E10
Hager Phase Sequence / Phase Loss Fault

Hager EV charger displays E10; app may show ‘phase sequence error’ or ‘phase configuration fault’ on three‑phase models.

Advertisements

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.

Advertisements

Possible Causes

Incorrect phase order (L1/L2/L3 swapped) at supply, Missing phase due to blown upstream fuse or MCB, Loose terminal on one phase inside charger, Faulty phase detection circuit on main PCB

How to Fix / Troubleshooting

Safety first: Phase wiring errors can damage equipment. Only a qualified electrician should work on three‑phase connections.

Steps to try:

  • Do not use the charger: Turn OFF the three‑phase breaker feeding the charger until wiring is checked.
  • Verify phase presence (electrician only): Measure voltage between all phases and neutral at the charger input. Confirm all phases are present and within tolerance.
  • Check phase sequence: Ensure L1, L2, and L3 are connected to the correct terminals as per Hager wiring diagram. Correct any swapped conductors.
  • Inspect internal terminals: Tighten all phase and neutral terminals to the specified torque.
  • If wiring is correct: The phase detection circuit on the main control board may be faulty and should be replaced by a Hager‑authorised technician.
Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Phase Detection Circuit / Main Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements