Fixing common dishwasher problems


This guide covers the most common problems found with dishwashers, and gives you a few things to check if you're having any of these problems.

You dishwasher won't start


There's a few things you should check if your dishwasher won't start its cycle, or won't turn on at all:

  • Check the door is closed properly. If there's anything stopping it from closing, the dishwasher won't start the cycle.
  • Check that the plug is connected to the mains properly – it might have come loose.
  • The dishwasher might not be turned on – try pressing and holding the power button.


The dishwasher isn't loaded properly


If you don't load your dishwasher properly, there might not be enough space between all the pots, so the water won't be able to get around and clean them. Have a look at our guide on loadding your dishwasher for some advice.


The drain pump isn't working properly


The best thing to do if your drain pump isn't working properly is to get an engineer out. Unplug it from the mains and disconnect the water supply, then arrange a repair. Our Team Knowhow experts can help you with this.


Not using enough detergent


A full load might need a little bit more detergent than you'd normally use, to make sure that everything gets cleaned properly.


Detergent left in the drawer after a wash


Sometimes the detergent drawer can get damp, meaning some detergent can get stuck in there. Just clean it out and make sure it's dry before you use it again.


Detergent tray lid won't close


If there's any detergent clogged in the tray or the lid, then it might be stopping the catch from closing properly. Take the tray out, give it a clean with some warm water and it should be fine.


Water not reaching the right temperature


Check that the hot water feed is warming up properly. You can try holding a thermometer under the hot water tap for about two minutes. If it's not getting to at least 60°C, then you can try turning up the heat on your boiler.


Banging or knocking noise from inside the dishwasher


This is usually caused by something knocking against the rotating spray arm inside the dishwasher. Stop the cycle then rearrange the dishes to make sure there's nothing in the way.


Glassware and cutlery is smeared


Setting the 'rinse aid' dose too high can leave you with smeared glasses and cutlery. Turn the dial down to a lower setting and things should come out cleaner.


Dishes aren't dry at the end of the cycle


If there's not enough rinse aid in the dishwasher, your pots might still be a bit wet when you take them out. Check the rinse aid and fill it up if you need to – then make sure you don't take things out until the program has completely finished.


White residue on dishes


Check these things if you're finding white residue on your dishes:

  • Make sure the rinse aid hasn't run out, or try turning it up slightly.
  • Check the dishwasher salt. Fill it up if you need to.
  • Make sure the dishwasher salt cap is screwed on properly.
  • Make sure your detergent is the right one for your dishwasher. If you're having problems with it, try a different brand.


Glassware is cloudy


Glasses can become cloudy in a dishwasher if they're not dishwasher safe. If you want to keep these glasses shiny, it's best to wash them by hand.


Tea or lipstick not coming off


Washing at low temperatures won't get these stains off, so make sure the cycle is hot enough. You can also check your detergent and make sure it's strong enough. If the stains are quite heavy, try wiping them down first before washing.


If you've got any other problems that we haven't covered, give a Team Knowhow Expert a call here.

The latest from Team Knowhow

Not Available