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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for Goodman ADVC80805CNBA gas furnaces. This normally-closed switch opens the gas/ignition circuit if it senses an over-temperature or flame-rollout condition, shutting the furnace down to prevent damage. Because it is a manual reset device, it must be physically reset after tripping — a deliberate safety design that flags an underlying airflow or combustion problem.
This OEM Goodman switch is calibrated to the exact trip temperature specified for your furnace. Generic switches with the wrong set point can trip prematurely (nuisance shutdowns) or, worse, fail to trip when needed. For a safety device, OEM calibration is not optional.
Replacement is straightforward: disconnect power, unplug the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. Under 15 minutes with a nut driver. Important: if the switch keeps tripping, diagnose the root cause (blocked flue, failed inducer, dirty filter) rather than repeatedly resetting.
Protect your ADVC80805CNBA furnace with the genuine OEM Goodman 10123529 manual reset limit switch.