The short answer
A BPWM washer that will not empty is nearly always blocked rather than broken. The drain path on a compact machine is short and narrow, so the pump filter and the hose account for most of these faults, and both are reachable without opening the cabinet.
What you observe
- 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.
- You can hear the pump running but nothing leaves — The pump has power and is turning against a blockage, or its impeller is fouled.
- A stale smell from the drum or the filter — Standing water and trapped debris. It usually arrives with a slow drain rather than a sudden one.
- Nothing at all happens at the drain step — No pump sound points past the filter at the pump itself or its supply, which is a different half of the list.
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.
- Debris wrapped around the pump impeller — A hair pin, a wire or a fragment of a garment past the filter will lock or foul the impeller. The tell is a pump you can hear running with nothing leaving.
- Drain height or a hose pushed too far into the standpipe — Set too low or inserted too far, the machine siphons and water returns after it has drained. It looks exactly like a failed pump and it is entirely an installation cause.
Check in this order
- Check the height the drain hose discharges at — Too low and the machine siphons; too high and the pump cannot lift the water within the time the cycle allows.
- Retry with a small load and the normal detergent dose — Removes overload and suds from the list without any tool at all.
- Start a drain or spin and listen for the pump — Running against a blockage and not running at all are two different halves of this list.
- 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.
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 BPWM 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 |
|---|---|
| BPWM09W | black-decker:washer:bpwm |
| BPWM16W | black-decker:washer:bpwm |
| BPWM20W | black-decker:washer:bpwm |
When to call
The line on this family is the pump itself. Opening the filter, clearing the impeller by hand, rerouting the hose and correcting the discharge height are all owner work.
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.
