Why is My Dishwasher Not Draining?

Although it’s never a welcome sight to open your machine and find out the machine is still full of water, try not to overreact just yet. You could manage figure out the error by yourself, without having to call a repair person or invest in a brand-new dishwasher.

Standing water in your dishwasher can have any number of of causes a proportion of which can be straightforward to fix. So, before you call a dishwasher repair service here is a list of potential issues you can correct yourself. A number of which aren’t even related to the dishwasher itself.

Check the dishwasher wasn’t stopped mid-cycle

If you’re fortunate the standing water you have discovered may not be a problem at all. Instead, the cycle could have been interrupted.

The program might have been interrupted for a number of of reasons. Little fingers pushing controls, inadvertently pushing against the buttons, a power surge or opening the machine mid-program could all stop the program from completing and mean your dishwasher doesn’t empty.

If you think this might be the circumstance, or you think it could be worthwhile checking start your dishwasher again on a short program.

Some machines could have an empty program meaning it’s worthwhile checking your instructions or checking online to check.

Examine the waste disposal

If you have a garbage disposal examine this first as a blocked garbage disposal will block the dishwasher from draining. Turn on the disposal with fast running water to make sure there are no issues.

If you do find an issue drain un-blocker or a plunger may be used to unclog the blockage and this could rectify the issue.

Check the sink for issues

If you sink is draining inefficiently this could signify a plumbing issue instead of a fault with your dishwasher.

In the case that the kitchen sink is draining slowly you can try putting a little bicarb and vinegar down the drain, leaving it for a few minutes, then washing it away with hot water.

A plunger might also be employed to try and remove the obstruction.

This could be all you need to do to let the appliance to drain so start a short rinse and drain program to check. If not you could remove the standing water by hand using a bowl and also a sponge and troubleshoot a few more possible issues.

At this point make sure you disconnect the machine to stay safe.

If during any one of these investigations you suspect you may have detected and solved the error you don’t have to go through the remaining issues. Just run an empty program to make sure your machine is repaired.

Check and wash the filters

Any number of things could block the filters including corn kernels, labels from jars, plastic film covers and broken glass. Clear glass can also be hard to spot if you aren’t looking for it.

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

Is the waste pipe obstructed?

The next place to check is the waste water pipe. Stuck food, a kink in the hose or a crushed hose could all stop your machine from draining.

Subject to the position of the waste pipe (normally the corrugated one) you could manage look at it simply by taking off the kick plate alternatively you might be required to pull the machine out from the wall.

Have a look at the hose first to find out if it has been squashed or kinked. You might have the means to fix these issues by hand which should fix the issue, however, it’s worth noting that when this has occurred it is significantly more likely to happen again so you might need to order a spare hose.

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

If you can’t blow air through the hose this may be the reason your dishwasher isn’t emptying.

Disconnect the hose at the sink end and give it a thorough clean to get rid of the obstruction. If you can’t remove the obstruction or the waste hose is slit or damaged purchase a new one. If you may remove the blockage then put the hose back and run a quick cycle to make sure you have solved the error.

You may also check the point where the waste pipe connects under your sink as well. This is a likely place for blockages to occur so if you happen to take off the hose give this connection a thorough scrub as well.

Examine the drain valve

You can manually check the drain valve to check it hasn’t got stuck. The drain valve will usually be found at the base of the machine on the valve bracket. Consult your instructions if you’re unsure.

Pressing down on the valve or wiggling it a bit will likely be adequate to tell you if it’s seized. If you can see anything blocking it get rid of this. If you can’t, this may be when you should call a repair person unless you are undaunted by ordering and replacing the valve on your own.

Check your pump is not blocked

Your appliance pump makes use of impellers that can get obstructed by broken china or other debris. Check your impellers aren’t broken by taking off the safety cover and ensuring that the impellers can rotate freely.

Listen to your dishwasher while it’s on

If it sounds unusual your dishwasher pump or motor might be faulty and need replacing.

Call a plumber

If you have been through the above list and the problem remains, or you suspect the pump, pump valve or motor are damaged, it could be a good time to call for help.

At least having tried to troubleshoot you have managed to avoid having to pay a big repair charge for a clogged filter.

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