- Turn the dishwasher off and isolate power at the wall or breaker.
- Shut off the water supply if there is visible leaking or the machine keeps filling.
- Check the door seal, inlet hose, and the floor around the dishwasher for visible water.
- Do not restart the machine until the cause of the leak or overflow has been checked.
Kuppersbusch uses e:15 for a leak, overflow, or anti-flood protection event. The dishwasher has detected water where it should not be, or the fill level has exceeded the safe threshold.
- The machine stops and shows e:15, sometimes with the drain pump running continuously.
- There may be water in the base tray or on the floor around the dishwasher.
- The dishwasher may refuse to start a new cycle until the fault clears.
- A real leak from a hose, seal, or internal water path.
- Oversudsing or overfill causing water to collect in the base.
- A sticking inlet valve or level control issue letting too much water enter.
- Residual water in the base tray triggering the anti-flood switch.
- Inspect the door seal for trapped debris or visible damage.
- Check the inlet hose and drain hose connections for drips or loose fittings.
- Consider whether too much detergent or the wrong detergent was used recently.
- If the dishwasher shows the same code again after drying out, the leak source or level-control fault still needs repair.
- Do not leave the dishwasher running unattended if it has already shown a leak or overflow code.
- Water and mains electricity are a risky combination, so isolate power before inspecting connections.
Book service if e:15 returns after drying and the simple hose or seal checks, or immediately if there is an active leak, repeated flooding, or visible damage to valves, hoses, or seals.