Delonghi is one of the most famous brands in the world of coffee machines. They make premium models that cost a fortune. Owners swear that these are worth every penny and they may be right about this.
Although these machines have premium designs, materials, and construction, they are not immune to malfunction. They can also succumb to wear and tear near the end of their long lifespan. Unlike cheap coffee machines, owners of these are unlikely to rush into buying another one. They will try to save the machine through repairs.
It would be great if the item is still under warranty. The company can fix it for free. You might even get a newer item in its place. If the warranty has expired, then you would have to seek out other options. Find an expert in Delonghi coffee machine repairs in your area.