Display shows E1 and the wine cooler runs continuously or not at all; temperature reading is inaccurate or dashes.

Safety warning: Disconnect power before removing rear or interior panels. Sharp metal edges can cause cuts—wear gloves.

E1 typically indicates the evaporator temperature sensor is open, shorted, or out of range.

• Access the evaporator area: Remove the interior rear panel inside the cooler (usually held by a few screws). Behind it you will see the evaporator coil and a small sensor clipped to the tubing.
• Inspect the sensor: Verify the sensor is firmly clipped to the evaporator coil and the wires are not broken or iced over. If heavily iced, allow the unit to fully defrost (door open, unplugged) for several hours, then recheck.
• Check the connector: Trace the sensor wires to the harness plug and ensure it is fully seated in the control board or intermediate connector.
• Test/replace: Use a multimeter to check resistance. If the reading is infinite (open) or near 0 ohms at room temperature, replace with a compatible Luma evaporator temperature sensor.
• Reassemble: Reinstall the rear panel, restore power, and monitor for 20–30 minutes to confirm the E1 code clears and normal cooling resumes.

If the sensor is good but E1 persists, the main control board may be defective and should be evaluated by a technician.