Aksa
No Output – Loss of Excitation
Generator runs but produces no voltage at the output terminals.
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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
Failed AVR, Open field winding, Blown excitation fuse, Loose alternator terminal connections
How to Fix / Troubleshooting
Safety first: Confirm the generator breaker is open and the unit is isolated. High voltage may appear suddenly during testing.
- Check output breaker: Ensure the generator main breaker is closed when testing voltage.
- Inspect AVR and fuses: In the alternator terminal box, check excitation fuses and replace if blown. Inspect the AVR for burn marks.
- Measure field resistance: With power off, measure resistance of the field winding at the AVR terminals. An open circuit indicates rotor failure.
- Re‑flash (qualified only): Some alternators may require field flashing if residual magnetism is lost. Follow Aksa/alternator manufacturer procedure.
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Repair Difficulty
Professional Required
5/5
Required Part
Alternator Rotor / AVR
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