You open the door and the drum is half full of grey water. The cycle has stopped, the washing is sodden, and the machine is not going to sort it out on its own. A washing machine that will not drain is stressful, but it is often a blocked filter or a squashed hose rather than a dead pump, and both of those are jobs you can check yourself with a bowl, a towel and a torch.
This guide starts with the symptoms, because what the machine does (silence, humming, an error code, a locked door) narrows down the cause. Then it moves through the fixes from the easiest to the hardest, and ends with the points at which you should stop and get an engineer in.
Read the symptoms first
| What you notice | Likely cause | Check first |
|---|---|---|
| Water sits in the drum, and the pump makes no sound at all | Blocked filter or hose, or the machine is not trying to drain | Filter, then hose, then door lock |
| The pump hums or buzzes but the water does not move | Something is blocking the pump or its outlet | Filter and the housing behind it |
| Grinding, rattling or clicking while draining | A hard object (coin, underwire, hair grip) in the pump impeller | Filter, then torch into the housing |
| The door will not unlock and the cycle has stopped | Water still in the drum, a stuck cycle, or a lock fault | Drain the water, then the door lock and seal |
| Slow drain, gurgling, or water coming up in the kitchen sink | Blockage in the shared household drain or standpipe | The drain pipework, not the machine |
| Water drains as it fills, or never rises | Drain hose too low or pushed too far down the standpipe (siphoning) | Hose height and insertion depth |
| Piles of suds and a stalled cycle | Too much detergent or the wrong type | Dose, then an extra rinse |
| Error code on the display | Varies by brand, often drain-related | Your manual, then the filter |
Most of the first four rows end at the filter or the hose. If more than one fixture in the house is draining slowly, skip ahead to the household drain section.
Before you touch anything
- Unplug the machine at the socket before you open any panel or hose. Water and electrics do not mix, and switching off at the machine is not enough.
- Lay old towels around the base. There can be several litres of water in the drum even when it looks empty from the door.
- Have a shallow container ready to catch the water that comes out when you open the filter or disconnect a hose. The water may be dirty, soapy and, if the cycle was hot, hot.
- If the door is locked, leave the machine unplugged for a few minutes. Many models release the lock when power is removed. If it stays shut, look in the manual for the emergency release, which is often a small cord or tab behind the filter flap. Do not force the door against a full drum.
The fixes, from easiest to hardest
Fix 1: Empty the machine and clear the drain filter
The drain filter catches coins, buttons, hair grips, tissues and lint before they reach the pump, and it is the first place to look. Manufacturers generally advise cleaning it regularly, and your manual will say how often. Our full washing machine filter cleaning guide has the complete walkthrough, and the short version is below.
- Find the small access panel or flap at the bottom front of the machine.
- Lay a towel down with the shallow container in place. Water will run out as soon as the cap loosens.
- If there is a thin emergency drain hose beside the filter, pull it out first, remove its plug and let most of the water run into the container. Refill and empty it as often as you need to, keeping the container lower than the machine.
- Turn the filter cap slowly anticlockwise until it comes free. Do not force it or pull it straight out.
- Remove the debris by hand and rinse the filter under the tap. An old toothbrush shifts stubborn grime.
- Look into the housing behind the filter for anything lodged, then refit the filter and turn it clockwise until it is snug and sealed.
A filter that is not screwed back in fully will leak on the next wash, so check around it with a dry tissue after you restart the machine.
Fix 2: Rule out foam and too much detergent
Using too much detergent, or one not meant for machines, makes a lot of foam, and this can stop the machine sensing water levels correctly. It is common after switching brands or doubling a dose by accident. If the drum is full of suds, run an empty rinse or spin cycle and let it settle. Then follow the dosing on the pack, and adjust for your water hardness and load size, which varies a good deal across the UK.
Fix 3: Check the drain hose and standpipe
If the filter is clear and the machine still will not drain, the hose is next. Lint, detergent scum and limescale build up inside it gradually, especially in hard water areas, and a hose pushed behind the machine can kink or get squashed.
- Pull the machine gently away from the wall, unplugged and with the water supply off.
- Disconnect the hose at the drain outlet or standpipe end, with the container ready.
- Hold it up to a light and look through it for a blockage or a kink.
- Run hot water through it over a sink, or soak the end in a hot vinegar solution if you can see limescale.
- Check how far the hose goes into the standpipe. Many manuals say not to push it in more than about 15 cm, because a hose pushed too far or fitted too low can siphon the water out as it fills, which can look just like a blockage. Follow the height and depth in your own manual.
- Reconnect securely and make sure the hose is not kinked, twisted or crushed behind the machine.
Fix 4: Look for a blocked household drain
Sometimes the machine is fine and the blockage is further along the pipework, particularly where it shares a drain with the kitchen sink, which is common in UK homes. Run hot water down the nearest sink. If that drains slowly too, or you hear gurgling or see water coming up in the sink while the machine empties, the blockage is in the shared pipe.
For a sink-side blockage, clear the trap and use a plunger, as explained in our guide to cleaning a sink drain. If a smell comes with it, see why a drain smells and how to fix it. If it is a shared or underground drain, or you rent, report it rather than digging about yourself. Drain rods and boiling water can damage pipework, so use hot rather than boiling water on plastic pipes.
