Problem
No water is coming out the group head (No espresso!)
Water is being dispensed from the steam wand and hot water outlet.
Espresso Machine Details
Breville Barista BES870XL
Disassembly
See https://www.youtube.com/watch?v=V-WCjDRRFFw
Water Flow
| Flow | Description |
|---|---|
| 1 | Water flows from pump to boiler |
| 2 | From boiler to manifoldvalve assembly |
| 3 | Default flow for water/steam |
| 4 | To group head |
| 5 | From manifold From valve assembly to drain |
| 6 | Pump safety valve to drain |
| 7 | Steam/water to drain |
| 8 | To hot water exit |
| 9 | From head to pressure gauge |
...
Solenoid Valve Assembly
| Part | Description | Manufacturer Info |
|---|---|---|
CEME v397vn25pr44 series 5C | 3-way solenoid | http://www.cemegroup.com/solenoid-valves/v397-199 |
| CEME v799vn15pr44 series 5C | 2-way solenoid | http://www.cemegroup.com/solenoid-valves/v799-211 |
Parts
| Part Number | Description |
|---|---|
| SP0001474 | Group Head Steam Ring (54mm) |
| SP0010236 | Main PCB |
| SP0020444 | Solenoid Valve Assembly |
Troubleshooting
No Water Getting to Group Head
Observations:
- no water is coming out the group head (no espresso)
- water IS being dispensed from the steam wand and hot water outlet.
- no pressure when trying dispensing a shot
- no water when trying to dispense a shot
- 3-way solenoid valve had melted
- something had blown on the PCB
Testing:
- blew through hoses to determine if clog exists. (All good)
- descaled machine using citric acid and water
- backflow from portafilter did nothing (no water)
Solution:
- replace solenoid valve assembly
- replace PCB (waiting on part)
Success?:
- still waiting on part
References
| Reference | URL |
|---|---|
| User Manual | https://www.breville.com/content/dam/breville/us/assets/miscellaneous/instruction-manual/espresso/BES870-instruction-manual.pdf |
| Parts | https://www.ereplacementparts.com/breville-bes870xl-the-barista-express-parts-c-116052_116055_290179.html |
| Parts | https://www.ereplacementparts.com/search_result.php?search_in_description=1&search_type=1&keywords=BES870XL&show_only=parts |
| Replacing Group Head Gasket | https://www.youtube.com/watch?v=XSmttsIQC7M |
How to Replace a Clogged Water Tube (shows opening) | https://www.youtube.com/watch?v=V-WCjDRRFFw |