The Barista Express (BES870) is one of the most common semi-automatic machines in home kitchens, and most of its problems fall into a small, predictable set of categories. Find your symptom below for a dedicated, step-by-step fix.
Official resources
For warranty-sensitive repairs or anything involving opening the machine's casing, always cross-check against Breville's own official support page and instruction manual (PDF) first — opening the machine yourself may affect your warranty.
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Power
Won't Turn On
No lights, no response at all.
Pressure
Won't Build Pressure
Weak or nonexistent shot pressure.
Pouring
Won't Stop Pouring
Water keeps flowing past your set volume.
Descaling
Won't Enter Descale Mode
Button combo isn't triggering the cycle.
Portafilter
Portafilter Won't Turn
Stuck, seized, or won't lock/unlock.
Descaling
Descale Light Won't Turn Off
Light stays on after a completed cycle.
Grinder
Won't Grind Fine Enough
Grind stays coarse even at the lowest setting.
Water Flow
No Water Coming Out
Nothing dispenses from the group head at all.
01Not sure which category fits?
| What you're seeing | Start here |
|---|---|
| Machine is completely dead | Won't Turn On |
| Shot is weak/watery, gauge stays low | Won't Build Pressure |
| Hot water/steam keeps running | Won't Stop Pouring |
| CLEAN light won't respond to button combo | Won't Enter Descale Mode |
| CLEAN light stays lit after descaling | Descale Light Won't Turn Off |
| Portafilter feels physically stuck | Portafilter Won't Turn |
| Grind is too coarse even at "1" | Won't Grind Fine Enough |
| Absolutely nothing comes out of the group head | No Water Coming Out |
If your issue isn't a perfect match for any of these, our general leaking water, no crema, and descaling guides cover the same problems across all machine brands.