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This genuine OEM Goodman 10123533 manual reset limit switch is a direct-fit safety control for the Goodman ACEC960803BNAA system. As a high-limit / rollout safety device, it interrupts the circuit when it senses excessive temperature — protecting the heat exchanger and surrounding components from overheating. Because it is a manual reset design, it must be pressed to reset after a trip, prompting the homeowner or technician to investigate the underlying cause.
This OEM switch is calibrated to the exact trip temperature specified by Goodman for your model. Substituting a generic limit switch with a different temperature rating or mounting style can cause nuisance trips or, worse, fail to protect the equipment. For safety-critical components like this, the genuine 10123533 is strongly recommended.
Moderate (3/5). Requires disconnecting power, removing the access panel, and transferring the wire leads to the new switch. Because this is a safety control, professional installation is recommended if you are unsure.
Always disconnect power before service and confirm the part number against your unit's parts diagram. Questions? Contact info@nationalhvacparts.com.