The short answer
With a Black+Decker BDW dishwasher the most useful thing you can record is when the water appears, because each source leaks at its own moment: a door seal leaks during the wash, a supply fitting drips whether the machine runs or not, and a sump or hose leaks at the drain. On this family the door and the detergent-cup area lead. Suds on the floor are their own cause and the easiest to cure. Settle the build before the ranking applies: these models divide on a filter that twists out of the tub floor.
What you observe on these models
- A puddle at the front, under the door — Door seal, door alignment or the detergent cup area — the parts that sit above that line.
- A drip that appears only while the machine is filling — The inlet valve or the supply fitting behind the machine.
- A leak timed to the end of the cycle — The drain hose or its connections, which only carry water for part of the cycle.
- Water from the side or the back of the cabinet — Look before pulling the machine out, because moving it hides the evidence.
- NEAR MISS — droplets on the worktop edge at the vent — That is condensation from the drying vent and it is normal on many builds.
Most likely first on this family
- The door seal, the door alignment or the detergent-cup surround — It leads because the door is the only water boundary on the machine that moves, and a gasket that has taken a set leaks in exactly one place every time.
- Over-sudsing from the wrong detergent or too much of it — Ranked immediately after the door because it is the single most common one-off cause, and because it is free to prove and free to fix.
- The drain hose or its connections — Mid-list and easy to place, because it only leaks while the machine drains and leaves the rest of the cycle dry.
- The inlet valve, the supply fitting or the filter connection — This is the leak that does not wait for a cycle, which is why it is ranked here: mains pressure does not stop when the machine does.
- The sump, the pump seal or a tub fitting under the tub floor — Last of the five, because confirming it means getting under the machine and everything above it does not.
The order that finds it fastest
- Dry everything, then run a cycle and watch the clock — Watch from the front with the door closed; do not open a panel to observe.
- Check what detergent has been used — Hand dish soap in the tub foams enormously and pushes water straight past the door.
- Inspect and clean the seal and the door edge — Clean it first — debris on a good seal leaks like a bad one.
- Look at how the door meets the cabinet — A spirit level across the door opening settles it.
- Check under the sink with a torch — This is where a leak that is not at the door usually lives.
Before you open anything
Safety
Power off at the breaker before any panel is removed — unplug it where the plug is reachable, because a capacitor can hold a charge after the power is off. Never wedge or defeat the door latch to watch a cycle run.
Where the owner job ends
Call when the leak is timed to fill or to drain and the connections you can reach are dry, and call at once if water is appearing from the centre underneath the machine. The condition is whether the fix is a clean, a clip or a foot — those are owner work — or a seal, a valve or a pump, which are not.
Other faults covered for the BDW models
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
