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The Goodman 10123533 is a manual reset high-limit / rollout safety switch engineered for the GME951005DXAA modulating gas furnace and other compatible Goodman and Amana models. This normally-closed thermal switch opens the control circuit when it senses an over-temperature or flame-rollout condition, shutting down the burners to protect the heat exchanger and prevent unsafe operation. Because it is a manual reset device, it will not automatically re-close, forcing a service inspection before the furnace can run again — an important safety feature required on modern high-efficiency furnaces.
Genuine OEM 10123533 guarantees the exact trip temperature, mounting footprint, and terminal orientation your furnace's safety circuit was designed around — the safest choice for a UL-listed appliance. A quality generic equivalent can offer savings when specs match, but on a safety-critical limit switch we recommend OEM to preserve certified trip points.
Easy (1/5). A basic repair: shut off power and gas, disconnect the two spade terminals, remove the mounting screws, and swap in the new switch. Typically a 10–15 minute job. Because this is a safety component, have a qualified HVAC technician confirm the underlying cause of any trip before returning the unit to service.