Display shows E6 and the refrigerator may not respond correctly to user settings or may overcool/undercool.

Safety first: Disconnect the appliance from mains before accessing the control board.

E6 generally indicates an internal fault or communication error in the main control electronics.

• Step 1 – Power cycle: Unplug the refrigerator for at least 10–15 minutes to allow capacitors to discharge. Plug back in and check if E6 clears.
• Step 2 – Check supply voltage: Ensure the wall outlet provides stable voltage within the specified range (typically 220–240 V in EU). Avoid using low-quality extension leads.
• Step 3 – Inspect control board: Remove the top or rear control cover (location varies by model) to access the main PCB. Look for burnt components, swollen capacitors, or signs of moisture ingress.
• Step 4 – Dry and clean: If there is condensation or minor moisture, gently dry the area and ensure ventilation openings are not blocked.
• Step 5 – Replacement: If visible damage is present or E6 persists after reset, the main PCB will usually need replacement with the exact SMEG part number. This involves transferring connectors one by one to the new board.
• Step 6 – Professional service: Because miswiring can cause further damage, PCB replacement is best handled by an authorised technician.