Miele tumble-dryer F51 error code
F51 means moisture / conductivity sensing fault. The machine cannot measure residual moisture correctly, so drying stops early or runs too long..
Often fixable at home · Fault type: Electrical/hardware
Safe checks, in order of likelihood
- Clean the fluff filters — lint on the sensing bars causes most F51 reports.
- Run a Normal program with a full load and watch for repeat aborts.
- Power-cycle for 10 minutes.
Call a professional when…
Clean filters; then the moisture sensors or the board input are tested and replaced as needed. If the code returns after these checks, book a qualified engineer.
Parts usually involved
- Miele moisture sensor set.