What F104 means (miele f104 error)
A miele f104 error is the Miele washer service fault code for low drive voltage — the motor-drive electronics are seeing a supply or internal voltage below what is needed, so the washer cannot drive the drum reliably. It points to the supply or the drive stage.
Symptoms to look for
The signs below help confirm you are dealing with this condition rather than a different fault on your Miele Washer. You may see one of them or several together, and they can build up gradually or appear suddenly after a power event, a long door opening, a spill, or recent service.
- F104 appears during tumble or spin
- The drum runs weakly or stops
- The fault may follow a brownout or shared circuit
- The cycle aborts mid-program
Common causes
Several different faults can produce these symptoms. Working through the most likely causes in order helps separate a quick, owner-level check from a problem that needs trained service and the correct Miele parts.
- Low or unstable supply — a brownout or overloaded circuit
- Power-supply fault — the internal supply stage is failing
- Motor-drive fault — the drive electronics underperform
- Wiring fault — a degraded power connection
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where high-voltage parts, gas, the sealed refrigeration system, or a heat-pump compressor are involved, and hand the rest to a qualified technician.
- Confirm the washer is on its own correctly rated circuit, not an extension lead.
- Power off at the wall for several minutes, then restore.
- Note whether the fault coincides with other heavy appliances running.
- If F104 persists, book service to test the drive and supply.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the motor drive electronics, power supply, wiring, and control board. The correct part for your Miele Washer is matched from the model and serial number, and genuine Miele components are fitted through trusted parts suppliers rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.
When to call a technician
F104 needs a technician to test the motor-drive electronics and power supply and confirm the household circuit. When the fix calls for trained service, book a visit through our scheduling page and an experienced, qualified technician will diagnose and repair it.
Prevention and care
Regular care keeps this condition from returning on your Miele Washer. Keep filters, vents, seals, and the condenser, exhaust, or burner path clean, avoid overloading or blocking airflow, check that doors and seals close cleanly, and follow the Miele maintenance guidance for your model. Because this unit relies on electronic control, protect it with a stable, correctly rated power supply and have any built-in or laundry installation done to Miele specification so the control never sees an out-of-range condition. If a code appears, note exactly what was shown before you reset the appliance — that record helps the technician reach an accurate diagnosis and avoid replacing parts unnecessarily.
Related help and Miele resources
Browse other Miele Washer diagnostics, read about Miele Washer repair, look up your unit in the Miele models reference, or the related F100 communication fault, or schedule a service visit. For Miele manufacturer documentation and model lookup, visit the manufacturer at mieleusa.com.
If the condition persists after the owner checks above, an experienced Miele technician can read the full fault history, test each named component against specification, and fit genuine Miele parts so the washer returns to its proper performance. Most visits resolve the issue in a single trip, and the work is backed by a 30-day labor warranty on the workmanship.
