Miele · Washing machines
Miele washer F103 code: m-Bus module fault
THE SHORT ANSWER
M-Bus module fault
F103 points to the M-Bus module in Miele washer/washer-dryer support. Miele says this is a technical fault requiring service.
Photograph F103 and record the complete model number for Miele service.
Keep the cabinet closed. Never bypass the lock. Avoid electrical connections if water or damage makes access unsafe.
WORK THROUGH THE BASICS
Safe troubleshooting checks
Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.
Give Miele the code, model and cycle stage. The manufacturer assigns this fault to a technician.
What to noteService receives the exact fault without a guessed replacement part.
THE DETAILS MATTER
Scope & troubleshooting notes
Code context
Keep the module name with the error number when requesting help. A communication-related component name does not establish that a Wi-Fi reset or a new control board will resolve the problem.
YOUR NEXT DECISION
When to stop and get help
Arrange Miele service; repeated restarting is not a documented repair.
THE EVIDENCE
Sources & verification
Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.
- Washer fault F103
Miele USA · Manufacturer support · Checked
Fault meaning and recommended response — Miele washing machines and washer-dryers covered by the cited Miele USA fault guidance. Confirm the exact model before following model-dependent instructions.