The short answer
A drum still full at the end of a cycle on a BFLW model means the machine could not move the water in the time it allows. That is a restriction far more often than it is a dead pump, which is why the filter comes first here rather than the motor.
What you observe
- Water comes back into the drum after it has drained — Siphoning from a drain hose set too low or pushed too far into the standpipe.
- You can hear the pump running but nothing leaves — The pump has power and is turning against a blockage, or its impeller is fouled.
- The cycle ends with water still in the drum — The clearest form of the fault. The machine has finished its timed attempt and given up.
- The standpipe or sink backs up while the machine empties — The restriction is in the house drain rather than in the machine, which is a distinction worth making before any part is bought.
Causes, most likely first
- A blocked pump filter — First on this family and by some distance. The filter is the last thing before the pump, the drum lets everything through to it, and on a compact machine it fills quickly.
- A kinked, trapped or badly routed drain hose — Second. A portable machine gets moved, and the hose behind it gets pushed against a wall or folded over itself.
- A drum packed too full — A packed drum holds water in the load and delivers it to the pump slower than the drain step allows, so the cycle ends with the drum wet and the machine blamed.
- A blocked standpipe or house drain — The machine is healthy and the restriction is downstream. The give-away is another fixture backing up at the same time, and the repair is not an appliance repair at all.
Check in this order
- With the filter open and the machine isolated, turn the impeller by hand — Last of the owner checks.
- Pull the machine out and follow the drain hose end to end — Look for a fold, a crush point behind a foot, and how far the end sits inside the standpipe.
- Retry with a small load and the normal detergent dose — Removes overload and suds from the list without any tool at all.
- Isolate the machine, then open the pump filter with a tray ready — The leading cause on this family, and the only part of the drain path designed for an owner to open.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Never put a finger to a pump impeller on a machine that is still connected, because a held cycle can restart the pump the moment power returns.
Models in the BFLW family — The models this page covers, as the product spine lists them. The table resolves to more than one model stem, so confirm yours in it before assuming a neighbour fix applies.
Reference| Model number | Family key |
|---|---|
| BFLW27MW | black-decker:washer:bflw |
| BFLW45M | black-decker:washer:bflw |
When to call
Call if the machine drains but water returns to the drum afterwards and correcting the hose height has not fixed it, or if the pump runs and nothing moves with a clear filter and a free impeller. Both point past what an owner can reach.
Other faults on 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.
