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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM safety control engineered specifically for the AMVC81005CXBB variable-speed gas furnace. This light-blue color-coded limit protects the heat exchanger and blower compartment by opening the control circuit when air temperature exceeds its factory-calibrated trip point, then automatically resetting once conditions return to normal. It is the exact part your furnace shipped with — no cross-referencing or guesswork required.
Our genuine OEM switch is calibrated to the precise trip temperature your furnace was engineered for, ensuring correct safety response and preserving your warranty. Generic universal limits often carry different trip points that can cause nuisance lockouts or, worse, fail to open when they should. For a safety-critical component, OEM is the right choice.
Easy (1/5) — Typically a two-wire, single-fastener replacement. Cut power at the breaker, disconnect the leads, swap the switch, and reconnect. Most homeowners finish in under 15 minutes with a nut driver, but always confirm your model number before installing.