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The Goodman 10123534 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for the Goodman GCV90704CXBB gas furnace. This normally-closed switch opens and cuts power to the gas valve when the heat exchanger or plenum exceeds its rated temperature — protecting against overheating from restricted airflow, a failed blower, or a dirty filter. Because it is a manual-reset design, it must be physically reset after a trip, which flags the homeowner or technician that an overheat condition occurred and needs investigation.
This factory Goodman switch is calibrated to the exact trip and reset temperature specified for the GCV90704CXBB, ensuring the furnace shuts down at the correct threshold. Generic limit switches may carry a different set point, which can cause nuisance trips or, worse, fail to protect the heat exchanger. Safety controls are one part we always recommend buying OEM.
Easy (2 of 5). Shut off power and gas, remove the two mounting screws, transfer the wire connectors to the new switch, and remount. Verify orientation matches the original.
Backed by our fit guarantee for the GCV90704CXBB. Contact info@nationalhvacparts.com with questions.