Hi, my zanussi zdf221 dishwasher wont work, it makes a noise and constantly empties, any ideas please

No a noise filter is a different kettle of fish. That stops electrical interference noise from affecting your television, radios and electrical devices.

The most likely source of the hum is the start capacitor on the motor, or the motor itself.

https://www.google.com/search?q=samsung+dishwasher+start+capacitor

This has a different idea

Humming or Grinding If your Samsung dishwasher makes noise when starting that sounds like a low hum, it's part of normal function. The motor makes this sound as it operates throughout the wash cycle. However, a dishwasher making loud humming noise or grinding sounds could mean that debris is caught in the drain pump.

Samsung Dishwasher Making Noise? Follow These Tips

This says the drain pump, but the drain pump only runs to empty out so it wouldn't do it all the time.

https://kitchenbuds.com/dishwasher-guides/samsung-dishwasher-making-grinding-noise/

Lots of other ideas and videos

https://www.google.com/search?q=samsung+dishwasher+humming

..

get a tech out there, as these appliances get more sophicated, they become nightmares its best to buy a basic model

The first step of a dishwasher is a drain / rinse drain. I would turn the dishwasher off at the socket, turn the nob to the off position only turn this in a clock wise direction IE: the direction the nob would naturally move. Turn on back at the wall and start as you would normally. The dishwasher will empty the water out in its first step then should cycle through as normal.

Make sure it is completely level.

Hi the most likely cause is the electronic mounted in the control panel behind the progamme dial. there is a relay which can unsolder itself. you can try resoldering (use lead free solder). or change the electronic.

The slight buzz is coming from the water inlet valve solinoid. It's OK.

But check whether water is getting into the inlet tube of the washer. Check the filter at the rear of the dish washer body wher the inlet tube from your water tap is connected.

Do you have it hooked up to hot or cold water supply? Most residential dishwashers don't come equipped with a booster heater. If it's connected to the cold side, you'll have to replace the angle stop with a single outlet stop and replace the hot angle stop with a double outlet stop. This should help out, if not, make sure you have hot water in the faucet before starting the dishwasher. Most dishwashers need at least 120 degree hot water supply.

if in uk, try currys partmaster mor you local service force dealer. don't know this particular model but should be easy to do. remove back and element is usually held in by 2 7mm nuts. disconnect wires from element, making a note of where they go. there is sometimes also a bracket inside the oven which holds the element up and this also should be removed

Hi,
Here is a tip that I wrote that will help you with your problem...

Dishwasher Problems - Water will not drain out
http://www.fixya.com/support/r4078724-dishwasher_problems_water_will_not_drain

heatman101

Zanussi Aquapulse dishwasher - is filled with water inside, is not washing and the lights keep flashing on and off - has anyone any idea what may be wrong with it?