What F43 actually means
The machine's control board doesn't know which model it is, so it won't run any programme until that information is loaded back in.
Every Miele washing machine's electronics carry a stored model type that tells the board which drum, motor, heater and programme set it is working with. F43 means that data is missing or was never written in, so the control unit has nothing to work from and stops rather than guess. It is not a mechanical fault \u2014 nothing is blocked, leaking or worn out.
What usually causes it
- A replacement control board fitted without the model type being programmed in
- Stored settings lost or corrupted in the control electronics
- Data lost after a service repair or software update on the electronics
- A fault in the memory on the control board itself
What you can safely check yourself
Work through these in order. Anything beyond this — panels off, testing parts, anything to do with the wiring — is an engineer's job, and not one to attempt with the machine plugged in.
- Turn the machine off at the wall socket for a minute, then switch back on \u2014 occasionally clears a one-off glitch
When to call someone
This one usually needs an engineer once you have tried the checks above. We cover Nottinghamshire, Derbyshire and Leicestershire, and it's £66 including VAT for an engineer to come out and diagnose it — £84 in total if it's repaired on the visit with no parts needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.
Outside our area? The explanation above still stands — take it to a local engineer and tell them the code. Knowing it saves them time and you money.
Other Miele washing machine codes
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- Miele F63 — The machine has lost control of the part that directs incomi…
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