OVER FREQUENCY
Centurion High Engine Speed / Overfrequency

Control panel shows OVER FREQUENCY; generator may sound like it is running too fast.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Governor spring misadjusted or broken, Sticking throttle plate, Faulty engine speed sensor feedback, Control board governor driver fault

How to Fix / Troubleshooting

Safety first: Turn the generator OFF and open the main breaker. Do not operate with overfrequency as it can damage connected equipment.

  • Visual inspection: Inspect the governor linkage and springs on the Centurion engine. Look for broken or disconnected springs.
  • Check throttle return: Ensure the throttle returns to idle position when moved by hand. Clean and lightly lubricate if sticking.
  • Inspect speed sensor wiring: Verify the engine speed sensor connector is fully seated and free of corrosion.
  • Do not adjust blindly: Avoid random governor adjustments without proper tools; incorrect settings can worsen the problem.

When to call a technician: A technician should verify RPM with a tachometer, replace damaged governor components, and recalibrate the control board if necessary.

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Repair Difficulty

Professional Required 5/5

Required Part

Governor Spring Kit
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