Dishwasher displays E17 and may not start or may stop unexpectedly; often linked to power supply or voltage issues on some SMEG models.

Safety first: Disconnect the dishwasher from the mains before inspecting electrical components.

• Check outlet and plug: Verify that the wall socket provides stable voltage and that the plug is fully inserted. Avoid using multi-way adapters or extension leads.
• Inspect mains filter: Access the base and locate the mains filter module where the power cord enters. Check for burn marks, swelling, or loose terminals.
• Test on another circuit: If possible, temporarily connect the dishwasher to a different, known-good circuit to rule out household wiring issues.
• Board inspection: If E17 persists, the internal power supply on the control board may be failing and should be evaluated and replaced by a professional.