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The Goodman 10123533 is a genuine OEM manual reset limit switch designed as an exact-fit replacement for the Goodman AKSS921155DXAA gas furnace and compatible models. This safety switch monitors furnace temperature and opens the circuit to stop the burners if an overheat or flame-rollout condition occurs. As a manual reset control, it requires pressing the reset button after a trip, ensuring the fault is inspected before the equipment resumes operation. It is frequently paired alongside the 10123519 as part of the furnace's layered safety system.
Genuine Goodman switches are factory-calibrated to the correct trip temperature with matching mount and terminal configuration. Generic replacements with mismatched trip points can cause nuisance shutdowns or, more dangerously, allow the furnace to overheat. Choosing OEM preserves the manufacturer's exact safety specification.
Easy to Moderate. Mounting uses screws and spade connectors, but frequent tripping signals an airflow restriction or heat-exchanger problem that should be diagnosed by a professional. Always shut off gas and electrical power before servicing.