Andersen Overheating Component / Insulation Breakdown

Unusual burning smell from the Andersen charger during or after charging.

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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 high‑current connection causing arcing, Failing contactor or terminal block, Overheated cable insulation due to overload, Internal component failure on main control PCB

How to Fix / Troubleshooting

Critical safety warning: A burning smell indicates overheating and potential fire risk. Immediately stop charging, unplug the EV if safe, and turn off the charger at the consumer unit. Do not use the charger again until inspected.

User steps:

  • Do not remove the cover or attempt to locate the smell source yourself.
  • Ventilate the area if there is smoke, and be prepared to call emergency services if the smell intensifies.

For a qualified technician:

  • Isolate power and open the unit.
  • Inspect all terminals, the contactor, and the main control PCB for signs of overheating, discoloration, or melted insulation.
  • Tighten or replace any overheated terminals, replace the contactor or PCB if damaged, and test the unit under controlled load before returning to service.
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Repair Difficulty

Professional Required 5/5

Required Part

Terminal Block / Output Contactor / Main Control PCB
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