Wine cooler displays E2 and may run the compressor and fan erratically or not at all.

Safety warning: Always disconnect the appliance from power before removing interior panels or touching wiring. Sharp metal edges may be present around the evaporator.

Steps to address E2:

• Defrost first: If there is heavy ice on the back panel, unplug the unit and allow it to defrost fully (at least 12 hours with the door open and towels at the base). E2 can sometimes be triggered by an iced-over sensor.
• Access the evaporator: Remove shelves and the rear interior panel to expose the evaporator coil. The evaporator NTC sensor is usually clipped directly to the coil or inserted into a small well on the evaporator.
• Check sensor placement: Ensure the sensor is firmly clipped to the coil and not hanging loose. A loose sensor can give incorrect readings and trigger E2.
• Inspect wiring: Look for brittle or cracked insulation, especially where the sensor wire exits the foam insulation. Repair minor insulation damage with electrical tape; replace the harness if conductors are exposed or broken.
• Test the sensor: With the unit unplugged, disconnect the sensor from the control board and measure resistance. Compare to expected NTC values (e.g., higher resistance when cold, lower when warm). If the sensor is open or shorted, it must be replaced.
• Replace the evaporator sensor: Order a SMEG-compatible evaporator NTC sensor. Install it in the same location and orientation on the evaporator coil, securing it with the original clip or a new clip rated for cold environments.
• Evaluate the control PCB: If the sensor and wiring are good, the main control PCB may be defective. Visual inspection for burnt tracks or components can help, but replacement should be done by a professional.

Note: Do not puncture the evaporator coil or insulation when routing the sensor; refrigerant leaks are expensive to repair and require a licensed technician.