E9
De'Longhi
EEPROM / Memory Error on Main PCB
Display shows E9 and the unit may not respond to remote or panel inputs correctly.
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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
Corrupted control board memory, Voltage spike or surge, Defective main PCB, Poor PCB grounding
How to Fix / Troubleshooting
Safety first: Unplug the unit before any inspection.
- 1. Hard reset: Unplug the unit for at least 15 minutes to allow capacitors to discharge. Plug back in and test.
- 2. Check for moisture: Inspect the control panel and PCB area for signs of condensation or water ingress. Dry thoroughly if moisture is present and correct any source of leaks.
- 3. Surge protection: If E9 appeared after a storm or power event, consider using a surge protector for future protection.
- 4. PCB replacement: If E9 persists, the main control board's memory is likely corrupted. Replacement of the PCB is the standard repair.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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