E18
Aqmos
Internal Communication / Interface Fault
E18 displayed and unit reports communication error between display and main board
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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 interface cable, Oxidized connectors, Faulty display board, Faulty main control PCB
How to Fix / Troubleshooting
Safety: Disconnect power before opening the control housing.
- Inspect cables: Locate the cable between the display/keypad module and the main PCB. Unplug and replug both ends to clean contacts.
- Check for corrosion: Look for green or white corrosion on connectors. Clean gently with contact cleaner and a soft brush.
- Test with minimal configuration: If possible, disconnect non-essential accessories (salt sensor, external modules) to see if E18 clears, indicating a bus conflict.
- Module substitution: If available, test with a known-good display module or main PCB to isolate the faulty component.
- Replace defective board: Replace the display module or main control PCB as indicated by testing.
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Repair Difficulty
Hard
4/5
Required Part
Display Module / Control PCB
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