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The 10123529 manual reset limit switch is a genuine OEM safety control for the Goodman/Amana AMVC80604BXBA gas furnace. This normally-closed thermal switch opens the ignition/gas circuit if it senses an overheat or flame-rollout condition, shutting the furnace down until the fault is corrected and the button is manually pressed to reset. It is a critical safety device — a tripped or failed switch prevents unsafe operation.
The OEM switch is calibrated to the exact trip temperature Goodman engineered for this heat exchanger and comes with the correct terminal spacing and mounting. Generic switches with the wrong trip point can nuisance-trip or, worse, fail to trip on a real overheat. For a life-safety control, always use the OEM-spec part.
Easy (1/5). Two mounting screws and two spade connectors. Power and gas off, note wire positions, and never bypass a repeatedly tripping switch — investigate the root overheat cause first.