E5 appears on the display, unit may start but stops quickly, ice size is inconsistent or no ice is produced.

Safety first: Unplug the ice maker before touching the evaporator plate or internal wiring.

• Locate the thickness sensor: On many Severin ice makers, a small metal probe or sensor is positioned near the evaporator plate to detect ice thickness or temperature.
• Clean the sensor: Use a soft cloth soaked in warm water and a little white vinegar to gently clean the sensor and surrounding area. Remove any lime scale or slime that could insulate the sensor.
• Check alignment: Ensure the sensor or probe is correctly positioned relative to the evaporator plate as per the user manual. If it has been bent away, carefully reposition it so it can accurately sense ice thickness.
• Inspect wiring: Follow the sensor wires back to the control PCB. Confirm the connector is firmly seated and the cable is not damaged or pinched.
• Test the sensor: Measure the resistance of the thermistor-type thickness sensor at room temperature. Compare to typical NTC values (often 5–20 kΩ at 25°C). An open or shorted reading indicates a failed sensor.
• Replace sensor: If cleaning and reseating do not clear E5 and the sensor tests bad, replace the ice thickness sensor assembly. If a new sensor does not resolve the error, the control PCB may be faulty.