Ice maker stops producing ice; display shows E1 and unit may shut down shortly after startup.

Safety First: Unplug the Café ice maker or switch off the dedicated circuit breaker before removing any panels. Water and electricity are both present in this appliance.

Step-by-step checks:

• Power cycle the unit: Disconnect power for 5 minutes, then restore power and see if E1 clears. If it returns, continue.
• Access the evaporator thermistor: Remove the front kick plate and lower front panel (typically held by screws). Locate the evaporator plate and the small sensor (thermistor) clipped to or near the evaporator surface with two wires leading back to the control.
• Inspect connections: Check the thermistor plug where it connects to the main control board. Reseat the connector and look for corrosion, moisture, or broken pins.
• Check wiring: Follow the thermistor harness from the evaporator to the control board. Look for pinched, cut, or rubbed-through insulation, especially where the harness passes through metal brackets or foam.
• Test the thermistor (for advanced DIYers): With power still disconnected, disconnect the thermistor from the board and measure resistance with a multimeter. Compare to Café service specs (typically around 10kΩ at room temperature). If reading is open, shorted, or far out of range, the thermistor is bad.
• Replace the evaporator thermistor: If defective, unclip the old sensor, route the new Café-compatible thermistor along the same path, secure it with clips or zip ties away from moving parts, and reconnect to the control board.
• If code persists: The main control board’s sensor input may be faulty. At this point, professional diagnosis is recommended.