E11
Volvo Phase Loss / Phase Sequence Fault

Charger shows E11 or 'Phase Error'; on three‑phase installations, charging may be reduced or disabled.

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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

Missing phase at charger input due to blown fuse or loose connection, Incorrect phase rotation (L1‑L2‑L3 swapped) on Volvo three‑phase charger, Faulty phase detection circuit on control board, One phase open in upstream supply

How to Fix / Troubleshooting

Safety first: Three‑phase systems are hazardous. Only a qualified electrician should work on live circuits.

  • Verify supply phases: Have an electrician measure voltage between all phase pairs (L1‑L2, L2‑L3, L1‑L3) and each phase to neutral at the charger input. Any missing or low phase indicates a supply issue.
  • Check upstream protection: Inspect any three‑pole breakers or fuses feeding the charger. Replace blown fuses and correct any single‑phasing.
  • Confirm phase order: Some Volvo chargers require correct phase rotation. If indicated in the manual, swap phases at the input block to achieve the correct sequence.
  • Inspect input terminals (power OFF): Tighten all phase conductors at the charger input and look for heat damage.

If supply and wiring are correct but E11 remains, the phase detection circuitry on the main control board may be faulty and require replacement.

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Repair Difficulty

Professional Required 5/5

Required Part

Volvo EV Home Charger Three‑Phase Input Assembly
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