Miele F43 washing machine: what it means & what to check

Stop using it for now. Carrying on with this fault risks further damage or a leak. Switch it off at the wall until it has been looked at.

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 F43 looks like on a Miele washing machine

Most people find this page having searched for what the machine is doing rather than the code itself. On a Miele washing machine, F43 usually shows up as one or more of these:

Not heating the water
Washing coming out cold
Cycle takes far longer than it should
Drum not turning
Won't spin
Hums or buzzes but nothing moves
Turns one way only
Leaking

Recognise any of those? That is this fault, and the rest of this page explains what causes it and what you can check yourself.

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

Common questions about Miele F43

What does F43 mean on a Miele washing machine?

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.

Can I fix Miele F43 myself?

There are 1 check you can safely do yourself first.

Turn the machine off at the wall socket for a minute, then switch back on \u2014 occasionally clears a one-off glitch.

This one usually needs an engineer once you have tried them.

How much does it cost to repair Miele F43?

£66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Tried the checks and it's still showing F43?

This one usually needs an engineer once you have tried the checks above. Then it wants someone who can open it up.

What it costs, before you call: the price is the same whatever the fault turns out to be — £66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Our own engineers, not a call centre. We cover Nottinghamshire, Derbyshire and Leicestershire — most washing machine faults are seen same day or next day.

Call 0115 648 0929 Book online — postcode and number is all we need

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

All Miele fault codes and repairs →

What this looks like when it happens

Repairs we cover near you

Written by the engineers at ASAP Repairs, 0115 648 0929. We repair these machines for a living in Nottinghamshire, Derbyshire and Leicestershire.

Miele F43 error — washing machine