E10
Hewalex
Communication Error Between Main PCB and Display/Remote Controller
Display shows E10; unit does not respond to commands or stops unexpectedly.
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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
Loose communication cable between main board and user interface, Damaged communication harness, Faulty display panel, Faulty main control PCB
How to Fix / Troubleshooting
Safety first: Isolate power before removing the front panel or display.
- Check communication cable: Locate the low-voltage cable connecting the main PCB to the display or remote controller. Ensure both ends are fully seated.
- Inspect for damage: Look for crushed, cut, or water-damaged sections of the cable, especially where it passes through cabinet openings.
- Clean connectors: If accessible, gently clean the plug contacts with electrical contact cleaner and reconnect.
- Test with power: Restore power and see if the display initializes correctly. If E10 remains, either the display module or main PCB may be defective.
- Module replacement: Replacement of the display or main board should follow Hewalex service procedures to avoid ESD damage and configuration errors.
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Repair Difficulty
Hard
4/5
Required Part
Control Panel Communication Cable
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