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The Goodman 10123534 is a genuine OEM manual reset limit switch (rollout / high-limit safety) engineered as an exact-fit replacement for the AMEC961005CNAC gas furnace and other compatible Amana and Goodman models. This safety control opens the gas valve circuit when it senses abnormal flame rollout or overheating, shutting the furnace down to protect the heat exchanger and your home. Because it is a manual reset device, it must be physically reset with the push button after the underlying fault is corrected — an intentional design that flags conditions requiring inspection.
The genuine OEM 10123534 is calibrated to the exact trip temperature and terminal configuration specified for your furnace, ensuring reliable safety shutdown and code-compliant operation. Generic aftermarket switches may vary in trip point or terminal spacing, risking nuisance trips or improper protection. For a safety component, we recommend the OEM part.
Easy–Moderate. A basic swap for a competent DIYer with the furnace powered off and gas shut down: disconnect the two spade terminals, remove the mounting screws, and reinstall the new switch. Because this is a gas-safety part, have a licensed HVAC technician confirm the failure cause if the switch keeps tripping.