No water out of the brew head
I have descaled 2x, and cleaned the brew head and portofilter screens, but water no longer comes down thru the brewhead. Water comes out of the steam wand, and steam comes out of the wand too. No problems there. I think what is happening is that the pump is not engaging. I don't hear that customary kick in sound I usually hear when the pump goes on. What do you think my problem is? Is this something I can fix myself? Thanks for your help. I really like this machine!
I have had two of these same machines and both failed the same way.
I called 1-800-STARBUC and even though I did not have proof of purchase (first was a gift) they called my local store and the manager just gave me a new one.
It worked for a while and then poof. Same problem.
I know this is not a solution, but it just is not a very good machine.
I may tinker with the second broken one, but I don't feel very cheerful about my chances of fixing it.
Have you cleaned the back side of the brew head screen? You need to remove the phillips-head screw in the middle (be careful not to strip the head); if you're using very finely ground coffee often it can get behind the screen and clog it. If this doesn't fix it...
Will a stream of water come from the steam wand when the machine is cold? If so then your pump is working. If it's only coming out when the machine is hot then it's just the pressure from the boiler pushing it out and you may need to replace your pump. This machine uses an ULKA EX5 and it can be bought from espressoparts.c
This may not work in your situation but I was able to repair my pump.
1. I removed the pump and disassembled it.
2. Went to this website and compared my pump components
to their diagram-photos.
3. I noticed a small ball-valve in the diagram that I didn't see in
pile of pump parts.
4. Upon closer inspection I discovered the ball wedged into the
barrel of the stainless or aluminum piston rod.
5. I replaced the ball as it looked worn. For lack of
anything better that was immediately available
I cut off a large round pinhead
found in my sewing kit.
6. After reassembly and re-installation of the pump I tried it out.
Nothing! Well I had to go somewhere and came back three
hours later and turned the machine on for one last try -
as of now it's working! Steam and espresso both on line.
Only one of the o-rings in the pump looked like it needed to be
replaced. Maybe some of the fine springs need to be replaced
as well. The machine is seven years old and I just saved $250
not replacing the it. And I saved $75.00 dollars not
buying a new pump.
I also took snapshots as I disassembled everything so
I'd remember what went where....good luck.
I had the same issue.
Carefully took apart the pump unit and replaced the little plastic ball (stuck in the piston rod thing) with a slightly larger iron (no lead!) ball from an old ball-bearing.
Keep in mind that the water you drink will touch this part - so clean thoroughly!
@ghostrider111: Thanks a lot for sharing!