What Dishwasher Won't Drain means (miele dishwasher won’t drain)
When a miele dishwasher won’t drain, it is an observable condition you confirm by behaviour — water is left standing in the base after the cycle. It often appears with the F11 drainage fault code, and the most common cause is a blocked filter, hose, or sump rather than a failed pump.
Symptoms to look for
The signs below help confirm you are dealing with this condition rather than a different fault on your Miele Dishwasher. You may see one of them or several together, and they can build up gradually or appear suddenly after a power event, a long door opening, a spill, or recent service.
- Water sits in the base after the program ends
- Dishes finish wet with residue
- The drain pump may run without clearing water
- An F11 code sometimes accompanies it
Common causes
Several different faults can produce these symptoms. Working through the most likely causes in order helps separate a quick, owner-level check from a problem that needs trained service and the correct Miele parts.
- Blocked drain filter — food debris clogs the base filters
- Kinked or clogged drain hose — flow out is restricted
- Clogged sump or non-return valve — the drain path is jammed
- Failed drain pump — the pump no longer moves water
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where high-voltage parts, gas, the sealed refrigeration system, or a heat-pump compressor are involved, and hand the rest to a qualified technician.
- Switch off, lift out the filters, and rinse them clear under the tap.
- Check the drain hose is not kinked and the sink-drain/air-gap connection is clear.
- Remove any glass, labels, or food from the sump and visible pump area.
- If it still will not drain with a clean filter and hose, book service.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the drain filter, drain pump, drain hose, non-return valve, and sump. The correct part for your Miele Dishwasher is matched from the model and serial number, and genuine Miele components are fitted through trusted parts suppliers rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.
When to call a technician
A dishwasher that will not drain after the filter, hose, and sump are clear needs a technician to test the drain pump and non-return valve. When the fix calls for trained service, book a visit through our scheduling page and an experienced, qualified technician will diagnose and repair it.
Prevention and care
Regular care keeps this condition from returning on your Miele Dishwasher. Keep filters, vents, seals, and the condenser, exhaust, or burner path clean, avoid overloading or blocking airflow, check that doors and seals close cleanly, and follow the Miele maintenance guidance for your model. Note when the symptom first appeared and what changed around the same time — a recent load, a warm room, a power event, a spill, or recent service — because that detail often points a technician straight to the cause and keeps the repair simple.
Related help and Miele resources
Browse other Miele Dishwasher diagnostics, read about Miele Dishwasher repair, look up your unit in the Miele models reference, or the related F11 drainage fault, or schedule a service visit. For Miele manufacturer documentation and model lookup, visit the manufacturer at mieleusa.com.
If the condition persists after the owner checks above, an experienced Miele technician can read the full fault history, test each named component against specification, and fit genuine Miele parts so the dishwasher returns to its proper performance. Most visits resolve the issue in a single trip, and the work is backed by a 30-day labor warranty on the workmanship.
