Display shows E2, and the unit may overcool or fail to maintain the set temperature in the upper zone (for dual-zone models).

Safety: Disconnect the wine cooler from power before opening any panels.

• Confirm zone: Verify that E2 corresponds to the upper zone in your specific mQuvée model (check the user manual or label on the rear panel).
• Access upper sensor: Remove the upper shelves. Look for a small probe or plastic cover on the rear or side wall of the upper compartment. Gently remove any cover to expose the sensor.
• Visual inspection: Check that the sensor tip is intact and not broken or pulled out of its mounting. Ensure the cable is not cut or pinched by the shelves.
• Rear access: Remove the rear service panel and trace the upper zone sensor wires to the main control PCB. Inspect for damage and secure any loose wiring with cable ties.
• Reconnect: Unplug and reconnect the sensor plug on the PCB to ensure a solid connection.
• Test and replace: If you can measure resistance, compare the upper sensor reading to the lower sensor (if they are of identical type). A large discrepancy or an open/short reading indicates a bad sensor. Replace with a compatible mQuvée upper zone NTC sensor.
• Persistent E2: If a known-good sensor still triggers E2, the main control PCB likely needs replacement. This should generally be handled by a service technician.