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The Goodman 10123532 Manual Reset Limit Switch is a genuine OEM safety control engineered for the WGGE4348A070MAB gas furnace and compatible Goodman and Amana models. This high-limit switch monitors heat-exchanger temperature and opens the gas/ignition circuit if the furnace overheats, protecting your equipment and home from a runaway heat condition. Because it is a manual reset device, it stays open after a fault until an operator physically presses the reset button — a deliberate design that forces a service check before the unit can fire again.
OEM vs. Generic: Our genuine Goodman 10123532 is calibrated to the exact trip temperature specified for your furnace. Generic aftermarket limits often carry an approximate rating that can cause nuisance lockouts or, worse, trip late. For a life-safety component we strongly recommend the OEM part.
Install difficulty: Easy (1/5). Two spade terminals and two mounting screws. Always shut off electrical power and gas at the furnace before servicing. If your limit switch has tripped, diagnose the underlying cause — a dirty filter, blocked vent, or failing blower — before resetting, or the new switch will trip again. When in doubt, consult a licensed HVAC technician.