Multicooker will not start a program and displays E1 shortly after power-on or when pressing Start.

Safety first: Unplug the multicooker before opening any covers. Never bypass safety switches during cooking.

Steps to check and correct:

• Verify lid closure: Open and close the lid firmly several times. Ensure the latch clicks positively and there is no food residue or warped silicone ring preventing full closure.
• Inspect the latch area: Look for broken plastic around the latch hook and the metal catch on the body. Clean any stuck food or dried sauce with a damp cloth and mild detergent, then dry thoroughly.
• Check the lid switch actuator: On many Siemens multicookers, a small plastic pin or tab on the lid presses a microswitch in the body. Confirm the pin is not broken or bent. If missing, the entire lid assembly may need replacement.
• Test the switch (advanced): With the unit unplugged and outer cover removed (if you are competent and this does not void warranty), locate the lid microswitch on the control board bracket. Use a multimeter in continuity mode to verify the switch closes when manually pressed. If it does not, replace the lid switch assembly.
• Reassemble and test: Refit covers, plug in, and start a simple program (e.g., warm or steam) to confirm the error is cleared.

When to call a technician: If the switch tests good but the control board still reports E1, the input circuit on the main PCB may be faulty and should be diagnosed by a professional.