Freezer shows E6 and interior light and display may function, but cooling is erratic or absent.

Safety first: Disconnect the freezer from mains before accessing the control board. Static discharge can damage electronics—ground yourself before handling PCBs.

• 1. Power cycle: Unplug the appliance for 10–15 minutes to allow capacitors to discharge, then reconnect. If E6 clears temporarily and returns, suspect a control fault.
• 2. Access main PCB: On many SMEG freezers, the main board is located behind the rear lower panel or in a top control housing. Remove the appropriate cover.
• 3. Visual inspection: Look for burnt tracks, discolored components, bulging capacitors, or signs of moisture damage on the PCB.
• 4. Check connectors: Ensure all harness plugs are fully seated and locked. Look for bent pins or corrosion, especially on high-current connectors.
• 5. Surge protection: If there are signs of lightning or surge damage, consider using a surge-protected outlet after repair.
• 6. Replace PCB if necessary: If no external wiring issues are found and E6 persists, replace the main control board with the exact SMEG part number. Transfer any jumper settings or configuration plugs from the old board as per service instructions.
• 7. Reassemble and test: Restore power, set the desired temperature, and verify normal operation without E6.

Note: Board-level component repair is not recommended for untrained users; replacing the entire PCB is the standard remedy.