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The Goodman 10123533 is a genuine OEM manual reset limit switch engineered for the GKS90703BXAE gas furnace and compatible Goodman/Amana 90-series models. This high-limit safety control monitors heat exchanger and burner-area temperatures, opening the circuit to shut down the furnace if a dangerous over-temperature or flame rollout condition occurs. Once tripped, it requires a manual push-button reset, giving the homeowner or technician a clear signal that an underlying airflow or combustion fault needs attention.
The genuine Goodman OEM switch is factory-calibrated to the furnace's exact trip temperature and mounting geometry, ensuring reliable nuisance-free operation and preserving your equipment warranty. Aftermarket generics may use looser tolerances or slightly different trip points that can cause premature shutdowns. For a safety-critical control, OEM is strongly recommended.
Easy (2/5). A basic swap for a comfortable DIYer: disconnect power, remove two mounting screws and the wire leads, and install the replacement. If the switch keeps tripping after replacement, have a technician diagnose the airflow or combustion cause.
Always disconnect power before servicing your furnace.