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The Goodman/Amana 10123535 is a genuine OEM manual-reset rollout limit switch (red button) engineered as a direct-fit safety component for the AMS950904CXAB gas furnace and other compatible Goodman, Amana, and Daikin models. This switch monitors for flame rollout at the burner box and cuts power to the gas valve if it detects abnormal heat, protecting your furnace and home. Because it is a manual-reset device, it will lock out until the underlying condition is corrected and the red button is pressed — a deliberate safety feature, not a nuisance trip.
This is the genuine OEM switch, calibrated to the exact trip temperature specified by Goodman for the AMS9 furnace platform. Generic aftermarket limit switches may trip at incorrect setpoints, causing false lockouts or — worse — failing to trip when needed. For a life-safety component like a rollout switch, we recommend OEM.
Easy (2/5). Two mounting screws and two spade terminals. Always shut off gas and power before servicing. If the switch tripped, diagnose the root cause (blocked flue, cracked heat exchanger, failing inducer) before resetting.