How to Fix / Troubleshooting

Safety first: Unplug the cooker. Do not spray liquids directly onto the control panel.

Dry the panel: If a spill occurred, leave the cooker unplugged and the panel exposed to air for at least 24 hours. Gently wipe the surface with a dry cloth.
Check for stuck buttons: Press each button individually to feel for normal travel. If any button feels stuck, clean around its edges with a slightly damp cotton swab, then dry.
Open the fascia: Remove the front panel to inspect the keypad PCB and ribbon cable. Look for corrosion or sticky residue; clean with isopropyl alcohol and allow to dry.
Reconnect cables: Reseat the keypad ribbon cable on both ends.
Replace keypad: If certain keys remain permanently activated (verified with a multimeter or by behavior), replace the keypad/touch panel assembly.

E15 is displayed and the cooker beeps continuously; no program can be selected.

Possible Causes