The short answer
On a Black+Decker washer, water returning is a siphon or a sink problem far more often than a valve fault. Re-routing the hose is free and fixes most of these outright.
What you actually see
- Water drains very slowly rather than not at all — Slow is a restriction; none at all is a blockage or a pump that is not running.
- The drain hose backs up into the sink — Water returning is a hose height or a sink drainage problem rather than a washer fault.
- The machine drains but will not spin afterwards — A machine that drains and refuses to spin is a balance or lid-switch question.
Causes, ranked for this washer
- Sink or standpipe draining too slowly — Most likely — a portable machine empties fast, and a partly blocked sink cannot take it — the water then backs up and the machine appears not to drain. A clean result here does not just remove one part; it removes everything that depends on it.
- Drain hose kinked, too high or pushed too far into the sink — Common — a hose pushed too far into a drain siphons or airlocks, and one lifted too high asks the pump for more than it can give. It is worth being sure about this one rather than half-sure, since everything after it assumes a verdict.
- Drain hose blocked internally — Regular — lint and detergent residue build inside a drain hose over years, and a small-bore portable hose narrows sooner than a full-size one. This is the entry most often blamed correctly and diagnosed carelessly, so take the extra minute.
What to check, in order
- First — where the hose empties — Watch the sink during the drain step. Water rising in the basin is a sink problem rather than a machine one.
- Second — the drain hose route — Follow the hose from the machine to its outlet and straighten every kink. Check it is hooked over the sink rather than pushed deep into the drain.
Checks an owner can do safely
- Step 1. Clean the pump filter — Close the supply, put a shallow tray and towels under the filter cover, open it slowly and clear everything out before rinsing the filter.
Tools: shallow tray, towelsAbout 25 min
- Step 2. Flush the drain hose — Disconnect it at both ends over a bucket and run water through it. Poor flow through a disconnected hose is conclusive.
Tools: bucketAbout 20 min
- Step 3. Bail the drum before restarting — Scoop out standing water before running another cycle, so the machine starts from a known state rather than fighting a full drum.
Tools: jug, towelsAbout 15 min
Before you open anything
Safety
Two isolations, not one: power at the plug or breaker, water at the supply valve. A capacitor can hold a charge after the power is off. Standing water under an energized appliance is an electrical hazard first and a plumbing problem second.
When this becomes a service call
Where the owner side ends is easy to state. A pump that strains against something you cannot reach through the filter housing needs the machine opened, which is where owner work ends.
Sources
General guidance- The Control of Hazardous Energy (Lockout/Tagout) — OSHA 1910.147 and manufacturer service manuals, fetched
Nearest pages
What this page does not cover
This page is written for Black+Decker washers in general. It does not cover a specific family, a specific model number or a control board revision, and where a family or model page exists it will be more precise than this one — start here to understand the fault, then follow the more specific page for the part numbers and the board layout. The nearest pages of that kind are linked under Related pages.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
