Liebherr No Power / Main Supply Fault

Washer-dryer does not start at all; no lights or display, as if completely dead.

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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

Blown mains fuse, Faulty power cord, Defective mains filter (EMI filter), Failed main control board power supply

How to Fix / Troubleshooting

Safety first: Only qualified persons should work on live electrical circuits. Always unplug before opening panels.

  • Check outlet and fuse: Test the wall socket with another appliance. Check the household fuse or breaker.
  • Inspect power cord: Look for cuts, burns, or kinks in the Liebherr power cord. Replace if damaged.
  • Check mains filter: Access the mains filter module where the cord enters the machine. Inspect for burning or swelling. Replace if faulty.
  • Control board power: If the mains filter is good, the internal power supply on the main PCB may have failed. Board replacement is usually required and should be done by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Mains Filter Module
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