E15 is displayed and the machine may stop; often associated with low rinse pressure or poor final rinse coverage.

Safety: Turn off power and water supply before dismantling rinse components.

• Clean rinse arms: Remove the upper and lower rinse arms. Use a small brush or toothpick to clear each nozzle of limescale and debris. Rinse thoroughly.
• Check supply valve: Ensure the external rinse water valve (if separate) is fully open and that the building supply pressure meets Wexiodisk requirements.
• Inspect rinse filter: Some models have an inline rinse filter or strainer. Remove and clean under running water.
• Test pressure switch: If fitted, check the rinse pressure switch for correct operation with a multimeter while applying pressure. Replace if faulty.

After cleaning and checks, run several cycles and confirm that E15 does not reappear and that rinse coverage is uniform.