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The Goodman 10123529 is a genuine OEM manual-reset high-limit switch for the AMVC80604BXBD furnace and compatible Goodman/Amana models. This is a critical safety control: it monitors temperature at the heat exchanger and opens the circuit to shut down the burner if the furnace overheats — for example from a blocked filter, failed blower, or restricted airflow. Unlike an auto-reset limit, the manual-reset design requires a person to press the reset button, ensuring an overheat event is investigated rather than silently cycled.
The OEM 10123529 is calibrated to the exact trip temperature specified for this furnace and matches the factory mounting and terminal layout. A generic switch with the wrong trip point can nuisance-trip or, worse, fail to protect the equipment. For a safety device, only the correct OEM rating is acceptable.
Easy to Moderate. Disconnect power, unplug the two spade terminals, and swap the switch on its mounting screws. If the limit keeps tripping after replacement, do not bypass it — diagnose the airflow or blower fault behind it, ideally with a licensed HVAC technician.