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The Goodman 10123533 is a genuine OEM manual-reset high-limit switch for the AMVC950905CXAA variable-capacity gas furnace and compatible Goodman/Amana models. This safety control opens the circuit when it senses excessive temperature — typically from a blocked flue, failed blower, or restricted airflow — shutting the furnace down to prevent overheating and heat-exchanger damage. Because it is a manual-reset device, it must be physically reset after a trip, alerting the homeowner or technician that a fault occurred.
The OEM 10123533 is calibrated to the exact trip temperature Goodman engineered for this furnace, so it protects the heat exchanger without nuisance trips. Generic limit switches with approximate set points can either trip too early (frequent lockouts) or too late (unsafe). For a safety component, always use the genuine OEM part.
Requires basic electrical work (20–30 minutes). Shut off power and gas, remove the burner-compartment panel, disconnect the two wire leads, unbolt the old switch, mount the new 10123533 in the same orientation, and reconnect. If the switch keeps tripping after replacement, diagnose the underlying airflow or venting fault before returning to service.
Compatibility note: Verify your furnace model before ordering. Contact info@nationalhvacparts.com for fit confirmation.