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The Goodman 10123533 is a genuine OEM manual-reset high-limit switch for the AMH950704CXAC gas furnace. This safety control opens the ignition circuit if it senses abnormally high temperature — protecting the heat exchanger and cabinet from overheating caused by restricted airflow, a failed blower, or flame rollout. Unlike auto-reset limits, the manual-reset design requires a deliberate button press to restore operation, prompting a technician to find and correct the underlying fault before the furnace runs again.
The OEM 10123533 is calibrated to the exact trip temperature and mounting footprint specified for this furnace, so it protects at the right threshold without nuisance trips. Generic limit switches may use a different set point or terminal orientation, risking either false lockouts or inadequate protection. For a safety-critical control, genuine OEM is strongly recommended.
Moderate (2 of 5). Involves disconnecting furnace power, removing two spade wire connectors, unscrewing the switch, and mounting the replacement in the same orientation. Best performed by an HVAC technician since it is a safety device — about 20–30 minutes.