Display shows E3 and the wine cooler may overcool or not cool at all; temperature reading may be inaccurate.

Safety: Unplug the wine cooler before removing the control panel or top cover. Avoid static discharge when handling the control board.

Steps to address E3:

• Check installation environment: Ensure the cooler is not installed in direct sunlight, near ovens, or in unconditioned spaces outside the rated ambient temperature range. Extreme ambient conditions can trigger sensor-related errors.
• Access the control panel: Remove screws securing the top or front control panel (varies by Kenmore model). Carefully pull the panel forward to expose the wiring.
• Locate the ambient sensor: The ambient thermistor is often mounted near the control board or behind the display, with two small wires leading to the board.
• Inspect wiring and connector: Look for loose plugs, corrosion, or damaged insulation. Reseat the connector firmly on the control board.
• Test the sensor: Disconnect the sensor and measure resistance at room temperature. Compare to typical NTC values (around 5k–10k ohms at 77°F / 25°C). Replace if reading is open, shorted, or far out of range.
• Replace if needed: Install a new ambient temperature sensor (thermistor) designed for your Kenmore wine cooler. Route the wires away from sharp edges and hot components.
• Reassemble and test: Reinstall the control panel, restore power, and verify that E3 clears and the displayed temperature responds reasonably to room changes.

When to seek service: Persistent E3 with a known-good sensor suggests a defective main control board.