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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for the Amana/Goodman AMVM970603BNBA variable-speed gas furnace. This normally-closed switch opens the circuit and shuts the furnace down if it senses an over-temperature or flame-rollout condition — protecting the heat exchanger, wiring, and your home from unsafe heat. Because it is a manual-reset device, it will not restart on its own, which forces a technician to find and fix the root cause (blocked flue, cracked heat exchanger, dirty burners) before the furnace runs again.
Safety limits are not the place to gamble. Generic switches may have the wrong trip temperature or reset behavior, which can either nuisance-trip or, worse, fail to trip. This genuine OEM 10123529 is calibrated to Goodman's exact factory setpoint for reliable, code-compliant protection and preserves your equipment warranty.
Moderate (2/5) — Remove power and gas, unplug the two terminals, unscrew the switch from the burner box or heat-exchanger bracket, and reverse to install. A repeated trip means you have an underlying combustion or airflow problem — diagnose before returning to service.
Genuine OEM part, exact-fit guaranteed. Match number 10123529 to confirm compatibility.