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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM safety control engineered for Amana/Goodman AMEC801005CXAA gas furnaces. This normally-closed thermal switch monitors heat-exchanger and plenum temperatures, opening the ignition circuit to shut the furnace down if it overheats — protecting the equipment and your home from unsafe conditions.
Our OEM option is the exact factory-spec switch with the correct trip temperature and color code for reliable fit and safety compliance. A Generic equivalent offers a budget-friendly alternative with a comparable temperature rating, but always verify the trip point matches your original before installing a safety control.
Easy (2/5). A two-wire swap that takes most homeowners 10–15 minutes with basic hand tools. Always shut off power and gas at the furnace before servicing. If unsure why the original tripped, have an HVAC technician diagnose the root cause — a limit switch is a safety device, not a nuisance part.