Written by
Maya Chen Appliance Repair Content SpecialistPublished October 20, 2026
Content statusVerified
Error codeF15
ApplianceWasher
Quick answer
F15 on a Miele washer or washer-dryer means the hot water inlet is blocked or restricted. The manual lists three checks.
Model compatibility
Miele reuses codes across series and model years, so F15 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What thiscode means
F15 means the water inlet is blocked or restricted on the hot water side.
A Miele washing machine or washer-dryer showing F15 has a blocked or restricted water inlet, and the manual puts the problem on the hot water side.
Hot water stopcock
If it has not been opened, terminate the wash programme, open the hot water stopcock, then select the programme and start it again.
Hot water inlet filter
The second cause is a dirty filter. Cleaning it goes like this:
Close the hot water stopcock.
Detach the inlet hose from the stopcock.
Take the rubber seal (1) out of its recess.
Tip the open hose end downward and let the plastic filter (2) slide out.
Clean the filter. It must go back in afterwards.
Refit the parts in the opposite order, reopen the stopcock and look for leaks at the connection; tighten it if it drips.
Water pressure
Fully open, the hot water stopcock should deliver 5 l or more in 15 s. A weaker flow means asking the facility manager or a plumber. Where the supply pipe pressure is too low and cannot be raised, the manual names Miele Customer Service.
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
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