped fast by National HVAC Parts.