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The Goodman 10123517 is a genuine OEM manual reset high-limit safety switch engineered for the ACVC950915DXAA gas furnace and other compatible Goodman and Amana models. This switch is a critical safety control that monitors heat-exchanger and plenum temperatures and trips the burner circuit if the furnace overheats, protecting the equipment and your home from dangerous high-temperature conditions. Unlike auto-reset limits, the manual reset design requires the homeowner or technician to press the reset button after a fault clears, ensuring the underlying cause is investigated.
This is a genuine OEM Goodman part built to factory trip-temperature and electrical specifications, guaranteeing correct calibration and a precise mechanical fit. Generic limit switches may carry a different trip point or mounting footprint, risking nuisance trips or improper protection. For a safety-critical control like a high-limit switch, OEM is strongly recommended.
Moderate — typically two mounting screws and two spade terminals. Always shut off power and gas at the furnace before servicing. If the switch has tripped repeatedly, have a licensed HVAC technician diagnose the root cause (restricted airflow, dirty filter, or failed blower) before relying on the replacement.