Miele dishwasher F70 error code
What F70 means on a Miele dishwasher
Anti-flood protection activated: water detected in the base.
Meaning checked by NAC's engineers, 9 November 2026.
What our engineers say
When your Miele dishwasher shows F70, it means the anti-flood protection has been activated because water has been detected in the base of the machine. You may also notice the pump running constantly, beeping or flashing lights, water on the floor, or the dishwasher stopping partway through a cycle.
Engineers sometimes find that the valve which lets water into the machine has a worn or damaged seal and leaks as it fills. Sometimes the lower door seal has split or torn, or the pump that moves water around during a wash is leaking or has worked loose. Now and then the cause is a damaged drain hose, a small blockage in a valve that stops water flowing back, or the safety switch that senses water in the base failing even though the base is dry. Occasionally the water is cleared and no further leak can be found.
An engineer will usually remove the water from the base, reset the machine and run it while watching closely for where the water escapes. They then replace or refit whichever part is leaking, such as a valve, seal, hose or pump, and test the dishwasher on a wash. Replacement parts often need to be ordered and fitted at a second visit.
Written by our engineers from NAC's own jobs.
Faults this code turns up with
What our engineers found and fixed for each, from NAC's own repair records, with Miele's own figures where we have enough of them.
- Dishwasher beeping or flashing lights All brands
- Dishwasher water in base All brands
- Dishwasher pump running constantly All brands
- Dishwasher leaking All brands
- Dishwasher water supply warning showing All brands
- Dishwasher stopping mid cycle All brands
- Dishwasher not draining Miele figures
- Dishwasher tripping the electrics All brands
- Dishwasher not starting All brands
- Dishwasher noisy All brands
What we fixed. We'll add what our engineers found, the parts they fitted and what customers typically paid once enough of these repairs are confirmed. How we work out our figures.
Before you check anything yourself
- Switch the dishwasher off and unplug it, or turn it off at the isolator switch, before you touch anything. Our guide to safely isolating an appliance walks you through it.
- An error code tells you where to look, not that it's safe to take the dishwasher apart. Don't remove panels or covers to get at the parts it points to: that's an engineer's job.
- If it involves the mains supply, sealed parts, or you're not confident at any point, stop and book a qualified engineer rather than risk injury or further damage.
Rather leave it to us?
- Fixed-price quote before any work starts
- Same or next-day visits where available
- UK-wide engineer coverage