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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM safety control engineered for the AMVC80905CXAA two-stage variable-speed gas furnace. This temperature-activated switch monitors heat exchanger and blower compartment temperatures, cutting power to the gas valve if an over-temperature or rollout condition is detected — protecting your equipment and home from unsafe operation.
Unlike universal aftermarket switches that require guessing the correct trip temperature, this genuine Goodman part arrives pre-calibrated to the exact factory specification for your model. That means reliable trip points, correct mounting geometry, and no nuisance lockouts — critical for a safety device where an incorrect rating can be dangerous.
Easy (1/5). Two mounting screws and a pair of quick-connect spade terminals. Always disconnect power at the breaker before servicing. If you are unsure why the original switch failed, have a licensed HVAC technician diagnose the underlying cause before replacement.