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Restore your furnace's built-in safety system with the genuine OEM Goodman 10123538 Manual Reset Limit Switch, engineered as a direct-fit replacement for the VMSS960803BNAA gas furnace. This manual reset high-limit switch monitors heat-exchanger and plenum temperatures and interrupts the ignition/gas circuit if the furnace overheats — a critical protection against restricted airflow, a dirty filter, or a failed blower. Because it is a manual reset design, it will not auto-cycle after a fault, prompting the homeowner or technician to diagnose the root cause before the furnace runs again.
This is a genuine Goodman OEM component, calibrated to the exact trip temperature the furnace's control board expects. Generic switches often ship with an approximate cutout rating that can cause nuisance lockouts or, worse, allow the furnace to run past safe limits. For a safety-critical part, OEM is the recommended choice.
Easy (1 of 3). A two-wire, plug-on replacement secured by one or two screws. Always shut off power and gas at the furnace before servicing. If you are unsure why the original tripped, have a licensed HVAC technician inspect airflow and the blower before reset.