Volvo Penta
Auto-Start Control Failure
Generator fails to start automatically on mains failure but can be started 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
Faulty AMF/ATS control signal, Incorrect controller configuration, Open remote start wiring, Failed digital input on controller
How to Fix / Troubleshooting
Safety: Coordinate with facility personnel before simulating mains failure.
- Check controller mode: Ensure the generator controller is set to AUTO and not MANUAL or OFF.
- Test remote start input: Use the controller's I/O diagnostics to verify that the remote start input changes state when the ATS or AMF panel calls for start.
- Inspect wiring: Trace the remote start wires from the ATS to the generator controller. Repair any breaks or loose terminals.
- Verify ATS operation: Simulate mains failure and confirm that the ATS sends the correct start signal. Repair or replace faulty ATS components.
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Repair Difficulty
Medium
3/5
Required Part
Automatic Transfer Switch (ATS) Control Circuit
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