What F08 actually means
The machine can't confirm the door is locked shut, so it won't start or fill.
On Bosch-built machines (Neff, Bosch and Siemens share the same control platform) F08 sits in the same family as E01, F16 and F34 \u2014 all door interlock faults. The control board sends power to the interlock and waits for the lock to report back that the door is secured; if that confirmation doesn't arrive, the cycle is abandoned before water is taken on. You'll usually see it within the first few seconds of pressing Start, sometimes with the door still releasable.
What usually causes it
- Worn or failed door interlock ","Door not pushed fully home, so the catch never engages
- Laundry or a stray sock trapped in the door seal, holding the door proud
- Damaged or sagging door hook or hinge
- Wiring or connection fault at the lock
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.
- Open the door, push it firmly closed and listen for the click of the catch, then try again
- Check nothing is caught in the seal or hanging over the door edge
- Switch off at the wall for a minute, then power up and restart a short programme
- Look at the door hook ","if it is loose or the door drops when open, the catch won't line up
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.