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The genuine OEM Goodman 10123529 Manual Reset Rollout Limit Switch is a critical flame-rollout safety component for the Goodman VMS80805CNAA gas furnace and compatible 80% AFUE models. It monitors for abnormal heat conditions caused by a blocked flue or restricted combustion airflow and shuts down the burner to prevent an unsafe firing condition. Because it is a manual reset device, it must be reset by hand after a trip — a deliberate design that flags the underlying fault for a technician to inspect.
The OEM 10123529 is calibrated to Goodman's exact trip temperature and mounting footprint, ensuring correct safety response and a bolt-in fit. A generic equivalent may cost less but can vary in trip point and bracket geometry, which is why we recommend OEM for a safety-rated part.
Easy (2/5). Two mounting screws and two spade connectors. Always shut off power and gas before servicing. If the switch has tripped, have a technician diagnose the root cause before resetting.