E11 appears and the coffee strength or brew size selection does not respond; the unit brews only a default cycle.

Safety: Unplug the coffee maker before removing the front panel.

• 1. Inspect for moisture:
  • Check around the control panel for signs of condensation or coffee spills.
  • Dry the area thoroughly with a soft cloth; allow the unit to air dry for several hours.
• 2. Reseat ribbon cable:
  • Remove the front bezel to access the keypad ribbon cable connection to the control board.
  • Carefully unplug and reinsert the ribbon, ensuring it is fully seated and locked.
• 3. Test keypad:
  • With the unit reassembled enough to power safely, test each button for response.
  • If certain keys still do not work, the membrane keypad is likely defective and should be replaced.
• 4. Inspect control board UI section:
  • Look for corrosion or damage where the ribbon connects to the PCB.
  • If traces are corroded or components are damaged, replace the main control PCB.