Washer-dryer does not start at all; no lights or display

Safety first: Ensure the wall socket is safe and not overloaded. Do not open live circuits.

Step-by-step checks:

• 1. Verify power source:
  • Test the wall socket with another appliance.
  • Reset any tripped breakers or replace blown fuses as appropriate.
• 2. Check mains cable:
  • Inspect the cable for cuts, kinks, or burn marks.
  • If damaged, replace the cable assembly.
• 3. Internal power path:
  • With the machine unplugged, remove the top cover.
  • Check the mains filter and connections to the power module for burns or loose wires.
• 4. Power module:
  • If supply is present at the module but no standby or display, the module is likely faulty and must be replaced.

When to call a technician: If you are not trained to work on mains circuits, contact an authorized Siemens technician.