Microwave shows E11 and keypad or touch controls do not respond correctly.

Safety first: Unplug the microwave before removing any control panel parts.

Simple resets and cleaning:

• Unplug the unit for 5 minutes to reset the control.
• Wipe the control panel surface with a slightly damp, non-abrasive cloth and dry thoroughly. Do not spray cleaner directly onto the panel.
• Ensure no water or steam is condensing behind the panel (common if installed above a hob without proper ventilation).

Ribbon cable check (experienced users):

• Remove the outer cover or front trim to access the control panel.
• Carefully disconnect and reconnect the flat ribbon cable from the keypad to the control board, ensuring it is fully seated.
• Inspect the cable for cracks or corrosion at the contacts.

Next steps: If certain buttons still do not work or E11 remains, the keypad or touch board likely needs replacement. This is usually a straightforward part swap but may require ordering the exact Candy part number.