Himoinsa
Automatic Mode / ATS Control Logic Issue
Generator will not start automatically after a mains failure, but starts normally 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
Controller not set to AUTO, ATS start signal not reaching controller, Inhibited auto start due to active alarm, Misconfigured auto start parameters
How to Fix / Troubleshooting
Safety: Ensure ATS and generator are safe to test. Inform site personnel before simulating mains failure.
- Check mode: Verify the Himoinsa controller is set to AUTO mode, not MANUAL or OFF.
- Active alarms: Clear any active alarms that may inhibit auto start.
- Test remote start input: Simulate the ATS start signal at the generator terminals and confirm the controller recognises it.
- ATS operation: Simulate a mains failure at the ATS and verify that the start contact closes. Repair ATS control if it does not.
- Controller settings: Review auto start delay and stop delay parameters to ensure they are correctly configured.
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Repair Difficulty
Medium
3/5
Required Part
ATS Remote Start Interface
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