Miele · Washing machines
Miele washer F3 / F4 code: heater-bank temperature sensor circuit fault
THE SHORT ANSWER
Heater-bank temperature sensor circuit fault
F3 concerns a short circuit in the heater-bank temperature sensor circuit. F4 concerns an open circuit. These are service faults in the Miele washing-machine/washer-dryer guidance.
Photograph F3 / F4 and record the complete model number for Miele service.
F3F4Keep 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
These codes concern the heater-bank sensor circuit. Do not substitute the water-temperature sensor interpretation for F1/F2 or buy a sensor solely because the display names its circuit.
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 F3
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.
- Washer fault F4
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.