Why is Delonghi Perfecta not producing steam to froth milk.Nothing at all happens when cappacino button is pushed

https://www.justanswer.co.uk/appliance/94x19-coffee-maker-delonghi-esam-5500-not-producing-steam.html
https://www.youtube.com/watch?v=Yq9tBpAFHoY

you should contact a producing company noted in OM.

My friend your problem is that the frother heat is foulty

Two O-Rings. A small Black one and a larger Orange one.

Ummn - something in your Q. seems not right. The milk is not heated directly - its only heated by the steam as it passes by (and picks up) by the milk using a venturi effect - same as a spray bottle attached to a garden hose. You say you have froth - but you can only get that if you have steam... (it does not just blow air thru to create bubbles). So froth = steam & steam = heat... so milk must be hot.
Suggest you check manual for the 'heat' settings for your expresso as this may have been changed. While this is adjustable, the milk is not.

Also always heat your cups before using them - the silver cup 'holder' at the top does a reasonable job but boiling water does far better.
Cheers Mike

I had the same problem. Make sure u still have boiling water left in it when you switch to cappuccino

Our friend is right. Two holes ( very small holes ) of the screw nob were blocked ! These holes were responsible for drawing the milk upward by vacuum. I used a needle to unblock these two holes . Bingo the problem was solved and now the steam can produce creamy milk

Delonghi Perfecta won't froth milk or allow hot water to come out from waterspout

that means that the steamer is not generating enough pressure steam.

This happens either because there is not enough heat, or if you release the steam when pressure is not enough.

Very common problem with the american maid makers.

bear also in mind that Krups are not the best at frothing milk, and this is also a basic model.

If you want the best capuccino Coffee machine, buy the italian ones, Gaggia, Delonghi, Ariete etc. that are all great at this, or get a bigger Krups as a replacement like the Krups XP405040 that is also good at capuccino

If you pull the cappacino component off. The black plastic thing at the end of the metal tube (where the cappacino component's attached to) can be unscrewed by rotating it with your hand. You can clean it with a brush and a thick needle to clean the hole the make sure that it's not blocked. After that just screw it back on and reattach the cappacino component.