Digital display shows E1 and cabinet is not cooling or only slightly cool.

Safety first: Unplug the NutriChef wine cooler from the wall outlet before removing any panels. Do not work on the unit while it is energized.

Step-by-step checks:

• 1. Power reset: Unplug the cooler for 5–10 minutes, then plug it back in. If E1 clears and does not return, it may have been a temporary logic fault.
• 2. Locate the thermistor: Open the cabinet and look for a small probe or plastic-covered sensor on the rear interior wall or side wall (often near the middle shelf). On some NutriChef models, the sensor wire passes through a grommet to the back of the unit.
• 3. Inspect wiring and connector: Remove the rear metal service panel. Trace the thermistor wires to the main control board. Check for loose, corroded, or broken connectors. Reseat the plug firmly.
• 4. Test the thermistor: With the unit unplugged, disconnect the thermistor from the board and measure its resistance with a multimeter. At room temperature (around 77°F / 25°C), most NTC thermistors will read between 5k–50k ohms (check service data if available). If it reads open (OL) or 0 ohms, it is defective.
• 5. Replace the thermistor: If readings are out of range or intermittent when you gently wiggle the wire, replace the cabinet thermistor with a compatible NutriChef temperature sensor. Route the new sensor along the original path and secure it away from moving parts and sharp edges.
• 6. Check the control board: If a known-good thermistor is installed and wiring is intact but E1 persists, the temperature input circuit on the main control board may be faulty and the board will need replacement.

When to stop: If you are not comfortable using a multimeter or accessing the control board, contact a qualified appliance technician.