Why is My Dishwasher Not Draining?

Although it’s always irritating to open your machine and discover it hasn’t drained fully, try not to overreact just yet. You may manage figure out the error by yourself, without having to call a plumber or buy a new dishwasher.

Your machine declining to empty may be caused by any number of issues some of which are simple to figure out. Therefore, in advance of calling a dishwasher repair service try this list of probable components you could identify yourself. Some of which are not even caused by the dishwasher itself.

Ensure the program wasn’t interrupted

It is probable that there is nothing preventing your machine from draining. Rather, the cycle may have been cut short.

The program could have been cut short for multiple of reasons. Kids pushing buttons, mistakenly leaning on the control panel, a power cut or opening the dishwasher mid-cycle might all interrupt the cycle and mean your machine doesn’t drain.

If you think this may be the situation, or you just want to be sure it’s not the issue start your machine again on a quick cycle.

Some machines could have a drain function meaning it’s well worth consulting your owners manual or doing a quick internet search to find out.

Examine the waste disposal

If you have a waste disposal inspect this before you move on as a blocked disposal will block the dishwasher from emptying. Turn on the waste disposal using fast running water to make sure there are no issues.

If you do uncover an issue drain cleaner or a natural alternative could be employed to unclog the obstruction and so this might resolve the issue.

Inspect the sink waste for issues

If you sink is emptying reluctantly this might suggest an issue with the drains as opposed to a problem with your machine.

If the kitchen sink is draining inefficiently you could attempt putting a little bicarbonate of soda and vinegar down the plughole, letting it sit for a while and then flushing it away with boiling water.

A plunger may also be utilized to try and shift the blockage.

This might be sufficient to permit your appliance to drain so start a quick cycle to check. If not you may remove the standing water by hand using a cup and also a towel and check a few more areas.

At this point make certain to unplug the machine to stay safe.

If while you are carrying out one of these investigations you suspect you have found and solved the fault there is no need to continue to the next step. Just complete an empty program to check your dishwasher is fixed.

Examine and scrub the filters

Corn Kernels, labels from containers, plastic film covers and broken glass, as well as food debris, can all block the machine filter. Clear film could also be hard to see if you aren’t looking for it.

Remove the filter and give it a thorough wash before putting it back in place. Not all filters are obvious and straightforward to remove so you might need to look at the instruction manual for this.

Is the drain hose obstructed?

The next component to check 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 can all prevent your machine from draining.

Contingent upon the location of the waste pipe (generally the corrugated one) you could be able to inspect it by taking off the kick board or you could be required to pull the dishwasher out from the wall.

Visually examine the pipe in the first instance to see if there are any kinks or it’s been squashed. You may manage manually straighten out any kinks which will most likely fix the issue, but it’s worth noting that once this has occurred the probability of it happening again is greatly increased so you could wish to buy a new hose.

If you are unable to see any obvious kinks or obstructions you can take off the waste pipe from the machine and blow into it to discover any blockages. Be sure to put down newspaper or towels first as there could still be water in the pipe.

If you are unable to blow air through the waste hose this could be the issue.

Remove the hose at the sink end and give it a thorough flush through to clear the obstruction. If you can’t get rid of the blockage or the waste hose is cracked or worn buy a brand-new one. If you could get rid of the blockage then put the hose back and start a quick cycle to find out if you have fixed the issue.

You can also check the point where the pipe attaches under your sink. This is a common point for blockages to occur so if you happen to take off the waste hose give this point a good scrub as well.

Check the drain valve

You could manually examine the drain valve to check it hasn’t seized. The drain valve will usually be found in the bottom of the machine on the valve bracket. Consult your owners manual if you can’t see it.

Depressing the valve or wiggling it a bit should be enough to let you know if it’s stuck. If you can see any debris blocking it carefully extract this. If you are unable to, this may be when you should get in touch with a plumber unless you are happy in purchasing and swapping out the valve yourself.

Inspect your pump is not broken

Your water pump uses impellers that may get obstructed by broken china or other debris. Check your impellers aren’t obstructed by removing the safety cover and making sure the impellers can rotate freely.

Listen to your dishwasher while it’s on

If it is making funny noises your pump or motor might be faulty and need replacing.

Call a plumber

If you have been through the above list and the problem persists, or you think the pump, pump valve or motor are damaged, it might be the moment you need to call for help.

At least having done your best to troubleshoot you have managed to avoid needing to pay a big call-out fee for a blocked hose.

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