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The Goodman 10123533 is a genuine OEM manual reset limit switch engineered for the WGFM195070S3BAC gas furnace and compatible Goodman/Amana models. This high-limit safety control protects your furnace from dangerous overheating by cutting power to the burners when the plenum temperature exceeds its trip point. Because it is a manual reset device, it will not automatically re-close after a fault — a technician must physically press the reset button, ensuring an overheat event is investigated rather than silently repeated.
The genuine OEM 10123533 is calibrated to the exact trip temperature specified for your furnace's heat exchanger. Universal aftermarket limit switches often carry a different set point, which can cause nuisance trips or, worse, fail to protect the unit. For a safety-critical control we strongly recommend the OEM part.
Easy (2/5). A two-wire replacement that mounts with existing screws. Always shut off power and gas at the furnace before servicing. If the switch has tripped, have the root cause (restricted airflow, dirty filter, blower fault) diagnosed by a qualified HVAC technician.