Why is My Dishwasher Not Draining?

No-one is happy to open their dishwasher and discover standing water but, try not to lose it just yet. You might be able to rectify the fault by yourself, without having to call a repair person or purchase a brand-new dishwasher.

Standing water in your machine may be induced by a number of issues a proportion of which are simple to solve. Therefore, before you call a dishwasher repair service try this lineup of potential components you may troubleshoot yourself. A number of which aren’t even caused by the dishwasher itself.

Ensure the dishwasher wasn’t interrupted mid-program

If you’re lucky the standing water you have discovered may not be a fault at all. Instead, the cycle might have been cut short.

The cycle might have been stopped mid-way for multiple of reasons. Children pushing buttons, mistakenly leaning against the control panel, a power outage or opening the dishwasher mid-program might all stop the cycle from completing and mean your machine doesn’t empty.

If you suspect this could be the situation, or you think it could be a good idea to check start your machine again on a quick program.

A proportion dishwashers may have an empty function so it’s worth consulting your owners manual or consulting google to find out.

Check the waste disposal

If your dishwasher is connected to your waste disposal check this first as an obstructed garbage disposal will block the dishwasher from draining. Run the waste disposal using lots of water to check there are no issues.

If you do discover a blockage drain cleaner or a natural alternative can be used to unclog the obstruction and so this could resolve the problem.

Inspect the sink for issues

If you sink is draining inefficiently this may signify a plumbing issue as opposed to an issue with your machine.

If the sink is draining reluctantly you may try putting a little bicarb and vinegar down the plughole, letting it sit for a while and then flushing it away with boiling water.

A sink plunger could also be used to attempt to shift the obstruction.

This could be enough to permit your machine to empty so run a short program at this point. If not you may manually get rid of the standing water using a cup as well as a sponge and troubleshoot a few more areas.

At this point make certain to disconnect the machine to avoid electrocution.

If during any one of these investigations you think you may have detected and fixed the issue there is no need to continue to the next step. Just complete an empty program to check your dishwasher is now emptying as it should.

Check and clean the filters

Any number of things could block the filters including popcorn, labels from tupperware, plastic covers and smashed glass. Clear plastic lids can also be hard to spot if you aren’t looking for it.

Take out the filter then give it a good scrub before replacing it. Not all filters are obvious and simple to remove so you might need to look at the owners manual for this.

Is the waste hose blocked?

The next area to inspect is the drain pipe. Many things could cause a blockage including a build up of food debris, a kink in the hose, or a crushed hose. All of which could all prevent your dishwasher from emptying.

Depending on the location of the hose (generally the ribbed one) you might manage look at it by means of lifting away the base or you might have to move the machine out from the wall.

Have a look at the hose first to discover if there are any kinks or it’s been squashed. You may have the means to manually remove any kinks which will most likely deal with the issue, but it’s worth noting that once this has happened it is much more inclined to happen again so you might wish to purchase a replacement hose.

If you can’t see an issue you can disconnect the waste pipe from the dishwasher and blow into it to figure out if there are any blockages. Make sure you put down newspaper or towels before you remove the hose as there may still be water in the hose.

If you can’t blow air through the hose this may be the problem.

Remove the other end of the hose and give it a thorough flush through to get rid of the blockage. If you are unable to remove the blockage or the pipe is split or worn buy a new one. If you can get rid of the blockage then put the hose back and run a short cycle to make sure you have solved the fault.

You may also inspect the point where the pipe attaches to the sink. This is a likely spot for blockages to occur so if you happen to take off the waste pipe give this area a good clean as well.

Examine the drain valve

You can manually check the drain valve to check it hasn’t stopped working. The drain valve will usually be found at the base of the machine on the valve bracket. Examine your owners manual if you can’t see it.

Pressing down on the valve or wiggling it a bit should be enough to tell you if it’s seized. If you can see anything blocking it get rid of this. If you can’t, this might be the right time to get in touch with a repair person unless you are happy in ordering and replacing the valve on your own.

Examine your pump is not broken

Your water pump makes use of impellers that may be blocked by pieces of glass or other objects. Check your pump isn’t obstructed by taking off the cover and checking that the impellers can be easily rotated.

Run your dishwasher and listen for any unusual sounds

If the dishwasher is making funny noises your pump or motor may be broken and need to be repaired.

Call a plumber

If none of the above checks has repaired the problem, or you think the pump, pump valve or motor are not working, it may be the moment you need to call in the professionals.

At least having attempted to troubleshoot you have prevented needing to pay a hefty repair charge for a blocked hose.

More Dishwasher Problems:

CLICK-TO-CALL