Dryer Medium Severity
F11 Miele Error Code

Exhaust Duct Blocked / Restricted Airflow

The F11 error code means your Miele dryer has detected restricted airflow through the exhaust system. The temperature or airflow sensor detects that air is not moving through the machine at the expected rate.

~70%

DIY Fixable

$0-250

Typical Repair Cost

15 min – 1 hr

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

No. Restricted airflow causes overheating, which is a fire risk — especially with lint accumulation. Clean all airflow components before using the dryer.

Can I reset the code?

Yes. Yes — after clearing the blockage. A reset without cleaning the airflow path will just produce F11 again.

When to stop immediately?

Stop if you notice: The dryer is excessively hot to touch, Burning smell.

Symptoms You May Notice

Clothes take much longer to dry

Restricted airflow means moisture cannot be carried away efficiently

Dryer gets excessively hot

Trapped hot air raises internal temperatures

Exterior of machine feels very hot

Heat cannot escape through the normal path

F11 during long cycles

The code appears as the heat buildup progresses

Possible Causes

1

Blocked Lint Filter

A heavily clogged lint filter is the #1 cause (~40%).

DIY Possible
2

Blocked Exhaust Vent (Vented Models)

The vent hose or wall duct is clogged with lint, crushed, or kinked.

DIY Possible
3

Clogged Condenser (Heat Pump/Condenser Models)

The condenser heat exchanger is coated with lint.

DIY Possible
4

Crushed or Long Vent Hose

The vent is too long, has too many bends, or is crushed behind the machine.

DIY Possible
5

Failed Airflow Sensor

The sensor that monitors airflow has failed, giving a false alarm.

Requires Professional

Safe Checks You Can Do

These checks are safe for homeowners. No disassembly required. Do not remove panels or access internal components.
  1. 1

    Clean the Lint Filter

    Remove the lint filter and clean it thoroughly. Check the filter housing for lint buildup.

    Hold the filter up to light — you should see through the mesh clearly.

  2. 2

    Clean the Exhaust Vent (Vented Models)

    Disconnect the vent hose from the machine and from the wall. Check the full length for lint blockages. Clean or replace if clogged.

    A dryer vent brush kit makes this much easier.

    Tools required
  3. 3

    Clean the Condenser (Condenser/Heat Pump Models)

    Open the condenser access panel (usually bottom front). Remove the condenser unit and rinse under running water.

    Do this monthly for optimal performance.

  4. 4

    Check Vent Hose Routing

    Ensure the vent hose is as short and straight as possible. Avoid tight bends, and make sure it is not crushed behind the machine.

    Maximum recommended vent length is typically 3-4 meters.

  5. 5

    Power Reset

    After cleaning, turn off at mains for 5 minutes and run a test cycle.

    If F11 clears and drying is efficient, the blockage was the cause.

When to Call a Professional

Contact a qualified Miele technician if:

  • All airflow paths clean but F11 persists
  • Airflow sensor has failed
  • Internal ductwork blocked
  • Under warranty

Need Professional Help?

Find qualified Miele technicians in your area for proper diagnostics and repair.

Schedule Appointment

More Dryer Error Codes

View all codes →
F78 F72 F69 F66 F40 F46 F36 F34 F16 F15 F14 F09