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The Goodman 10123529 is a genuine OEM manual reset high-limit switch engineered for the Goodman/Amana ADSH800603AXAC gas furnace and compatible models. This safety control monitors heat-exchanger and plenum temperatures, opening the burner circuit if the furnace overheats due to restricted airflow, a failed blower, or a blocked filter. Unlike auto-reset limits, the manual reset design requires a technician to physically press the reset button after a trip — a deliberate safety feature that flags a fault needing inspection.
The genuine OEM 10123529 is calibrated to the exact trip temperature specified by Goodman for this furnace, ensuring proper safety operation and warranty compliance. Generic universal limits may trip early or late, causing nuisance shutdowns or unsafe operation. For a life-safety control, OEM is strongly recommended.
Easy (1 of 3). A two-wire swap secured by mounting screws — 10–15 minutes with the power off. Always cut power at the disconnect before servicing. If the switch trips repeatedly, diagnose the underlying airflow or ignition fault before returning the furnace to service.