Wine Enthusiast dual-zone wine cooler displays E3 on the upper or lower zone, temperature reading is inaccurate or dashes.

Safety: Disconnect power before removing any interior panels or control covers.

• Identify affected zone: Note whether E3 appears on the upper or lower display. This indicates which zone sensor is at fault.
• Locate zone sensor: In dual-zone Wine Enthusiast models, each zone has its own sensor mounted on the interior wall or behind a small plastic cover. Remove any decorative cover to access the sensor head and wiring.
• Inspect wiring: Check for pinched or cut wires where the sensor cable passes through the divider between zones or into the cabinet wall. Gently pull on the connector at the control board to ensure it is secure.
• Swap sensors (if identical): On some models, upper and lower sensors are identical. If accessible, temporarily swap the connectors at the control board. If the E3 error moves to the other zone, the sensor is defective.
• Replace the faulty sensor: Order the correct Wine Enthusiast zone temperature sensor for the affected zone. Install it in the same location and route the cable along the original path, securing with clips or tape.
• Power up and verify: Restore power and confirm that the E3 code is cleared and that both zones display realistic temperatures.

If both sensors test good and E3 persists, the dual-zone control board is likely faulty and should be replaced by a professional.