Fix 5: Door lock or lid switch
Front-loaders may refuse to drain, or even to start a cycle, if the door lock does not register a secure closure. It is a safety feature, but it produces the same result: standing water and a machine that seems stuck.
- Check the door closes with a firm, audible click, not a soft push.
- Inspect the rubber seal for trapped debris, food or small items that stop it closing fully. Our guide to cleaning the rubber seal covers the build-up that commonly causes this.
- Look for visible damage or wear on the lock mechanism. A cracked or loose lock housing usually needs replacing rather than repairing, which is a job for an engineer.
- On top-loaders, confirm the lid sensor triggers properly. Sometimes the lid just needs re-seating.
Fix 6: Something stuck in the pump
Small items can get past the filter and jam in the pump itself. Grinding, rattling or a buzzing pump with no drainage are the signs. With the machine unplugged and the filter out, shine a torch into the housing. If you can see the object and reach it with tweezers or long-nosed pliers without forcing the impeller, take it out. If it is out of reach, stop. Dismantling the pump housing is where DIY turns into risk.
Brand notes and error codes
Error codes differ by brand and even by model, so use this as a pointer and check your own manual for the real meaning.
| Brand | What to know |
|---|---|
| Beko | The manufacturer publishes filter and hose troubleshooting guidance, including how far the drain hose should go into the standpipe. |
| Bosch | Check the filter panel before assuming a pump fault, then the hose. |
| Samsung | Some models show a drain-related code such as 5E. Look it up in the manual before opening any panel. |
| Hotpoint and Indesit | Some models show F05, commonly linked to the drain pump or its circuit. If you see it after checking filter and hose, an engineer is the sensible next step. |
| Hoover and Candy | Start with the filter and hose, as with most brands. |
| Zanussi | Same order of checks: filter, then hose, then the household drain. |
When to stop and call an engineer
If you have been through the filter, foam, hose, household drain and door checks and the machine still will not drain, it is time to call someone. Stop earlier if any of these apply:
- The pump hums or buzzes and nothing moves, even with a clear filter and hose.
- The display shows a pump or control-related code, such as F05 on some Hotpoint and Indesit models.
- There is a burning smell, water around the plug, or the circuit trips.
- You can see the object in the pump but cannot reach it safely.
- The machine is under warranty, an extended care plan or a landlord’s responsibility. Check before you open it up, as DIY repairs can affect cover.
- The lock or door mechanism is damaged.
Ask for the diagnostic fee and a quote before any work starts. Whether a repair is worthwhile depends on the age of the machine, and a replacement drain pump is often a far cheaper job than a new machine. For a drainage problem that has not responded to the checks above, an engineer visit is usually worth it before replacing the washer.
Keeping the drain path clear
A monthly filter check takes minutes, and a proper maintenance wash every few weeks keeps detergent residue and limescale from building up in the drum and pipework. If you also have a musty smell or limescale, our guide to cleaning a washing machine with vinegar and baking soda is worth a read. It is for drum and odour care, though, not for clearing a real drain blockage, and the two problems need different fixes. For a rundown of options, see the best washing machine cleaners UK guide, and for the drum itself, cleaning the washing machine drum. If your dishwasher is struggling as well, see dishwasher not draining.
Three bits of kit for this job
- Washing machine cleaner: an alternative for the preventive side, run as a hot maintenance wash. Pick one that names washing machine drums on the label, follow the directions on the pack and never mix it with other products. It helps with residue and limescale but will not clear a physical blockage.
- LED head torch: an alternative for the awkward part of the job, looking into the filter housing with both hands free. Any simple, lightweight one will do.
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Questions people ask next
How do I force my washing machine to drain?
You cannot safely force the pump, but you can empty the drum by gravity. Unplug the machine, open the filter flap and use the small emergency drain hose if there is one, letting the water out into a low container. Empty it in batches. Then look for the cause.
Can baking soda and vinegar unclog a washing machine drain?
No, not a real blockage. It is a fair choice for drum odour and light limescale, but a trapped object, lint plug or kinked hose needs to be cleared mechanically. Cleaning the filter and hose is what fixes a drainage fault.
Why will my machine not spin as well as drain?
Most machines will not spin until the water has gone, so the two faults usually share a cause. A blocked filter or hose is the most common one. A machine that drains but will not spin points elsewhere, such as an unbalanced load or a door lock problem.
Is it safe to leave water standing in the drum?
Not for long. Standing water goes stale and smelly and the washing will not dry. Drain the drum as soon as you can, and rewash the load if it has sat for a day or more. Never leave a machine plugged in while you work on it.
Can I pour drain unblocker into the washing machine?
Do not, unless the manual says so. Strong chemical unblockers are made for sinks and can damage rubber seals and hoses, and mixing products can release harmful fumes. Our guide on products you should never mix explains why.
How often should I clean the drain filter?
Your manual gives the interval, and manufacturers generally advise doing it regularly, often every few months. Do it more often if you wash pet bedding, children’s clothes with pockets, or items that shed a lot of lint, and always before you suspect a bigger fault.
