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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for GKS90453BXAE gas furnaces. This normally closed switch opens the control circuit and shuts down the furnace if it detects an over-temperature or flame-rollout condition, protecting the heat exchanger and surrounding cabinet. Because it is a manual reset design, it stays tripped until a technician presses the button — a deliberate safeguard that forces the underlying cause (blocked airflow, cracked heat exchanger, or venting fault) to be investigated before the furnace runs again.
This genuine Goodman OEM limit is calibrated to the exact trip temperature specified for your furnace. Generic limits with different set points can nuisance-trip or, worse, fail to protect the heat exchanger. For a safety control, always match the OEM specification.
Easy — Cut power, note the two wire terminals, and swap the switch into the same mounting location and orientation. Important: if this limit had tripped, diagnose and correct the overheat cause (dirty filter, closed vents, blower fault) before returning the furnace to service.
Exact-fit guaranteed with fast shipping. Order the Goodman 10123533 today to restore safe operation on your GKS90453BXAE furnace.