Last updated on October 12th, 2017
If your washing machine won’t drain water out this article gives advice on how to fix it. If the washing machine has only just been plumbed in and it won’t empty then check this article first – you might not need to drain or pull the washier out – won’t drain after being moved or plumbed in. Otherwise, before trying to repair it you need to manually drain out the water that’s stuck inside.
If your washing machine is stuck full of water because it’s gone dead, or won’t drain after being connected to a different u-bend you need to read the appropriate paragraphs in the how to drain washing machine link above before doing anything else.
What are the main causes of not draining?
If the washer appears to be functioning normally but simply won’t pump away the water these are the most common causes –
- A blockage somewhere
- Something jammed in the pump
- Pump failure
- An electrical fault
Is the water pump running – or not?
On the spin cycle, is the pump running but water isn’t being pumped out? If yes read on. There are two places to check for blockages. If the pump isn’t running then jump to – If the pump isn’t running.
Is the pump making a loud grinding noise?
If the pump is making a loud grinding noise, either constantly or intermittently, there is likely to be something inside being tossed around by the impeller. It’s possible for a pump to have bearing failure but in most cases it will be an obstruction (such as a coin) stuck inside the pump. With the water drained out and pump filter removed it should be possible to see into the pump (where the impeller is) to check for obstructions.
Checking for blockages
Is the drain hose connected to the u-bend under the sink? If so try checking the spigot for blockages. Note that if you cannot hear the pump running don’t bother. A blockage here would not stop the pump running, nor would it make the pump stop making its normal noise.
This is a simple fix, and can be done without moving the washing machine. The drain hose is connected to the u-bend by a plastic spigot pushed into the end of the drain hose. Unscrew the spigot to inspect inside. Also check inside the u-bend where the spigot screws on. A small button, or accumulated bits of stringy threads and lint from laundry can get stuck here. It takes surprisingly little to stop the water being pumped away at this point.
Check for a blocked pump filter
Next you need to check for blockages in the main pump filter if your washing machine has one. Most do. You will need to have drained out as much water as possible before removing the filter. Also, put down large bath towels before removing the pump filter to soak up the water that will inevitably come out.
Taking the filter out
It should be easy to pull the filter out. If unsure check your instruction manual or the pump filter link above. If the filter appears jammed and won’t come out read the advice in the pump filter article. Don’t make the mistake of assuming that anything found in the filter will account for the fault. The pump filter would need to be physically blocked by something like a sock, or a buildup of lint to stop the washing machine from pumping out.
If all you find is a few buttons and coins this will not be the reason your washing machine isn’t pumping the water. Only an object actually jamming the pump impeller or a substantial blockage of the filter would account for not draining.
If you can’t find a blockage
If there are no blockages substantial enough to account for the problem there could still be a blockage – but in less accessible places. It’s probably better to consider finding an appliance engineer. A more obscure blockage could be inside the drum, the sump hose, the pump chamber or even drain hose. This type of blockage would normally also stop water being drained out manually. So if water drained out easily through the drain hose or filter hose it implies there is no physical blockage.
Remember you should only be looking for a blockage if you can hear that the pump is running. If the pump is not running we aren’t suspecting a blockage.
If the pump isn’t running
The most common reason a pump isn’t running is because an obstruction is physically jammed inside it. Check that the impeller turns and it’s not jammed (or broken and loose on the shaft). It may have a little magnetic resistance at one point but it should be at the same point on each revolution.
The impeller should turn fairly easily. It might be possible to hear a gentle hum in place of the normal pump sound although not necessarily. A hum would indicate the pump his electrically OK and is trying to run but is jammed. With water drained out of the washing machine remove the filter and check for obstructions. If no pump filter is fitted the pump may need removing to check. Again it might be wiser to book an appliance repair
Please take a moment to check out my Top 4 safety tips on DIY repair safety advice, which not only covers electrical safety but other tips you may be less aware of too.
Pump isn’t jammed
If the pump is not jammed then it needs testing with a continuity test meter for open circuit resistance across the pump’s terminals. An open circuit pump is clearly faulty and needs replacing. The windings on a standard washing machine pump would normally have a resistance of around 165 Ohms. If it isn’t open circuit or jammed you’d need to investigate if it is getting power and has a neutral return. These are things an engineer should be doing – Find white goods appliance repairs
Buy new pump
If you need to buy a new pump try 4washerhelp spares which is run by the largest UK spares supplier in the UK – Washing machine pumps
More pump troubleshooting
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