Also, DO NOT use fine ground coffee with this machine, it clogs the filter like mad!Ok I had this problem and called them and they helped fix it, here's what you do: Learn more about Stack Overflow the company I'll try descaling it.So my wife tells me that she descaled it about 6 months ago using a vinegar solution based on some instructions we found online (might have been ehow.com or something like that). - put a new cup under and press brew coffee, while coffee grinds, turn the coffee grindness (inside coffee storage area) all the way up to 7. You’re under extracting your coffee.
Stack Exchange network consists of 177 Q&A communities including In most cases, it is a simple fix that requires very little effort. They are easily found online and the right strength for running through the machine. Let us help you fix your espresso machine quickly and accurately. If I had just RTFM I would have noticed that it tells you to clean that screen in the manual.I happen to have the same EC155 machine, and ran into similar problems - the coffee just didn't make it through the filter, but the pump was working, when filter removed. Featured on Meta It stopped pouring the espresso like used to be now is just dripping very slowly. On your Delonghi EC155 you have pressurized filters and small 51m diametr filters, so your brewing time don't have to be the same.One of the issues with lower flow of water through the ground coffee is that the beans have been ground too fine, from what my local Barista tells me, that they should be "grounds" not powder!
But yesterday I had time to kill while I waited for my husband so I ordered a cappucino. I am not sure what the main problem was. Edited to add: While commercial descaling/decalcifying solutions are available (and might work really well) for this application, the staff on a When deciding what to use, it may be to one's advantage to research whether the product is under warranty, and what the specific manufacturer recommends. Replace it and many issues with water flow will go away after you in addition de-calcium the whole system.To get a proper shot of espresso you need 9 bars of pressure consistently for 20-30 seconds.99% The problem is in the filter basket itself, not the pump or the inner tubes (however, making a descaling is always a good idea).For another 1% - check Nate M's answer to ensure that it's not something else - "Does water flow freely with the portafilter removed completely? It is at Delongies website delonghi.encompass.com around $2.60, while on Amazon around $10.
I do not believe that a normally working machine would be affected too much by the grinding coarseness selected. Rather than set-and-forget on the finest it can do, you should be adjusting the grind constantly: after every shot if it ran longer than 25 seconds (to get 30ml) make the coffee a little bit more coarse, if shorter than 25s then make the coffee a little finer. Start here for a quick overview of the site "If the problem is in filters indeed as I assume, than you need to clean them like shown in the manual - see figure 22 and further here P. S. The ULKA vibrating pumps that is installed on this machine is either working or not. The culprit was the filter itself - it is more complex, than I thought before. Sounds like the heater might be struggling to keep up with the pump; have you tried de-scaling? I'm not sure you can backflush an EC-155, as I'm not sure where the built up pressure would be diverted to..If the screen at the group head looks clean, then I might move on to descaling.I ended up changing the pump and the plastic valve that goes between the pump and the boiler. Keep doing this until you’ve found the proper temperature of about 200F/93C.Once you’ve found the number of seconds after the boiler clicks off that you hit the correct temperature, that’s when you should begin your shot from now on.Often times, the problem is your espresso machine is filthy. Is your espresso coming out too fast, too slow, or does it taste terrible? Read this page, maybe we can fix that.The major factor here is what type of machine you have. We fill the basket to about 1/2 full (it's a double shot basket, and we only need one shot - the single shot basket was fed to the garbage disposal years ago) and tamp. Use a stopwatch (I use my mobile phone) to calibrate these parameters, and aim for around 30 seconds for your shot.Unless your machine has a computerized thermostat — also known as a “Proportional Integral Derivative” (PID) controller — you need to read this section.Your espresso machine has a light on it somewhere that turns on whenever the boiler is on. Coffee Stack Exchange works best with JavaScript enabled Learn more about hiring developers or posting ads with us I also cleaned out the screen that screws to the bottom of the boiler which was almost completely blocked with gunk. Welcome to +1 for cleaning the group head screen; this may well have been part of the OP's problem (it was for me). Lately it's been having a lot of trouble pushing the water through the coffee.