Kenmore ice maker shows E4 and stops mid-cycle; compressor may run briefly then shut off.

Safety First: Disconnect power before cleaning or accessing internal components. Allow hot components to cool.

• Improve airflow: Pull the ice maker away from the wall. Ensure there is adequate clearance around the sides and back per the installation manual.
• Clean condenser coils: Remove the lower front or rear grille to access the condenser. Use a coil brush and vacuum to remove dust and lint. This is critical for undercounter Kenmore ice makers.
• Check condenser fan: With the unit unplugged, spin the condenser fan blade by hand. It should move freely. If stiff or noisy, the fan motor may be failing.
• Inspect temperature sensor: Locate the cabinet or ambient thermistor (often clipped near the evaporator or in the air path). Check for loose mounting or damaged wires. Reseat the connector at the control board.
• Reset and test: Plug the unit back in and allow it to run. If E4 returns quickly, the thermistor or control board may be out of calibration and require replacement.