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The genuine Goodman 10123537 is the gray-bodied manual reset limit switch used in the AMV90704CXBB high-efficiency furnace. This thermal safety control opens the burner circuit on an over-temperature or flame-rollout event and holds the furnace off until it is manually reset. The gray housing denotes its specific factory trip-point calibration — always match the color/part number to the position specified for your furnace so the correct temperature protection is maintained.
Furnaces often use multiple limit switches with different trip temperatures, identified by body color and part number. Installing a substitute with the wrong rating can cause nuisance lockouts or bypass critical protection. The OEM 10123537 guarantees the exact factory-specified cut-out temperature for its location in the AMV9.
Moderate (2/5) — Cut power to the furnace, remove the mounting screws, and transfer the spade connectors to the new switch. Confirm you are matching part number and color to the original location. Diagnose the underlying overheat cause before returning the unit to service; call a licensed technician if in doubt.
Compatible with Goodman and Amana AMV90704CXBB furnaces. Need help matching the switch? Contact info@nationalhvacparts.com.