E18 error and the unit indicates an internal leak or cabinet water detection.
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.
Possible Causes
How to Fix / Troubleshooting
Safety: Unplug the unit and close the inlet valve immediately to stop water flow.
Steps:
- Inspect cabinet: Remove the front or top cover and look for standing water inside the AquaClean cabinet.
- Dry leak sensor: Locate the leak sensor pad or probe at the base. Dry it thoroughly with towels and allow the area to air dry.
- Check connections: Examine all internal fittings, brine lines, and the valve body for drips or mineral tracks indicating a slow leak.
- Tighten fittings: Gently tighten any loose compression or threaded fittings. Do not overtighten plastic parts.
If a crack in the valve body or tank is found, the affected AquaClean component must be replaced. If no leak is present but E18 recurs, the leak sensor itself may be faulty.
Repair Difficulty
Required Part
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