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The Goodman 10123535 Manual Reset Limit Switch (Red) is a genuine OEM high-temperature safety control for GKS90453BXAE gas furnaces. The red button identifies its specific trip-temperature rating, so it is important to match this exact part rather than a similar-looking limit of a different color/set point. This normally closed switch interrupts the control circuit during an over-temperature or flame-rollout event and stays latched until manually reset, forcing the root cause to be corrected before the furnace can fire again.
The genuine Goodman OEM limit carries the precise trip temperature encoded by its red button rating. Substituting a generic limit — or even the wrong-colored OEM limit — can defeat heat-exchanger protection or cause repeated nuisance trips. For this safety control, match the exact part number and color.
Easy — Disconnect power, transfer the two wire terminals, and mount the new switch in the original position and orientation. Important: if the old switch had tripped, find and fix the overheat source (restricted airflow, blower failure, or heat-exchanger issue) before restoring service.
Exact-fit guaranteed with fast shipping. Order the Goodman 10123535 today to keep your GKS90453BXAE furnace protected.