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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch (identified by its light-blue marking) for the VMS81005CXAA gas furnace and compatible Goodman/Amana models. This secondary thermal safety control backs up the primary limit, opening the control circuit if it senses excessive temperature in its monitored zone — protecting the blower compartment or burner area from overheating. The color coding denotes its specific trip temperature, so matching the exact part is essential.
This genuine OEM Goodman switch carries the factory-specified trip temperature indicated by its light-blue color code. Substituting a differently rated switch defeats the furnace's layered safety design. For any auxiliary safety limit, use the exact OEM color-matched part.
Easy — disconnect power, unplug the spade terminals, remove the mounting screws, and install the identical light-blue replacement in the same location and orientation. Verify normal furnace operation after installation.