F28 and Clean brew unit by hand point to excess ground coffee or a blocked grinder channel on a Miele coffee machine.
Model compatibility
Miele reuses codes across series and model years, so F28, Clean brew unit by hand may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What thiscode means
F28 is an excess ground coffee or blocked grinder channel message.
Two causes sit behind F28 and Clean brew unit by hand on a Miele coffee machine, and Miele treats each one separately.
At a glance
Code
F28, Clean brew unit by hand
What it means
F28 is an excess ground coffee or blocked grinder channel message.
What you can check
Switch the machine off, wait 2 minutes, then switch on, and use only one portion of pre-ground coffee per drink. Vacuuming the ground coffee chute once a year clears blockages.
When to call a technician
Book a service visit if F28 persists after the restart and the chute has been vacuumed.
Cause one: excess ground coffee
An overfilled ground coffee chute stops the brew unit from working and sends the coffee to the grounds container. Turn the machine off at the On/Off switch and leave it 2 minutes before switching on again. Then use only one portion per drink when brewing from pre-ground coffee.
Model
Supplied scoop amount
CM 7xxx
2 level scoops
CM 6xxx, CVA xxxx
1 level scoop
CM 5xxx
12 g of ground coffee (no scoop)
Cause two: blocked grinder channel
Residue is cleared by vacuuming the ground coffee chute once a year. Take out the ground coffee drawer after opening the door, push in the vacuum attachment, vacuum with the suction tube, then replace the drawer and shut the door.
See also
Another brew-related message is F73, and a spout-related one is F307, a clogged milk valve.
Repair for Miele coffee machines in Miami, New York, Houston, Los Angeles and San Diego
If the fault persists, Miele recommends customer service or an online repair booking. In the Miami, New York, Houston, Los Angeles and San Diego metro areas, call (844) 459-5005 for Miele coffee machine service and state the code and model.
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Get started
Seeing this code on your Miele appliance?
Book a specialist Miele service visit for a clear estimate and approval before any repair. Experienced technicians, clear diagnostics, and workmanship coverage on completed repairs.
