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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM safety component engineered for the Goodman ADSH800603AXAA furnace and other compatible gas-fired heating units. This manual reset limit acts as a high-temperature cutoff, shutting down the burner circuit if the furnace overheats due to restricted airflow, a failed blower, or a blocked flue. Because it is a manual-reset design, it requires deliberate operator intervention after a trip — a built-in safeguard that flags underlying problems rather than silently cycling.
This is a factory-authentic Goodman part, calibrated to the exact trip temperature your furnace control board expects. Generic aftermarket limits may carry a different trip point or tolerance, risking nuisance trips or delayed shutoff. For a safety-critical switch, OEM is the recommended choice.
Moderate — Requires disconnecting power, removing the burner/blower access panel, and transferring the wiring leads. Basic hand tools and a multimeter for verification are recommended. If you are not comfortable working around gas heating components, consult a licensed HVAC technician.