Freezer shows E10 and may not respond correctly to door openings; interior light or fan behavior may be abnormal.

Safety first: Unplug the freezer before working around the door switch or control wiring.

• 1. Identify door switch type: SMEG freezers may use a mechanical plunger switch in the cabinet frame or a magnetic reed sensor hidden behind the liner, triggered by a magnet in the door.
• 2. Check operation: Open and close the door while observing the interior light and display. If the light does not change state, suspect the switch or sensor.
• 3. Inspect magnet alignment: For magnetic systems, ensure the door magnet is present and aligned with the sensor area. Replace missing magnets and adjust door if necessary.
• 4. Test switch: With power off, remove the switch (if accessible) and check continuity with a multimeter while pressing the plunger. For reed sensors, test continuity while moving a magnet near the sensor location.
• 5. Replace faulty component: Install the correct SMEG door switch or sensor. Reconnect wiring securely and ensure the switch is firmly seated in the cabinet.
• 6. Verify wiring to PCB: Check the harness from the door switch to the main board for breaks or loose connectors.
• 7. Restore power and test: Confirm that the interior light and fan respond correctly to door openings and that E10 is cleared.