Dishwasher powers on but will not start when Start button is pressed; no error code displayed.

Safety first: Disconnect power before removing the control panel.

Steps:

• Check indicators: Look for a child lock symbol on the display. If present, consult the user manual to disable the lock (often by holding a specific button combination for several seconds).
• Confirm door closure: Ensure the door is firmly closed and latched. Try pressing the door inward while pressing Start.
• Reset program: Cancel any active program by holding the Start/Cancel button for several seconds, then reselect a cycle and press Start again.
• Inspect control panel: If some buttons work but Start does not, the membrane switch or touch panel may be faulty and require replacement.

When to call a technician: If the user interface board or door switch circuit is defective, professional service is recommended.