Display shows E0 and the wine cooler does not cool or responds erratically to temperature changes.

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

• Power reset: Unplug the unit for 5–10 minutes, then plug it back in to see if the E0 code clears. Sometimes a transient communication glitch can trigger this code.
• Access the control board: Remove the rear lower service panel (usually held by Phillips screws). Locate the main control board and identify the temperature sensor connectors (often labeled NTC, SENSOR, or with cabinet zone labels).
• Check sensor connections: Gently press each sensor plug firmly into its socket. Look for bent pins, corrosion, or partially seated connectors. Reseat any loose plugs.
• Inspect the sensor harness: Follow the thin sensor wires from the board into the cabinet. Check for cuts, pinches, or insulation damage, especially where the harness passes through grommets or metal openings.
• Test the sensor (if you have a multimeter): With the unit unplugged, disconnect the suspected NTC sensor and measure resistance across its two leads. At room temperature (20–25°C / 68–77°F), most Aobosi NTC sensors read between 5 kΩ and 50 kΩ. An open circuit (infinite resistance) or 0 Ω indicates a failed sensor.
• Replace the faulty sensor: If resistance is out of range or intermittent when you gently flex the wire, replace the cabinet temperature sensor with an OEM Aobosi-compatible NTC probe. Route the new sensor along the original path and secure it away from moving parts and sharp edges.
• If E0 persists: The sensor input circuit on the main PCB may be defective. In that case, replace the main control board or contact an authorized Aobosi service technician.