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The Goodman 0130F00038 Auxiliary Limit Switch (identified by its light blue body) is a genuine OEM thermal safety control for the Goodman/Amana ACVC951155DXAA gas furnace. This normally-closed switch monitors temperature in the blower or burner compartment and opens the circuit to shut off the burners if the furnace overheats — protecting the heat exchanger and surrounding components from heat damage.
A tripped or failed auxiliary limit switch can cause no-heat conditions or repeated safety lockouts. Color and trip-point coding matter on Goodman furnaces, so matching the light-blue 0130F00038 ensures the correct temperature rating for this application.
Limit switches are calibrated to a precise open/close temperature; an incorrect generic switch can nuisance-trip or, worse, fail to protect the furnace. The OEM 0130F00038 guarantees the factory-specified trip point and the correct light-blue color code for the ACVC951155DXAA.
Easy to Moderate. Power down the furnace, remove the two mounting screws, transfer the wire leads to the new switch, and remount. About 15–20 minutes with basic tools. Confirm the leads are fully seated and test a full heating cycle for safe operation.