E06
Andersen Input Undervoltage / Brownout Protection

Charger shows E06; app reports 'Undervoltage / Brownout'. Charging will not start or stops unexpectedly.

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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

Supply voltage sag due to overloaded circuit, Loose line or neutral connection at Andersen terminal block, Undersized supply cable causing voltage drop, Faulty voltage sensing on main control PCB

How to Fix / Troubleshooting

Safety first: Repeated undervoltage can stress the charger and EV. Avoid using the charger until the supply is stable.

User checks:

  • Note if E06 occurs when other heavy loads (electric shower, oven, heat pump) are running. This suggests supply sag.
  • Try charging at a lower current if your Andersen app allows (e.g. reduce from 32A to 16A) and see if the error disappears.
  • Power cycle the charger once to clear any latched error.

For an electrician:

  • Measure voltage at the Andersen terminals during charging and with other household loads on.
  • Check tightness of line and neutral at the charger terminal block and consumer unit.
  • Verify cable size and run length are appropriate for the configured current.
  • If wiring and supply are sound, test the voltage sensing circuit on the main control PCB and replace if defective.
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Repair Difficulty

Hard 4/5

Required Part

Supply Cable / Main Control PCB
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