E011
EVBox
Phase Loss / Phase Imbalance (Three‑Phase Models)
Charger shows E011; charging stops; may coincide with grid imbalance or phase loss.
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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
One phase missing at supply, Blown upstream fuse on one phase, Loose phase conductor at EVBox terminal block, Faulty phase detection circuit on main board
How to Fix / Troubleshooting
Safety: Phase loss can cause overheating and improper operation. Only an electrician should work on three‑phase circuits.
- Check supply fuses/breakers: Have an electrician verify that all three phases feeding the EVBox are present and that no individual phase breaker or fuse has opened.
- Measure phase voltages: Confirm correct line‑to‑line and line‑to‑neutral voltages on all phases at the EVBox input terminals.
- Inspect terminal block: With power off, check that all phase conductors are fully inserted and clamped in the terminal block. Tighten to the torque specified in the installation manual.
- Test after correction: Restore power and start a charging session. If E011 persists with verified good supply, the phase detection circuit on the main board may be faulty.
- Board replacement: Replace the main control/power board if phase detection is confirmed defective.
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Repair Difficulty
Professional Required
5/5
Required Part
EVBox Input Terminal Block
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