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The Goodman 10123517 Manual Reset Limit Switch is a genuine OEM overheat safety control for your Goodman GMV90703BXBA high-efficiency (90%+ AFUE) variable-speed furnace (70,000 BTU input). This normally-closed switch opens and shuts down the burners if it senses excessive temperature or flame rollout, then requires a manual reset — a deliberate design that flags a real problem rather than silently cycling. A tripped or failed switch will prevent the furnace from firing.
This is the factory OEM switch with the correct trip temperature and terminal layout for this furnace. Because this is a combustion-safety device, an incorrect trip point can either nuisance-trip or, worse, fail to protect. We strongly recommend the exact OEM part — never substitute a switch with a different temperature rating.
Easy (2 of 5). With gas and power off, disconnect the two spade terminals, unscrew the switch from its bracket, and mount the replacement. A 10–15 minute job. If the switch keeps tripping, diagnose the underlying overheat cause (airflow, heat exchanger, venting) before returning the unit to service.
Compatibility note: verify your model and serial tag before ordering. Contact info@nationalhvacparts.com with questions.