Daniel Mitchell Key Takeaways
- A tripped leak protection system is the appliance preventing a flood, not a breakdown.
- The float sits in a tray under the machine and lifts when water escapes anywhere inside it.
- Resetting and rerunning is the expensive mistake — the water is still there and the next cycle adds to it.
- Water at the front of the floor points at the door seal; water underneath with a dry front points at the sump.
- An outside leak under the sink can wet the tray and trip the system with nothing wrong inside the machine.
The Bottom Line
Close the tap, switch the machine off at the wall, and find what leaked before clearing anything. The base tray has to be dry before the machine can run again safely.
Miele dishwashers carry a leak protection system, and when it acts the machine stops dead and refuses to run. Owners meet it as a fault code and treat it as a breakdown. It is the opposite: the system has just prevented a flood, and the right response is to find out what it detected rather than to reset it and carry on.
| What you see | What the system did | What to do |
|---|---|---|
| Machine dead mid-cycle, water inside | Float in the base tray lifted | Find the leak before resetting |
| Fault returns immediately after reset | Water still in the base tray | Dry the tray, then diagnose |
| Water on the floor at the front | Door seal, or an overfill | Stop using it |
| Inlet hose warm or bulging | Hose or valve fault | Close the tap now |
| Fault after a genuine spill nearby | Tray got wet from outside | Dry it and restart |
What the System Is Watching
There is a shallow tray under the machine with a float in it. Any water escaping inside the appliance — from a hose, a seal, the sump, or an overfill — collects there rather than running onto your floor. When the float lifts, the control shuts the inlet valve, runs the drain pump, and stops.
That is why the machine is dead and full at the same time: it deliberately stopped the cycle. On models with the full system, the inlet hose carries its own valve at the tap end, so a burst hose is closed off at the source rather than at the machine.
🔴 Do Not Reset and Rerun
The single most expensive mistake here is cutting power, seeing the fault clear, and starting another cycle. The float is still up because the water is still there, and the second cycle adds more.
Instead: close the water tap, switch the machine off at the wall, and get the base tray dry before anything else. On most models the machine has to be pulled out to do that properly, which is a reasonable point to get a technician involved.
Finding What Leaked
- Door seal. Water at the front of the floor rather than underneath usually means the door gasket, which is a contained repair.
- Inlet hose or valve. A valve that does not close fully overfills the tub slowly. Close the tap if you suspect it.
- Sump and circulation seals. Water underneath with a dry front points here.
- An outside spill. A leaking pipe under the sink can wet the tray and trip the system with nothing wrong inside the machine.
The codes in this family — F13 and F84 among them — are covered in the Miele dishwasher error code archive, and they are worth reading before touching anything.
While You Wait
- Close the water supply tap to the machine.
- Switch it off at the wall — not just at the front panel.
- Mop what you can reach and put a towel under the front.
- Do not run it again "just to see", even once.
The Two-Minute Checks Worth Doing Anyway
Look at the inlet hose where it meets the tap and where it meets the machine: any bulging, stiffness or green corrosion means it should be replaced rather than watched. Know where the shutoff is. And if the machine sits on a wooden floor or above a finished ceiling, a leak detector on the floor beside it costs very little for what it protects.
Getting It Diagnosed
A tripped leak protection system needs the source found, not the code cleared. Our Miele dishwasher repair service covers the door seal, the inlet side and the sump, and emergency repair exists for the cases where water is still appearing.
Diagnostic work starts from $89, with the final price confirmed after the on-site diagnosis and a written estimate before any work begins. Book a visit with the tap closed and the machine off.