Dishwasher does not power on at all; no lights or display, no response to buttons.

Safety first: Before opening any panels, ensure the circuit breaker is off. Only qualified persons should test live voltage.

• Step 1 – Check external power:
  • Verify the kitchen circuit breaker or fuse has not tripped.
  • Test the outlet with another appliance if the dishwasher uses a plug.
• Step 2 – Inspect power cord and terminal:
  • With power off, access the junction box or terminal block where the cord connects to the dishwasher.
  • Check for loose screws, burnt wires, or melted insulation.
  • Tighten connections and replace damaged wiring.
• Step 3 – Door and control:
  • Ensure the door closes properly; some models will not power the control if the door switch is open.
  • If there is still no sign of life, the power module may be defective.
• Step 4 – Module replacement:
  • Remove the inner door panel to access the control module.
  • Replace the power module with the correct Siemens part if it shows signs of failure and all external power checks are good.

If you are not comfortable working with mains voltage, contact a professional technician.