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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM safety control for the Amana/Goodman AMVC80604BXBB gas furnace. This high-limit/rollout switch trips and cuts power to the gas valve if it senses excessive temperature or flame rollout, protecting the heat exchanger and your home. Because it is a manual reset type, a tripped switch will not auto-recover — it must be reset by hand after the fault is corrected, giving you a clear signal that something needs attention.
The OEM Goodman switch is calibrated to the exact trip temperature specified for this furnace. Generic equivalents may differ in trip point or terminal orientation, which can cause nuisance trips or delayed shutoff. For a safety device, OEM calibration matters — we recommend OEM here.
Easy (1/5). Power down the furnace, unplug the two spade terminals, remove the mounting screws, and install the replacement. A 10-minute job. If the new switch trips again, do not bypass it — diagnose the underlying overheat or venting problem first.