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CVA 7845 DirectWater: Fault F307 — clean milk valve

CVA 7845 DirectWater: F307 points to residue around the removable milk valve components named in the maintenance procedure. Let the machine cool, remove and clean only the milk-valve cover and silicone components shown in the manual, refit them dry and run the milk-pipework rinse.

Manufacturer sources consulted

Models covered

Preserve the exact words, code, timing and drink before changing anything: a similar symptom can have a different cause. Perform the documented check once, then use the result to decide between a resolved user condition and authorised service. Do not order a pump, grinder, valve, heater or control board from this symptom alone.

Before checking Miele CVA 7845 DirectWater

  • Keep hands clear of hot water, steam, the grinder and moving brew mechanisms. Switch off and unplug before removing a user-removable unit, and never open an electrical, boiler, pump or grinder cover.

What this symptom can mean on Miele CVA 7845 DirectWater

What the display or symptom meansF307 points to residue around the removable milk valve components named in the maintenance procedure.
What it does not proveThe display or symptom does not by itself identify an internal replacement part. Water, coffee, milk, heat and electrical paths must remain separate diagnoses.

4 checks for Miele CVA 7845 DirectWater, starting with Preserve the exact evidence

  1. Preserve the exact evidence

    Photograph or write down “Fault F307 — clean milk valve”, the selected drink and what happened immediately before it.

  2. Make the machine safe

    Keep hands clear of hot water, steam, the grinder and moving brew mechanisms. Switch off and unplug before removing a user-removable unit, and never open an electrical, boiler, pump or grinder cover.

  3. Apply the manufacturer’s user check

    Let the machine cool, remove and clean only the milk-valve cover and silicone components shown in the manual, refit them dry and run the milk-pipework rinse.

  4. Decide after one controlled test

    If the exact symptom clears, observe one normal drink. If it returns, keep the evidence and contact the manufacturer rather than repeating resets or guessing a part.

When to stop checking Miele CVA 7845 DirectWater

  • Stop immediately for a hot plug, damaged cable, burning smell, smoke, uncontrolled heating, water near electrical parts, a forcefully moving portafilter or any exact fault that returns after the one documented check.

Next step

After checking Miele CVA 7845 DirectWater: repair, part or service?

Treat “CVA 7845 DirectWater: Fault F307 — clean milk valve” as a condition to verify. The first of the 4 documented checks is “Preserve the exact evidence”; its result guides what follows.

Finish the checks before buying

Complete the Miele CVA 7845 DirectWater sequence, starting at “Preserve the exact evidence”. When the symptom clears without a remaining alert, no replacement is indicated.

Arrange a diagnosis if a stop condition appears

Do not condemn Miele CVA 7845 DirectWater from “CVA 7845 DirectWater: Fault F307 — clean milk valve” alone. Stop at the warnings above and let a qualified diagnosis establish whether repair remains safe and proportionate.

Sources used

  • Miele — Miele's official material documents “Fault F307 — clean milk valve” or the exact symptom and the bounded user procedure retained here.
  • Miele · source in French — Miele's official material documents “Fault F307 — clean milk valve” or the exact symptom and the bounded user procedure retained here.

Last checked: 30 August 2026