Miele Dishwasher Not Draining: F11 Error Fix Guide for Denver Homeowners

The Miele F11 error code — or water standing in the bottom of the tub after a cycle — is the most common Miele dishwasher service call. The good news is that the most common cause is a clogged filter that you can clean yourself in five minutes. Here is a complete diagnosis guide from the simplest fix to the most complex repair.

Miele dishwashers have a self-cleaning filter system that still requires periodic manual cleaning. A clogged filter is the cause of the F11 error in approximately 40% of cases.

How to clean the Miele dishwasher filter:

1. Remove the lower rack.
2. Turn the cylindrical filter counterclockwise and lift it out.
3. Remove the flat mesh filter beneath it.
4. Rinse both filters under warm running water. Use a soft brush to remove stubborn debris.
5. Reinstall the filters and run a short cycle to test.

If the dishwasher drains after cleaning the filter, no further repair is needed. Clean the filter monthly to prevent recurrence.

If the filter is clean but the dishwasher still does not drain, check the drain hose:

1. Pull the dishwasher out slightly and inspect the drain hose at the back.
2. Check for kinks or sharp bends that restrict water flow.
3. Check the connection at the garbage disposal or drain pipe — ensure it is not blocked.
4. If the dishwasher drains into a garbage disposal, run the disposal before starting the dishwasher.

Some Denver homes have an air gap installed on the sink — a small chrome fitting next to the faucet. Air gaps can become clogged with debris, preventing the dishwasher from draining.

Fix: Remove the air gap cap and clean out any debris.

If the filter is clean, the drain hose is clear, and the dishwasher still will not drain, a component has failed.

The drain pump is the most common mechanical cause of Miele dishwasher drainage failure. The pump motor burns out or the impeller becomes jammed with debris.

Signs: The dishwasher is silent during the drain phase (no pump noise), or you can hear the pump humming but water is not moving.

Repair cost: $175–$325.

The capacitor that starts the drain pump motor can fail, preventing the pump from starting even though the motor itself is fine.

Repair cost: $125–$225.

In rare cases, the control board fails to send the drain signal to the pump. The pump tests correctly but does not activate during the drain cycle.

Repair cost: $250–$450.

A piece of broken glass, a bone fragment, or other debris can jam the pump impeller, preventing it from spinning. A technician can access and clear the impeller.

Service cost: $100–$175.

The F11 error on Miele dishwashers specifically indicates a drain fault — the dishwasher attempted to drain but could not complete the drain cycle within the expected time.

F11 error causes in order of likelihood:

1. Clogged filter (check first — free fix)
2. Kinked or blocked drain hose
3. Clogged air gap
4. Blocked pump impeller
5. Drain pump failure
6. Control board failure

We carry common Miele drain pump assemblies and can typically diagnose and repair F11 drain issues in a single visit.

Call (720) 333-0874 for same-day Miele dishwasher repair across Denver metro.