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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM thermal safety control engineered for the AMVC81005CXCA two-stage variable-speed furnace and compatible Goodman/Amana models. Identified by its light-blue housing, this normally-closed limit switch opens the control circuit when it senses excessive temperature, shutting down the burners to prevent heat-exchanger and cabinet overheating. A failed auxiliary limit is a common cause of no-heat lockouts and short cycling.
The OEM 0130F00038 is factory-calibrated to the exact trip and reset temperatures Goodman specifies for this heat exchanger, guaranteeing correct safety response and preserving your equipment warranty. A universal limit may bolt in, but off-spec trip points can cause nuisance lockouts or fail to protect the exchanger. For a safety-critical control, we recommend the genuine OEM part.
Easy (2/5). A basic repair for a technician or confident DIYer: cut power at the disconnect, remove the two mounting screws, transfer the spade connectors, and reinstall. Typically 15–20 minutes. Always disconnect power before servicing and verify airflow if the switch has been tripping repeatedly.