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The genuine OEM Goodman 10123533 Manual Reset Limit Switch is an exact-fit safety control for the Amana/Goodman AMV91155DXAB gas furnace and compatible 90%+ variable-speed models. This rollout/high-limit switch monitors flame containment and shuts the furnace down if flame rollout or excessive heat is detected, protecting your heat exchanger and household. Because it is a manual reset device, a tripped switch requires a physical reset — an intentional design that alerts you to an underlying issue rather than silently re-energizing.
Generic aftermarket limit switches may vary in trip temperature and mounting geometry, risking nuisance trips or improper protection. This genuine OEM 10123533 is calibrated to Goodman's exact trip spec and drops into the factory bracket with no modification — the safest choice for a life-safety component.
Easy (1/5) — Two screws and two spade connectors. Always disconnect power at the breaker before servicing. If the switch has tripped, diagnose and correct the root cause (blocked flue, cracked heat exchanger, or airflow restriction) before returning the unit to service.