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The Goodman 0130F00036 Limit Switch (pink color-coded body) is the genuine OEM high-temperature safety limit for the ACES800804BXAA gas furnace. Mounted on the heat exchanger or burner enclosure, it monitors air temperature and opens the circuit to shut off the gas valve if the furnace overheats — protecting the heat exchanger and your home. The pink color code identifies its specific factory trip-temperature setpoint, so matching the OEM part is critical.
OEM vs. Generic: Limit switches are calibrated to a precise temperature; the pink code is not interchangeable with blue, orange, or other colors. The OEM 0130F00036 guarantees the correct trip point and the exact bracket footprint. Generic substitutes with the wrong setpoint can cause premature shutdowns or, worse, fail to protect the heat exchanger.
Install Difficulty: Easy (1/5). Remove two screws, transfer the two wire leads, and mount the replacement. About 10–15 minutes. Cut power before servicing.