Re: electrolux esl624
Have had several of these, and never really got to the bottom of them. If all hose are clear and the pressure chamber unit is not blocked anywhere, I have taken the unit off and drained completely and refitted. This has worked in some cases, but in others I have had to replace the pressure chamber. When I have done this, it has worked every time. Hope this is of use. The problem is that it is all so time consuming. Good luck.