Wacker Neuson
Auto Start Control Circuit Fault
Generator fails to start automatically on utility failure but starts manually
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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
Incorrect controller mode setting, Faulty remote start wiring between ATS and generator, Failed auto-start relay, Utility sensing misconfiguration
How to Fix / Troubleshooting
Safety first: Simulate utility failure only under controlled conditions and with proper supervision.
- Check controller mode: Ensure the Wacker Neuson controller is set to AUTO, not MANUAL or OFF.
- Verify ATS signal: Confirm that the ATS closes the remote start contacts when utility fails. Test continuity at the generator terminals.
- Inspect wiring: Trace remote start wires from ATS to controller. Repair any breaks or loose connections.
- Controller inputs: Check that the controller input assigned to remote start is configured correctly in the settings.
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Repair Difficulty
Medium
3/5
Required Part
Remote Start Control Harness
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