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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM temperature-safety control for the Amana/Goodman AMVC81005CNCA gas furnace. This auxiliary limit protects a secondary zone of the furnace—such as the blower compartment or a mispositioned duct area—by opening the control circuit if temperatures rise beyond the rated setpoint. The color-coded (light blue) body identifies its specific trip rating, so matching the exact part is essential for correct protection.
The light-blue color denotes a factory-calibrated trip temperature. Installing a generic switch or the wrong color rating can cause nuisance lockouts or leave the furnace unprotected. This OEM part guarantees the correct setpoint and terminal layout for a plug-and-play fit.
Easy — Disconnect two wires, remove one or two mounting screws, and install the replacement in the same orientation. Power and gas off before servicing. Most repairs take under 20 minutes; consult a licensed technician if you're unsure of the fault.