The short answer
A dishwasher that will not drain is telling you the water has nowhere to go. On the BDI line the two ends of that path — the filter at the bottom of the tub and the connection at the sink — are both owner-accessible, and between them they explain most standing-water complaints. Listen for the pump before assuming it has failed. This is a compact family, so the ranking below is drawn from how these particular machines are put together rather than from the brand at large.
What you observe on these models
- Drain works after the filter is cleaned, then fails again in a week — The filter is catching what a partly blocked sump is failing to pass; cleaning treats the symptom each time.
- Cycle stops early and the panel will not clear — Many machines abandon the cycle when the water has not gone, so a drain fault presents as a stalled cycle rather than as standing water.
- Water standing in the sump at the end of every cycle — An inch or so left over the filter, usually cloudy, with dishes that came out mostly clean.
- The machine hums but the water level does not move — The pump is being commanded and is drawing current, so the fault is mechanical rather than electrical.
- NEAR MISS — the tub is empty but dishes are wet — That is a drying complaint, not a drainage one, and it belongs on a different page.
Causes, most likely first on the BDI line
- Blocked filter and sump screen — First, and the cheapest to rule out. This ranks first because it is the only cause that can be confirmed and cured in the same two minutes, with no tools at all.
- Kinked, looped or blocked drain hose — Next most likely on these models. The hose is the part of the path most often damaged during installation or when the machine has been pulled out and pushed back.
- Drain pump impeller jammed — Third — worth checking once the two above are clean. A jammed impeller gives the classic signature — the machine hums for the full drain period and the water level never falls.
Check in this order, and why
- Take the filter out and look at the sump under it — Twist it free, rinse it, and put a hand into the well beneath — most of what blocks a drain is sitting there and comes out with a finger.
- Follow the drain hose from the machine to the waste — Look for a kink behind the cabinet, check it still rises to a high loop, and squeeze along its length for the hard spot that grease leaves.
- Reach the impeller through the sump opening — With the power off, turn the impeller by hand. It should spin freely. A hard stop is an object, and the object is usually visible once the light is right.
Before you open anything
Safety
Switch the machine off at its breaker before a panel comes off or a hand goes into the sump — a capacitor can hold a charge after the power is off. Shut the supply valve under the sink before disturbing a fitting, and never wedge the door interlock to watch a wash run.
Models in the BDI family
Reference| Model number | Family key |
|---|---|
| BDI1410 | beko:dishwasher:bdi |
| BDI1420 | beko:dishwasher:bdi |
When to call a technician
Owner-fixable: anything reached through the tub with the filter out. Service call: a pump that is silent when it should hum, a control that never calls for a drain, or a leak that appears once the drain is cured. Do not run repeated cycles to clear a blockage — it packs the debris tighter and can overheat a pump that is already stalled.
Other problems covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
