Multicooker displays E12 and will not start; may occur after a power outage or surge.

Safety first: Unplug the cooker before inspecting the cord or internal components. Do not operate the unit on damaged wiring.

Steps to check:

• Verify outlet: Test the wall socket with another appliance to ensure it provides stable power. Avoid using long extension cords or multi-plug adapters.
• Inspect power cord: Check the Siemens power cord for cuts, kinks, or burn marks. Replace the cord set if any damage is found.
• Check mains inlet: Ensure the cord is fully inserted into the cooker’s inlet (if detachable) and that the inlet is not loose.
• Internal inspection (advanced): Remove the housing to access the main PCB. Inspect the power supply section (near the mains input) for burnt components or bulging capacitors.
• Measure output (qualified persons only): A technician can measure the low-voltage outputs from the power supply to confirm if they are within Siemens specifications.

When to call a technician: E12 typically indicates an internal power supply fault; main PCB repair or replacement should be performed by a professional.