Display shows E4 and the compressor does not start, or unit shuts down shortly after starting.

Safety: Unplug the ice maker before removing panels. Do not attempt to open the sealed refrigeration system yourself.

Steps:

• Check ventilation: Ensure there is at least 10–15 cm of clearance around the sides and back of the Sencor ice maker. Remove any objects blocking the air vents.
• Clean condenser: Access the rear panel and locate the condenser coil. Use a soft brush or vacuum to remove dust and lint. A clogged condenser can cause overheating and E4 errors.
• Verify fan operation: With the unit reassembled and plugged in, start a cycle and observe the condenser fan through the rear grille. It should start whenever the compressor runs. If it does not spin or is noisy, unplug the unit and replace the condenser fan motor.
• Check ambient temperature: Ensure the ice maker is not placed in a very hot environment (e.g., next to an oven or in direct sunlight), which can trigger over-temperature protection.
• Sensor and sealed system: If airflow is good and the fan works but E4 persists, the evaporator sensor or sealed system may be at fault. Replacing the evaporator NTC sensor is possible for DIYers; sealed system work (refrigerant leak, compressor issues) must be done by a certified technician.