E13
Hyundai Power
Over Voltage Protection
Generator shuts down and E13 is displayed during operation.
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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
Defective AVR causing high excitation, Incorrect AVR sensing wiring, Poor neutral connection, Controller configuration error
How to Fix / Troubleshooting
Safety first: Turn the generator OFF and disconnect it from the load. Overvoltage can damage connected equipment.
- Confirm overvoltage: With a multimeter, verify the actual output voltage when the generator is running. If it exceeds the rated value by more than 10%, do not connect loads.
- Inspect AVR sensing leads: Ensure that the AVR voltage sensing wires are correctly connected to the proper phases and neutral as per Hyundai Power wiring diagrams.
- Check neutral and ground: Loose or corroded neutral connections can cause voltage imbalance. Tighten all neutral and ground lugs in the generator terminal box.
- Replace AVR: If wiring is correct and overvoltage persists, replace the AVR with a genuine Hyundai Power part.
- Controller settings: Verify that the controller voltage setpoints match the generator rating. Incorrect settings can cause nuisance trips.
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Repair Difficulty
Hard
4/5
Required Part
Automatic Voltage Regulator (AVR)
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