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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch — identified by its light blue cap — for the AMVC80603BXBC gas furnace. This secondary thermal safety control supplements the primary limit, opening the burner circuit if it senses excessive temperature at its mounting location (such as the burner box or blower compartment). It guards against overheating conditions the primary limit may not catch, protecting the heat exchanger and cabinet.
The color-coded cap denotes a specific trip temperature — installing the wrong rating causes nuisance no-heat trips or removes protection. OEM guarantees the correct set point for this position in the furnace. Always match the factory part.
Easy to Moderate — mounting screws and spade terminals; disconnect power first and confirm the light-blue temperature rating matches the original before installing.