Perkins
Auto Start / Remote Start Circuit Fault
Automatic start function does not work, generator only starts in manual mode
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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
No start signal from ATS, Broken remote start wiring, Incorrect controller mode setting, Faulty remote start relay
How to Fix / Troubleshooting
Safety: Be aware that restoring auto start can cause unexpected engine cranking. Warn personnel before testing.
- Controller mode: Ensure the Perkins generator controller is set to AUTO mode, not MANUAL or OFF.
- Check ATS signal: Verify that the ATS sends a start signal (dry contact or voltage) when mains fails. Use a meter at the generator remote start terminals.
- Inspect wiring: Trace the remote start circuit from ATS to controller. Repair any breaks or loose connections.
- Relay test: If a start relay is used, test its coil and contacts. Replace if it does not operate when the start signal is present.
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Repair Difficulty
Medium
3/5
Required Part
Remote Start Relay
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