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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM overheat safety control for the GKS90704CXAF gas furnace. This high-limit / rollout switch opens the ignition circuit if it senses excessive temperature — from a blocked flue, flame rollout, or restricted airflow — shutting the furnace down to prevent heat-exchanger damage or fire. Its manual reset design requires a technician to inspect and physically reset the switch, ensuring the underlying fault is addressed before the furnace restarts.
Limit switches are set to trip at a specific temperature threshold matched to the furnace's design. The OEM 10123533 carries the exact factory trip rating for the GKS90704CXAF. A generic switch with the wrong rating may trip early (nuisance shutdowns) or fail to protect the equipment. For a life-safety component, always install the correct OEM part.
Easy (2/5). Disconnect power and gas, unplug the two wire leads, remove the mounting screws, and install the replacement in the same orientation. After a manual-reset trip, always diagnose the root cause (blocked flue, dirty filter, cracked heat exchanger) before resetting.
Fits Goodman GKS90704CXAF furnaces. Confirm your model number before ordering.