Ryobi
AUTO Start / Sensing Circuit Issue
Generator fails to start automatically during a utility outage, but starts manually from the control panel.
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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
AUTO mode not enabled on controller, Faulty utility voltage sensing at ATS, Open control wiring between ATS and generator, Misconfigured start delay settings
How to Fix / Troubleshooting
Safety first: Restore utility power before troubleshooting. Turn the generator OFF and disable AUTO while working on control circuits.
- Verify AUTO mode: Check the Ryobi controller to ensure it is set to AUTO and not OFF or MANUAL.
- Check start signal wiring: Inspect the low‑voltage control wires between the ATS and generator for continuity and secure connections.
- Confirm utility sensing: In the ATS (qualified persons only), verify that the utility sensing fuses or circuits are intact.
- Controller settings: Review and adjust start delay and sensing thresholds according to the Ryobi manual.
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Repair Difficulty
Hard
4/5
Required Part
ATS Control Wiring Harness
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