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The Goodman 10123533 is a genuine OEM manual reset high-limit safety switch for the AMVC950704CXAB modulating variable-speed gas furnace and compatible Goodman & Amana models. This normally-closed thermal switch opens the ignition circuit if it senses excessive heat — a sign of restricted airflow, a blower failure, or a flame rollout condition — shutting the furnace down to prevent damage or a fire hazard. Unlike an auto-reset limit, the manual reset design requires a technician to press the reset button after diagnosing the fault, making it a critical last-line safety device. If your furnace is locking out on limit or the button won't hold, this exact-fit replacement restores safe operation.
The OEM 10123533 is calibrated to the exact trip temperature and mounting footprint specified for your furnace. A generic limit with the wrong set-point can trip prematurely or, worse, fail to trip when it should — a genuine safety concern. For a life-safety component, OEM is strongly recommended.
Moderate (2/5). Shut off power and gas, remove the burner/blower access panel, note the wire terminal positions, unscrew the old switch, mount the new one in the same location, reconnect the leads, and press reset. Basic hand tools required; 20–30 minutes. If the new switch trips again, diagnose the underlying airflow or rollout cause before repeated resets.
Always disconnect power and gas before servicing safety controls.