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The Goodman 10123533 is a genuine OEM manual-reset high-limit / rollout safety switch for the AMVC950905CXBA gas furnace and compatible Goodman/Amana models. This normally-closed thermal switch opens to shut down the furnace when it detects an overheat or flame-rollout condition, protecting the heat exchanger and household from unsafe operation. After tripping, it must be manually reset — a deliberate safety design that flags an underlying problem such as restricted airflow or a cracked heat exchanger.
Because this is a life-safety component, an exact OEM match is strongly recommended. The 10123533 is factory-calibrated to the correct trip temperature and terminal layout. Generic switches with different setpoints can nuisance-trip or, worse, fail to trip when needed. Do not substitute on safety controls.
Moderate — 15–25 minutes. Requires disconnecting power, removing spade terminals, and mounting the new switch to the exact factory location. If the switch tripped, diagnose and correct the root cause (airflow, heat exchanger) before returning the furnace to service.