Andersen Intermittent Power / Internal Reset

Charger randomly restarts or reboots during charging; LEDs go off and back on, app disconnects briefly.

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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

Loose supply connection at terminal block, Faulty internal power supply on main control PCB, Overheating causing thermal shutdown, Voltage dips on supply circuit

How to Fix / Troubleshooting

Safety first: Frequent restarts can stress components and interrupt charging. If restarts are frequent, reduce use until resolved.

User steps:

  • Note when restarts occur (e.g. at high current, during other household loads).
  • Reduce maximum charge current in the Andersen app and see if stability improves.

For an electrician/technician:

  • Check tightness of supply terminals and inspect for signs of arcing.
  • Measure supply voltage during charging to detect dips.
  • Inspect the main control PCB for PSU issues or overheating; replace the PCB if the internal PSU is unstable.
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Repair Difficulty

Hard 4/5

Required Part

Supply Terminal Block / Main Control PCB
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