Why is My Dishwasher Not Draining?

No-one wants to open their machine and discover it hasn’t emptied correctly but, don’t overreact just yet. You could have the means to fix the problem by yourself, without having to call a repair person or purchase a new dishwasher.

Your machine failing to empty may be induced by a number of things a few of which can be simple to solve. Therefore, before you call a dishwasher repair service try this selection of possible issues you may identify yourself. A proportion of which aren’t even caused by the machine itself.

Ensure the cycle wasn’t stopped mid-way

If you’re fortunate the standing water you have discovered may not be a problem at all. Rather, the program could have been stopped mid-way.

The program may have been stopped mid-way for any number of of reasons. Little fingers pushing buttons, inadvertently pushing against the control panel, a power cut or opening the dishwasher mid-program could all interrupt the cycle and mean your machine doesn’t empty.

If you suspect this may be the circumstance, or you just want to be sure it’s not the issue run your machine again on a quick program.

A number dishwashers might have a drain capacity so it’s worth having a look at your instruction manual or checking online to check.

Inspect the waste disposal

If your dishwasher is plumbed into the disposal examine this first as a blocked disposal will block your dishwasher from emptying. Turn on the waste disposal using lots of water to ensure there are no blockages.

If you do find an obstruction drain cleaner or a natural alternative may be used to clear the obstruction and so this could deal with the issue.

Check the plumbing for blockages

If you sink is draining slowly this might signify a plumbing issue as opposed to a fault with your machine.

If the kitchen sink is emptying slowly you can attempt putting a little bicarb and vinegar down the drain, letting it sit for a while and subsequently flushing it away with hot water.

A sink plunger might also be employed to try and shift the blockage.

This might be all you need to do to allow your machine to work again so run a quick cycle at this point. If this hasn’t sorted the issue you may remove the water by hand using a jug and also a towel and troubleshoot a few more possible issues.

Make certain to disconnect the machine to prevent electrocution.

If while you are carrying out one of these examinations you suspect you may have discovered and solved the error there is no need to continue to the next step. Just run an empty cycle to ensure your machine is fixed.

Check and wash the filters

Any number of things could block the filters including popcorn, paper from food jars, film lids and broken glass. Clear film could also be difficult to spot if you aren’t looking for it.

Remove the filter and scrub it thoroughly before putting it back in place. Not all filters are obvious and simple to remove so you might need to consult the manual for this.

Is the drain hose blocked?

The next component to inspect is the drain pipe. Stuck food, a kink in the hose or a crushed hose may all stop your dishwasher from emptying.

Contingent upon the position of the hose (normally the ribbed one) you could have the means to look at it simply by taking off the base alternatively you could be required to pull the machine out from under the counter.

Look at the pipe in the first instance to find out if it has been squashed or kinked. You might be able to manually remove any kinks which will most likely fix the issue, however, it’s worth noting that when this has happened it is significantly more likely to happen again so you could need to order a replacement hose.

If you are unable to find an issue you may remove the waste hose from the machine and blow through it to figure out if there are any blockages. Make sure you put down newspaper or towels before you remove the hose as even if you have emptied the dishwasher there may still be dirty water in the pipe.

If you can’t blow through the waste pipe this may be the issue.

Take off the other end of the hose in order to give it a good clean to clear the blockage. If you can’t shift the blockage or the hose is split or degraded invest in a brand-new one. If you can clear the blockage then put the hose back and run a short cycle to find out if you have solved the issue.

You can also examine where the hose connects under your sink as well. This is a likely point for a build-up of gunk so if you do take off the waste hose give this area a good scrub as well.

Inspect the drain valve

You could manually inspect the drain valve to check it isn’t stopped working. The drain valve will usually be located in the bottom of the dishwasher on the valve bracket. Check your instruction manual if you’re unsure.

Depressing the valve or giving it a wiggle should be sufficient to let you know if it’s stuck. If you can see an object stopping it from moving remove this. If you can’t, this could be when you should call a plumber unless you are confident in procuring and replacing the valve on your own.

Inspect your pump is not broken

Your dishwasher pump makes use of impellers that can get obstructed by broken glass or other debris. Check your impellers aren’t broken by removing the cover and ensuring that the impellers are free to move.

Run your machine and listen for any unusual noises

If your dishwasher doesn’t sound normal your dishwasher pump or motor may be broken and need replacing.

Call a repair person

If you have been through the above list and the fault remains, or you think the pump, pump valve or motor are not working, it might be a good time to get the professionals.

This way though you will at least be able to give them more information and have avoided having to pay a hefty call-out charge for a clogged filter.

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