The oven will not start cooking; the display shows the time, but pressing Start has no effect; no error code is shown.

Safety first: No internal work is needed initially; follow the programming steps first.

• Check timer mode: Ensure the electronic timer is set to manual or continuous mode (often indicated by a hand symbol). Cancel any automatic programs.
• Disable child lock: Follow the user manual to deactivate the child lock (commonly by holding a specific key combination for several seconds).
• Cancel delayed start: Verify that no delayed start time is set; reset the timer if necessary.
• Test Start button: If the oven still does not start, the Start key or touch area may be faulty. Inspect and, if needed, replace the UI board.