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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM safety control designed for the AMEH800603BNAA furnace and other compatible Goodman and Amana gas furnace platforms. This light-blue temperature limit switch monitors heat exchanger and blower compartment temperatures, opening the circuit to shut down the burners if the unit overheats — protecting the furnace and your home from unsafe operating conditions.
Our OEM 0130F00038 is calibrated to the exact factory trip temperature, guaranteeing correct safety cutout behavior. Generic aftermarket limit switches may carry a similar color code but can vary in trip point and mounting geometry, risking nuisance trips or unsafe delayed cutout. For a safety-critical control, matching the OEM calibration is strongly recommended.
Easy (2/5). Replacement is a straightforward swap using basic hand tools: disconnect power, unplug the wire leads, remove the mounting screws, and install the new switch in the same orientation. Always de-energize the furnace at the breaker before servicing and confirm the correct trip rating before returning the unit to service.