Display shows E3 and the refrigerator runs continuously or not at all; defrost cycles seem abnormal.

Safety: Unplug the appliance before opening the freezer evaporator area.

• Access evaporator: Remove freezer drawers and the rear interior panel to expose the evaporator coil.
• Locate defrost/evaporator sensor: It is usually clipped to the evaporator tubing or attached with a metal clip and covered in a small plastic sleeve.
• Check placement: Ensure the sensor is firmly attached to the coil. A loose sensor can misread temperature and trigger E3.
• Inspect wiring: Look for brittle or cracked insulation, especially near the coil where ice forms. Repair minor insulation damage with electrical tape; replace the sensor if wires are broken.
• Replace sensor if needed: Install a Cecotec evaporator/defrost NTC sensor, routing the cable along the original path and securing it away from the heater element.
• Defrost fully: If there is heavy ice buildup, fully defrost the evaporator with the unit unplugged and doors open for several hours or using a hair dryer on low, avoiding direct heat on plastic.
• Restore power: Reassemble, plug in, and allow several hours for normal operation. The E3 code should clear once the control detects valid sensor readings.