Wine cooler runs but cannot reach set temperature; display shows E1 and temperature reading may flash.

Safety first: Unplug the wine cooler from the wall outlet before removing any panels or touching internal wiring.

Steps to check and address E1:

• Power reset: Unplug the unit for 5–10 minutes, then plug it back in. If E1 returns, continue with inspection.
• Locate the cabinet thermistor: On most NewAir wine coolers, the cabinet temperature sensor is a small probe or bullet-style sensor mounted inside the liner (often behind a small plastic cover or routed through the rear wall into the cabinet).
• Inspect the sensor and wiring: Remove the interior shelf near the sensor. Check that the sensor tip is intact and not corroded or broken. Follow the sensor wires to where they exit the liner or connect to the main control board. Look for pinched, cut, or chewed wires.
• Check the connector at the control board: Access the rear or bottom service panel (usually held by Phillips screws). With power still disconnected, remove the panel and locate the main control board. Find the thermistor connector and ensure it is fully seated. Look for discoloration or corrosion on the pins.
• Test the thermistor (optional but recommended): Using a multimeter set to resistance (ohms), disconnect the thermistor from the board and measure its resistance at room temperature. Compare to NewAir’s service specs (commonly 5–50 kΩ depending on sensor type). An open circuit (OL) or 0 Ω indicates a bad sensor.
• Replace if faulty: If the thermistor is out of spec or physically damaged, replace it with a compatible NewAir cabinet temperature sensor / thermistor. Route the new sensor along the original path, avoiding sharp bends and hot components, and secure it with clips or tape as originally installed.
• Reassemble and test: Reinstall panels and shelves, plug the unit back in, and set a mid-range temperature. Allow several hours to verify that the E1 code clears and the cooler maintains temperature.

When to call a technician: If the thermistor tests good but E1 persists, the main control board may be defective and should be diagnosed or replaced by a qualified technician.