Charger shows E11 and refuses to start; often after a configuration change or power outage.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Do not exceed the circuit breaker rating when changing settings.
- Factory reset: Use the charger’s menu, app, or reset button sequence to restore factory defaults. Refer to the user manual for the exact procedure.
- Re-enter settings: Set the maximum charging current to match or be below the circuit breaker rating (e.g., 40 A on a 50 A breaker).
- Complete firmware update: If E11 appeared after an update, retry the update process using a stable network connection and following United Chargers’ instructions.
If the charger cannot save settings or repeatedly loses configuration, the non-volatile memory on the control board is likely failing and the board should be replaced.
Repair Difficulty
Required Part
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