AL10
Lelit
Control Board / Firmware Communication Fault
Machine displays AL10; communication or configuration error; machine may not respond to controls.
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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 firmware or configuration on main board, Loose ribbon cable between display board and main board, Faulty display PCB, Main control board failure
How to Fix / Troubleshooting
Safety first: Disconnect power before opening the machine. Electronic boards are sensitive to static and mains voltage.
- Power reset: Unplug the machine for at least 10 minutes, then plug back in and restart. Sometimes AL10 clears after a full power-down.
- Check display connections: Remove the front panel or top cover to access the display PCB. Reseat any ribbon cables or multi-pin connectors between the display and main board.
- Inspect for moisture: Look for signs of water ingress or steam condensation on the display and control boards. Dry gently and correct any leaks from the group or steam wand.
- Firmware / configuration: Some Lelit models allow firmware updates via service tools. If AL10 appeared after a failed update, a reflash by an authorized service center may be required.
- Board replacement: If connections are sound and AL10 persists, the display board or main control board may need replacement. This is typically a technician-level repair.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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