Display shows E14 and the refrigerator may not respond correctly to temperature setting changes.

Safety warning: Disconnect power before opening the control panel.

Steps:

• 1. Check for stuck buttons: Press each control button several times. If any feel stuck or do not click, they may be mechanically jammed.
• 2. Remove the control panel: Carefully remove the front panel to expose the keypad or UI PCB. Inspect for signs of liquid spills or condensation.
• 3. Clean contacts: If the keypad uses a membrane or rubber dome, gently clean the surface with isopropyl alcohol and a lint-free cloth. Allow to dry completely.
• 4. Inspect PCB: Look for corroded or lifted traces around the button contacts. If damage is extensive, replace the UI PCB.
• 5. Test after reassembly: Refit the panel, restore power, and test each button. If E14 remains and buttons do not respond, the main PCB input circuit may be faulty and require replacement.

Note: Avoid spraying cleaners directly onto the control panel; apply to a cloth first.