THE FORTHED MILK NOT HOT

SOURCE: steamed milk

I just had this same problem and solved it.  It was due to a very small amount of milk residue on the inside of the black frothing unit (the one with the dial which lets you choose foam or no foam).  Grip the dial firmly and pull it out while twisting. It may take a few seconds to twist and pull it out.  I had a very small spec of milk residue in one of the crevices on this piece.  Quick clean with a toothpick and plenty of hot water, reassembled, and it works perfectly.  Hope this helps someone.

SOURCE: Steam not frothing milk

Hi,

Have you decalcify the machine, the boiler does not heat up if there is calcium in it.

SOURCE: Hi, we have a Krups

suggestions include very cold milk.  having the nozzle just barely in for frothing.  
On my model there's an air passage in the nozzle that foams quite nicely.  If you have that too, it might be clogged with milk.  You have to keep these clean with every use.

SOURCE: primea ring - milk not hot

I had the same problem and my retailer worked it out for me when you select say cappuccino and go to the coffee quantity then the milk hold down the button that looks like a jug for over 2 seconds then the milk temperature comes up and you can adjust to low med or high now i am finally enjoying a hot drink

SOURCE: the steam wand is bubbling the milk, not frothing

THere is a little black tube inside - make sure its pushed out enough - about 1/16 an inch from the bottom. And you may have to clean it out. Happens to us too and after I do the above it works

Testimonial: "Thank you very much for the advice. I adjusted the black tube and the frothing is back!"