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The Goodman 10123529 is a genuine OEM manual reset limit switch engineered as a primary safety control for the ACVC80803BXCA 80% AFUE gas furnace and compatible Goodman/Amana models. When the furnace exceeds its safe operating temperature — typically from a blocked flue, dirty filter, or failed blower — this switch trips and shuts down the burner to prevent heat-exchanger damage. As a manual reset device, it stays open until you physically press the reset button, signaling a fault that needs attention.
The OEM Goodman switch guarantees the exact trip temperature and mounting fit specified for your furnace, protecting your warranty. Our generic equivalent meets the same temperature rating at a lower cost — ideal for out-of-warranty repairs where budget matters. Both deliver reliable overheat protection.
Easy (1/5). A two-wire swap with basic hand tools. Always disconnect power at the breaker before servicing. If the switch trips repeatedly after replacement, investigate airflow or venting — a tripping limit is a symptom, not the root cause.