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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM rollout safety control designed for the ACVC81005CXBD gas furnace and compatible Goodman/Amana models. This switch interrupts the gas valve and ignition circuit if flame rollout or excessive heat-exchanger temperature is detected, protecting your furnace and home from unsafe operation. As a manual-reset device, it requires a deliberate button press to restore operation — a clear signal that an underlying condition (blocked flue, cracked heat exchanger, or restricted airflow) should be investigated.
The genuine Goodman OEM switch is calibrated to the exact factory trip temperature for your furnace, guaranteeing correct safety response. Generic equivalents may carry similar ratings at a lower cost but can vary in trip accuracy and mounting fit. For a safety-critical control, we recommend OEM.
Easy (1/5) — Two-wire spade connection and a single-screw mount. Always shut off power and gas before servicing. If the switch trips repeatedly after replacement, diagnose the root cause before continued operation.