F11
Miele
Drain Pump / Waste Water Fault
Display shows F11; machine reports a drainage or waste water fault (on plumbed-in models)
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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
Blocked drain hose, clogged drain pump, kinked waste water hose, failed drain pump motor
How to Fix / Troubleshooting
Safety first: Disconnect power and close any water supply valves before working on plumbing.
User-level checks (plumbed-in Miele CVA models):
- Inspect the external drain hose for kinks or clogs.
- Ensure the household drain connection is not blocked.
Technical steps:
- Access the internal drain pump (if fitted) by removing the lower front or rear panel.
- Check the pump inlet for coffee grounds, scale, or debris and clean thoroughly.
- Verify that the pump impeller spins freely.
- Measure the pump motor resistance and check wiring connections.
Resolution:
- Clear any blockages in the drain hose and pump.
- Replace the drain pump if it is electrically open, seized, or leaking.
- If the pump is good but never receives power, the control board output may be defective and should be serviced professionally.
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Repair Difficulty
Hard
4/5
Required Part
Drain Pump (Waste Water Pump)
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