Scale buildup will reflect how good was the water used to fed the machine. Delonghi Filter Coffee Machine: How it works and circuit diagram (176)The power indicator on my Delonghi Filter coffee machine stopped working suddenly. Can also be a good occasion to see the inside of the boiler to see how scale buildup grew in it, and the old element will also tell you some precious info about it, so it could be a good idea to ask for pictures of it, and decide if you want them to clean the boiler and some other things while they are at it.

Removing an element from the boiler is pretty straight forward (impact wrench and a new gasket) usually seal the job clean and clear, but some complications can occur if that thing refuse to budge. I know your machine is an HX machine and I am TOTALLY ignorant on those, so maybe something else can cause the issue. Maybe there is some other situations causing it to break, but I am not very good at espresso machines internals. If you call for hot water from the wand and pull too much water from it before the boiler had time to properly refill it, it can also lead to an element failure. Clean out the chute in front of the bean hopper. Or, you may want to unplug the machine, unplug both wires from the heating element and probe the two pins with a multimeter. If you are lucky, it is popped from a random problem and a reset will get you on track. Remove the burr and clean inside the grinder. You may want to check if you have a 'button' on a solenoid on top of the boiler: it is like a fuse reset button. This could be several reasons your grinder is not working but you need to start with cleaning, focus on the following 4 areas: Clean the hopper out of beans. Usually, machines won't activate the heating element if there is no signal from the fill probe saying there is water in the boiler, so it is very rare to be the major cause of the breakage, but some mess from the controller can also happen. Problem: Delonghi La Specialista Grinder not starting. Let's say your top fill boiler probe is defect and don't call the machine for water when it is empty, bang. It may be ''normal wear'', but it can also happen if the element is heating without water touching it. Unfortunately, the element break (ruptured).

Coffee maker delonghi electric circuit