E7 error; display may be blank or flickering; buttons unresponsive or intermittent.

Safety: Unplug the freezer before removing the control panel.

• Remove control fascia: On Zanussi upright freezers, the display is usually in the door or top front panel. Carefully unclip or unscrew the fascia to access the user interface board.
• Check for moisture: Look for condensation or water tracks. Dry gently with a lint-free cloth and allow the board to air dry fully.
• Inspect ribbon cable: Ensure the ribbon or harness between the UI and main PCB is not kinked, cut, or partially unplugged.
• Test buttons: Press each button with power reconnected (if safe and insulated) to see if any are stuck or cause the error. If a specific button is always active, the keypad may be shorted.
• Replace UI board: If the display is dead or erratic and wiring is intact, replace the display/user interface PCB. Transfer any seals or gaskets to prevent future moisture ingress.

After replacement, reprogram any temperature or alarm settings as needed.