Display shows E4 and the unit may run the fan but not produce ice; compressor may not start or may shut off quickly.

Safety first: Unplug the ice maker before touching any components. Do not attempt sealed system repairs (refrigerant) unless you are EPA‑certified.

• Check ventilation: Ensure the ice maker has proper clearance on all sides per the user manual. Remove dust and lint from the condenser coils and fan area using a soft brush and vacuum.
• Inspect condenser fan: With the rear panel removed, verify that the condenser fan spins freely by hand. If it is seized or noisy, the fan motor may need replacement.
• Test start relay and overload: Remove the cover on the side of the compressor to access the start relay and overload protector. Inspect for burn marks or rattling pieces inside the relay. Test continuity through the overload and relay with a multimeter; replace if open or visibly damaged.
• Allow cool‑down: If the compressor is extremely hot to the touch, allow it to cool for 30–60 minutes with the unit unplugged, then try again. Persistent E4 after cool‑down suggests a component fault.
• Evaluate compressor: If the relay and overload test good and the fan and coils are clean, but the compressor hums and trips or does not start, the compressor itself may be failing. This requires a professional sealed system technician.