E5
De'Longhi
Compressor Overload / High-Pressure Protection
Display shows E5 and the unit stops; may occur during compressor start.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Blocked condenser airflow, Dirty condenser coil, Faulty condenser fan motor, Overcharged or restricted refrigerant system, Defective high-pressure switch
How to Fix / Troubleshooting
Safety first: Unplug the unit and allow it to cool for at least 30 minutes before inspection.
- 1. Clean condenser area: Remove dust and lint from the rear grille and condenser fins using a soft brush and vacuum. Ensure at least 12–16 inches clearance behind and around the unit.
- 2. Check exhaust hose (portable units): Ensure the hose is properly connected, not kinked, and within the recommended length. Poor exhaust can cause high pressure.
- 3. Verify fan operation: Run the unit in FAN mode and confirm the rear/condenser fan runs smoothly. If the fan is not running or is very slow, the fan motor or capacitor may be failing and should be replaced.
- 4. Reset and test: After cleaning and confirming fan operation, plug the unit back in and test in COOL mode. If E5 returns quickly, stop using the unit.
- 5. Technician checks: A professional should test the high-pressure switch, refrigerant charge, and look for restrictions or overcharge conditions.
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Repair Difficulty
Hard
4/5
Required Part
Condenser Fan Motor
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