ASKO Washer: Will Not Drain
A washer that will not drain has something in the way far more often than it has a failed pump, and the obstruction is almost always in one of three places: the pump filter, the drain hose, or the standpipe the hose empties into. The ordering below is what makes this page worth reading on an Asko washer. These are heavily built machines, so wear-out ranks low and installation, water-path obstructions and load habits rank high. What ranks first here is something you can correct yourself in under an hour, which is the reason to work down the list in order rather than book a visit straight away.
What you are actually seeing
- Check your symptom against this list first.
- Water standing in the drum at the end of the cycle.
- The machine drains slowly and the load comes out soaking rather than damp.
- A drain or pump code in the display, or a cycle that stops before the spin.
- The pump runs audibly but no water leaves the machine.
- Not this fault: If water leaves the machine but the load is still very wet, that is a spin problem, not a drain problem.
Causes, in the order worth checking
- Ranked by how often each turns out to be the answer on an Asko washer.
- Blocked pump filter or coin trap — Why: Every front-loading washer has a filter ahead of the pump that is meant to be cleaned on a schedule, and almost nobody does it. Coins, buttons, hair grips and lint pack it solid. The machine will run a long time, which is exactly why the maintenance items are the ones that catch up with it first.
- Item jammed in the pump impeller — Why: A sock, an underwire or a coin that gets past the filter stops the impeller dead. The pump then buzzes or hums without moving water, which is a distinct sound from a pump that is not running at all.
- Drain hose kinked, too high, or pushed too far into the standpipe — Why: The drain hose has a required height range and a required air gap. Push it too far down the standpipe and the machine siphons; run it too high and the pump cannot lift the water.
- Blocked household drain or standpipe — Why: Lint and detergent scale build up in the standpipe itself, and the machine is then blamed for a plumbing restriction. The give-away is water backing up rather than staying in the drum.
What to check, and in what order
- Each step eliminates the largest branch of the tree for the least effort.
- Open the pump filter at the bottom front of the machine, with a tray and towels ready. — Why: It is the most common cause, it is designed to be owner-serviceable, and it also gives you a look at the impeller.
- Check the drain hose from the machine to the standpipe for kinks and for how far it is inserted. — Why: It is free, and it catches both the siphon fault and the lift-height fault in one look.
- Pour a bucket of water down the standpipe. — Why: It separates an appliance fault from a household plumbing restriction in about a minute.
Checks you can safely do yourself
- Stop at the first step that would put a meter on live terminals.
- Switch the machine off at the outlet and lay towels and a shallow tray under the filter cover at the bottom front. — Tools: Towels, shallow tray
About 10 min
- Open the filter slowly, letting the water out in stages rather than all at once, then remove and clean the filter. — Tools: Towels, tray
About 20 min
- Reach into the pump housing and turn the impeller by hand, removing anything wrapped around it. — Tools: Torch, gloves
About 15 min
- Pull the machine out and run the drain hose from end to end, straightening kinks and checking it is not pushed more than the manual allows into the standpipe. — Tools: Torch, tape measure
About 20 min
Before you touch 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. — Id: unplug-before-service
Unplug the washer before opening the pump filter or any panel; a capacitor in the drive circuit can hold a charge after the power is off. The water in the drum can still be hot after a warm wash — let it cool and release the filter slowly, because a full drum will empty faster than a small tray can hold. Never reach into the pump housing before the machine is unplugged.
Where the owner checks end
Call a technician when one of these is true, and not before.
When the filter, the hose and the standpipe are all clear and the pump is silent during the drain phase. When the impeller is damaged or will not turn freely once cleared. When a drain code returns with a visibly empty drum, which points at the pressure switch.
Sources
General guidance- 29 CFR 1910.147 — The Control of Hazardous Energy — US Occupational Safety and Health Administration, fetched 2026-09-06
Nearest pages of the same kind
What this page does not cover
Links down: - [Common ASKO Washer Problems](/blog/asko-washer-problems)
This page is generalized: it covers the Asko washer line as a whole and does not narrow to a family, a model number or a serial range. The overview at asko-washer-problems routes down to every problem class on this machine, including any family- or model-specific page beneath this one.
Other faults on this machine
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
