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

SOURCE: DeLonghi Perfecta ESAM5500 when trying to make a

Had this exact problem a few times on a cleaned well maintained milk jug top with an ESAM5500M. Delonghi 'repaired' it by sending a new milk jug frothing top.

It's caused by milk fat deposits, the frother part on the milk jug may look clean but deep inside it's not. I clean mine with pipe cleaners, detergent and hot water and still it wouldn't froth.

The problem re-occurs for me every 6 months or so. You could buy the milk fat remover solution to clean it. Personally I just boil the whole milk jug frother in detergent and the again in descaling solution, that's fixed this problem twice now, although I think it will eventually corrode the 'o' rings on the frother, still cheaper than buying a new frother part each time though.

If it still doesn't work after that, the only other reason for this problem I found mention of was caused by a broken rubber seal where the milk jug fits to the machine. It's most likely to be milk fat deposits inside the frother though.

SOURCE: I have a Delonghi Magnifica

I purchased a unit second hand for my wife's birthday today. It's only 4 months old, got it home, tested it, same problem... No froth!

I've read all the posts here and all were very helpful troubleshooting guides however they did not solve the issue.

Understanding how the frothing mechanism functions is half the battle in figuring out the solution. It's a simple vacuum type system. No doubt you've read about checking the orings. This is definately the first thing to check however if this is not the reason then consider the following.

The larger of the white tubes that has the red and black oring inserts deep into its port on the tap. Why? It pushes steam past the milk pipe directly into the chrome frothing tube which causes a vacuum essentially drawing milk up it's hose creating the froth. What you can't see without further investigation is that on the underside of the tube centered between the red and black orings is a small hole. This hole is responsible for drawing the milk upwards. If this is blocked, and it probably is then no milk and no froth. Use a really small screwdriver to carefully clean the white tube both from the front and the little hole underneath.

So in conclusion. Any air leak between the red and black orings will prevent the vacuum required to draw milk up the tube and alternatively any blockage of the milk channel will also obviously prevent the flow into the frothing mechanism. Hope this helps.

SOURCE: Delonghi Magnifica Coffee Maker the milk is not

You did not state anything about descaling, but every now and then, I also add water and descaler to the milk container and use the "Frothing" program to run through the water and descaling-solution (double-click the Cappuchino button).
I have also noticed that the first cup (and sometimes even the second) will produce less milk, and not as well frothed milk as later cups. My theory is that the machine is warmer when producing later cups.
If possible, you could try to run two-three frothings of plain water through before switching to milk. I realize this is inconvenient, but it could be worth testing this to see if it helps. We luckily have two milk containers and keep one filled with water just for the purpose of heating up (or whatever we do :) the frothing system before serving the first cappuchino.
Good luck!

SOURCE: Delonghi ESAM3500 with not froth milk. Water will

Hello there,
Make sure that the milk container lid is clean; rise it vigorously with hot water, Make sure that you are only using 2% milk and Make sure that it's cold 2% milk.
Once that is checked, and not to be the problem, then it requires you to replace the coupling block.
There are many possible points that you may have the leak. The pump, boiler, volumetric dozer, water/steam valve are connected together with Teflon pipes and supports at the ends with the clips and one "o" ring. In one of this point the clip can slip out so the Teflon hose to be loose and so the leak which is at the point which you can see. There are also some cases if the machine is more that 2-3 years one of the above parts to leak itself due to tearing out and it might need to be replaced. So you need to remove first the top panel and then the side panel and work the machine with extra safety since we have power wires and with visual check to find the point of leak.
If it is just the Teflon pipe and clip slip out the secure it back again, if it one of the part you can try to tight up and if the leak insist then you need to replace it.
Would be glad to know if the information was helpful to you. All the best Elect_Comp