How to Diagnose Washing Machine Drain and Pump Problems

Hi I’m Josh from And In this article at I’m going to be addressing drain and pump problems in your washing machine. The most common drain problem that washing machines develop is that they simply won’t drain at all.

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And this is usually due to a foreign object in the wash load that has found its way through the machine and got stuck in the sump hose and blocked the pump. To give you a better idea of what’s going on I’m just going to put the machine down onto its side so we can have a look inside.

This is the under side of the machine here‘s the pump assembly and this is the sumphose.
Now before the object has had a chance to get into the pump most machines and made with a filter or trap. And you can’t get to this by just undoing the cover on the front to the machine and unscrewing the filter. And that’s designed to catch whatever object has made its way through the wash load and before it gets to the pump.

It may be the case on your machine the filter is similar to this one where the front of it is attached to the body.
the door seal and
And that means that if you do get an object caught in there you can’t actually unscrew the filter because it catches on the sides. Now if that’s the case you need to get access to the pump assembly or the sump hose and remove either one of them in order to remove the object from the filter. If the machine is draining slowly it could be due to a partial blockage and that could be from debris or a small item of clothing. Obviously the first place you need to check is the filter and one seat at the filter is clear just have a feel along the sump hose for anything that might be blocking it.

And obviously if you do find something you need to disconnect the sump hose and remove the blockage. It could also be draining slowly because the pump has burnt out or what tends to happen sometimes is this something gets wrapped around the pump impeller such as a piece of plastic or an elastic band. In which case you need to remove that before putting the pump back in. Now this machine is equipped with two pumps.

A recirculation pump, and a drainage pump.

found its way through

So if you getting strange noises during the wash cycle it’s more likely to be a problem with the recirculation pump. If the noise is happening during the drainage, that could be an issue with the drainage pump. If you’ve checked all of these areas for blockages and he still can’t find anything and if your machine is connected to a spigot underneath the kitchen sink. Then it could be that the sink itself is blocked with something like fat.

To check this just disconnect the drain hose from the spigots and try emptying the machine into a bucket. If the water doesn’t come out of the hose then obviously you need to clear your kitchen sink and before reconnecting the drain hose. Now a question we often get asked is how to drain a machine if it’s stopped while it’s full of water?.

There are a few things you can try if you go to the cover on the front of the filter and just pop that open. Many machines contain a small drainage hose which can then be used to empty the water into a shallow bowl or bucket.

stopped while it

Another thing you can try is to lean the machine backwards so that the water level inside is lower than the door seal and then just open the door and ladle the water out. Or something else to try is to take the drainage hose and lower it to the floor so it’s lower than the water level in the drum and that should enable the water to just run out.

Spares for washing machines and other appliances are available on the website. Thanks for reading