Short answer: F11 means the Miele dishwasher cannot pump water out in the expected time. The usual causes are a clogged filter, a blocked or kinked drain hose, a plugged non-return valve, or a failing drain pump. Clear the drain path first.
Filter and Hose
The most common F11 cause is a clogged filter basket or a restricted drain hose. Debris and grease slow the drain until the control times out. Cleaning the filter and clearing the corrugated hose resolves a large share of F11 calls, and it is worth checking first.
Non-Return Valve and Pump
Miele dishwashers use a non-return valve to keep drained water from flowing back; if it sticks, drainage stalls. If the path is clear, the drain pump itself may be jammed with debris or failing. We test the pump and valve to confirm.
Verifying the Fix
After clearing or replacing the culprit, we run a full cycle and watch the drain to confirm the water leaves cleanly and F11 does not return. That verification distinguishes a real repair from a temporary reset.
Error & Symptom Reference
| Cause | Sign | Fix |
|---|---|---|
| Clogged filter | Standing water | Clean filter |
| Blocked hose | Slow/no drain | Clear or replace hose |
| Stuck non-return valve | Water flows back | Free/replace valve |
| Failed drain pump | No drain, path clear | Test/replace pump |
Before You Schedule Service
Several Miele components can produce this reading, so a methodical check is faster than replacing parts one by one. We work through the likely causes in order, so you pay to fix the real problem on your Miele unit, not a list of guesses. Before the visit, note when the symptom started and what the unit was doing, which shortens the diagnosis. If this has you stuck, we repair these units across the Greenwood Village area and put the price in writing before we start.
Want This Handled for You?
Book a diagnosis. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.