Display shows E1 and cabinet is not cooling or cooling poorly.

Safety first: Unplug the Antarctic Star wine cooler from the wall outlet before removing any panels. Do not work on live wiring.

• Power reset: Unplug the unit for 5–10 minutes, then plug it back in to see if the E1 code clears. If it returns, continue.
• Locate the cabinet thermistor: Inside most Antarctic Star wine coolers, the temperature sensor is a small probe or plastic-covered bulb mounted on the rear interior wall or near the evaporator cover. Remove any interior shelves to access it.
• Inspect the sensor and wiring: Check for cuts, pinched wires, or corrosion at the sensor connector. Make sure the sensor is firmly clipped in place and not dangling.
• Test the thermistor (if you have a multimeter): Disconnect the thermistor from the harness and measure resistance at room temperature. A typical NTC thermistor will read between 5–50 kΩ at ~25°C. If it reads open (OL) or 0 Ω, it is defective.
• Check the harness to the control board: Remove the rear metal cover to access the main control PCB. Trace the thermistor wires to the board and ensure the plug is fully seated and not burnt or loose.
• Replace the thermistor: If readings are out of range or wiring is damaged, replace the cabinet temperature sensor / thermistor designed for your Antarctic Star model. Route the new sensor along the original path and secure it with clips or tape to avoid contact with the evaporator fins.
• Control board check: If a known-good thermistor is installed and E1 persists, the temperature input circuit on the main control PCB may be faulty and require replacement.