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The 0130F00038 is a genuine OEM auxiliary limit switch — identified by its light blue cap — for the Goodman WFD195045S3BAA gas furnace. This thermally-activated safety switch monitors temperature at a secondary location in the furnace cabinet and opens the control circuit if it senses excess heat, protecting the heat exchanger and blower assembly from overheating. The color-coded cap denotes a specific trip temperature, so matching the exact OEM part is essential for correct, safe operation.
Because the trip temperature is calibrated and color-coded, we strongly recommend the OEM 0130F00038. A generic switch with the wrong setpoint can nuisance-trip in normal operation or, worse, fail to protect the furnace. The OEM part guarantees the exact temperature rating, terminal style, and bracket fit. For a safety component, OEM is the responsible choice.
Easy (1 of 5). Disconnect power, note the wire positions, remove the two mounting screws, transfer the spade connectors, and reinstall. About 10 minutes. Never bypass or jumper a limit switch — it is a required safety device.