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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM safety component engineered for the Amana/Goodman AMVC80805CNCA 80% two-stage variable-speed furnace and compatible models. This high-limit switch monitors heat-exchanger and burner-box temperatures and interrupts the gas valve if an overheat or flame-rollout condition occurs, protecting your furnace and home from unsafe operation.
Unlike auto-reset limits, this manual-reset switch requires a physical button press to restore operation after a trip — a deliberate design that forces a technician to diagnose the root cause (blocked flue, restricted airflow, or failed inducer) before the furnace can fire again.
The OEM 10123529 is factory-calibrated to the exact trip temperature specified for your furnace, ensuring correct safety response and preserving your equipment warranty. Generic universal limits may have different trip points or terminal spacing, risking nuisance trips or delayed shutoff. For a safety-critical control, we recommend the OEM part.
Easy (1/5). Shut off power and gas, disconnect the two spade wires, remove the mounting screws, install the new switch in the same orientation, and reconnect. Typically a 10–15 minute repair. If the switch trips again after replacement, stop and diagnose the underlying overheat condition.