Coffee Machine Low Severity
F4 Miele Error Code

Drip Tray Full

The F4 error code means the drip tray float sensor has detected that the drip tray is full or nearly full of water.

~95%

DIY Fixable

$0-100

Typical Repair Cost

2 min – 15 min

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

Yes. Simply empty the tray and reseat it. The machine is fully safe.

Can I reset the code?

Yes. Yes — empty, clean, reseat.

When to stop immediately?

Stop if you notice: Float mechanism is broken, F4 persists after emptying and reseating.

Symptoms You May Notice

Empty drip tray message

Display prompts to empty the tray

Machine pauses

Cannot continue until tray is emptied

F4 on display

Simple maintenance alert

Possible Causes

1

Drip Tray Full

Normal accumulation — needs to be emptied.

DIY Possible
2

Float Stuck

The tray float is stuck in the full position.

DIY Possible
3

Tray Not Seated

The tray is not pushed in fully, triggering the sensor.

DIY Possible
4

Sensor Fault

The float sensor has failed.

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

    Empty the Drip Tray

    Remove the drip tray, empty it, and wipe it clean.

    Empty daily with regular use.

  2. 2

    Clean the Float

    Check the small float in the tray. Rinse and ensure it moves freely.

    Coffee residue can stick the float in the up position.

  3. 3

    Reseat the Tray

    Push the tray firmly back until it stops.

    A partially inserted tray may not register as empty.

  4. 4

    Power Reset

    Turn off and on if the message persists after emptying.

    The sensor resets when the tray is properly reseated.

When to Call a Professional

Contact a qualified Miele technician if:

  • Float sensor failed
  • Under warranty

Need Professional Help?

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

Schedule Appointment