GROUND FAULT
Centurion Detected Ground Fault on Output

Control panel shows GROUND FAULT; generator may shut down or refuse to transfer load.

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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

Short from phase conductor to equipment ground, Damaged cable insulation, Water intrusion in junction box, Faulty appliance connected to generator circuit

How to Fix / Troubleshooting

Safety first: Turn OFF generator and utility power. Do not reset ground fault repeatedly without finding the cause.

  • Inspect outdoor connections: Check all exterior junction boxes and conduits for water, corrosion, or damaged fittings.
  • Isolate circuits: Turn off branch breakers one by one and attempt to run the generator. If the fault clears when a specific breaker is off, the problem is on that circuit.
  • Check appliances: Unplug suspect appliances (well pumps, outdoor receptacles, etc.) on the affected circuit and retest.

When to call a technician: Persistent ground faults require insulation resistance testing and possibly cable replacement. A technician or electrician should perform these tests.

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Repair Difficulty

Hard 4/5

Required Part

Output Cable Harness
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