Generator shuts down; controller displays E06 Overspeed.

Safety first: Do not attempt to restart repeatedly after an overspeed event. Overspeed can cause severe mechanical damage.

• Check speed sensor: Locate the magnetic pickup or speed sensor near the flywheel or ring gear. Inspect for loose mounting, damaged cable, or metal debris on the sensor tip. Clean and reseat it; replace if damaged.
• Inspect fuel actuator/governor: On electronic governor systems, verify the fuel actuator linkage moves freely and is not binding. Lubricate linkages lightly if recommended by the engine manufacturer.
• Review controller settings: In the Aksa controller configuration (service level), verify rated speed (e.g., 1500 or 1800 rpm) and overspeed threshold are correctly set. Only qualified personnel should change these parameters.
• Check for load changes: Confirm that no sudden load rejection or grid disturbance caused a transient overspeed. If overspeed occurs with no load, suspect governor or actuator faults.
• Professional inspection: If overspeed recurs, have a technician verify mechanical governor operation and perform a full speed calibration.