Ice maker stops mid-cycle and displays an over-temperature or high temperature alarm.

Safety first: Unplug the unit before accessing internal components.

Steps to resolve:

• Check door/bin closure: Ensure the ice bin or door closes fully and that no ice is obstructing the closure. Remove excess ice and clean the gasket.
• Inspect door gasket: Look for tears, warping, or gaps in the gasket. Close a sheet of paper in the door and pull; if it slides out easily, the seal is weak. Replace the gasket if necessary.
• Clean condenser: Remove the front or rear grille and vacuum the condenser fins. Use a soft brush to remove stubborn dust. Improved airflow can quickly reduce internal temperatures.
• Check circulation fan: Open the internal panel to access the evaporator/circulation fan. Confirm it spins freely and runs during operation. Replace the fan motor if seized or noisy.
• Test cabinet sensor: Locate the cabinet temperature sensor (NTC) usually mounted on the liner wall. Disconnect and measure resistance at known temperatures; compare to SMEG's resistance chart. Replace the sensor if readings are incorrect.
• Reset alarm: After correcting issues, reconnect power and press the alarm reset or power button as per the user manual to clear the E04 code.