Display shows E3 and temperature readings are unstable or clearly incorrect.

Safety: Unplug the wine cooler before removing the toe-kick or rear panel.

• Find the ambient sensor: Many Climadiff models use an ambient NTC near the front ventilation grille or behind the control panel to adjust compressor operation based on room temperature.
• Check mounting: Ensure the sensor is not hanging loose inside the cabinet base; it should be positioned where it can sense room air, not internal cabinet air or condenser heat.
• Inspect wiring: Look for crushed or abraded wires around the front feet, grille, or hinge area.
• Test resistance: Measure the NTC at room temperature and compare to the expected value. Replace if open, shorted, or far out of range.
• Reconnect and secure: Reseat the connector on the main PCB and secure the sensor in its original clip or bracket.
• Power up: Restore power and confirm that the E3 code disappears and that temperature readings stabilize over the next few hours.