E12
Severin Low Voltage / Power Supply Fault

Display shows E12 and the machine shuts down shortly after switching on, sometimes with dim or flickering display.

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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

Defective internal power supply board, Loose mains connection, Blown varistor or fuse on PCB, Shorted component drawing excessive current

How to Fix / Troubleshooting

Safety first: Unplug the coffee maker before inspecting the power cord or socket.

This error indicates an internal power problem.

  • Check outlet: Test the wall socket with another appliance to ensure it provides stable power.
  • Inspect power cord: Look for cuts, kinks, or burn marks on the Severin power cord. Do not use the machine if damage is visible.
  • Avoid extension cords: Plug the machine directly into a wall outlet.
  • Reset: Leave unplugged for 10 minutes, then reconnect.
  • Do not open live circuits: Internal power supply repairs involve mains voltage and should only be performed by qualified personnel.
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Repair Difficulty

Professional Required 5/5

Required Part

Power Supply / Main Control PCB
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