E3 error on display; ice maker may run briefly then shut down, often with no ice production.

Safety First: Disconnect power before removing any panels. Avoid drilling or puncturing cabinet walls; refrigerant lines may be embedded.

Steps:

• Locate ambient thermistor: On many Café ice makers, the ambient or cabinet thermistor is mounted near the air intake grille or behind the front panel, sensing room or cabinet temperature.
• Visual inspection: Check that the sensor is not dangling, damaged, or covered in dust. Clean gently with a soft brush if dirty.
• Check harness and connector: Trace the thermistor wires to the main control board. Ensure the connector is fully seated and free of corrosion or moisture.
• Test resistance (advanced): With power off, disconnect the thermistor and measure resistance at room temperature. Compare to Café’s thermistor chart. Replace if readings are out of range.
• Replace ambient thermistor: Remove any mounting screws or clips, install the new sensor in the same location, and route the harness away from hot components and moving fans.
• If E3 persists: The control board’s sensor circuit may be defective and require replacement by a qualified technician.