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The Goodman 10123537 Manual Reset Limit Switch (Gray) is a genuine OEM overheat safety control for AMVC950704CXAC variable-speed modulating gas furnaces and related Goodman/Amana models. The gray body denotes a specific factory trip-temperature calibration — always match the color and part number stamped on your original switch, as these furnaces may use more than one limit rating at different locations. When cabinet or heat-exchanger temperature exceeds the safe threshold, the switch opens and interrupts the heating circuit until it is manually reset.
Genuine Goodman calibration guarantees the switch trips at the precise temperature your heat exchanger is designed for. Generic or mismatched-color substitutes risk nuisance shutdowns or inadequate overheat protection. For a safety cutout, exact OEM matching is essential — do not substitute by appearance alone.
Moderate (2/5). Involves disconnecting two leads and unfastening the mounting screws, then seating the replacement in the identical factory position. Shut off power and gas first, and correct the root cause of any overheat trip (clogged filter, closed registers, failing blower) before restoring operation.
Confirm the 10123537 part number and gray rating against your existing switch before ordering. Questions? Reach us at info@nationalhvacparts.com.