Start with an observation, not a reset. Record the complete light pattern, message, water flow or noise. Related models can use different maintenance steps.
Symptom-first diagnosis
A flashing cleaning indicator on a matching BES870 directs you to the cleaning-cycle instructions. Identify the indicator label and revision before deciding that it needs descaling. A normal water rinse and the complete...
Symptom-first diagnosis
A steady combined CLEAN/DESCALE indicator on the matching BES870 revision calls for the descaling instructions rather than assuming the flashing-light cleaning cycle will clear it. Confirm the label first: the lamp behavior and...
Symptom-first diagnosis
First separate weak steam from poor foam. Strong steam that heats milk but creates little texture points toward milk and wand position; a weak or uneven jet points toward the steam tip or supply. Neither observation, on its...
Symptom-first diagnosis
This comparison points you toward the basket, outlet or coffee puck before a total loss of water supply. Separate an empty clean basket from a basket loaded with coffee. Never unlock a portafilter that may still be pressurized.
Heating and temperature
Espresso tastes cooler than expected, especially on the first shot.
Grinder and beans
The grinder does not start, hums, or runs without delivering grounds.
Espresso pressure and extraction
The gauge stays near zero and espresso runs quickly or barely extracts.
Espresso pressure and extraction
The pressure gauge rises high while espresso drips, stalls, or tastes harsh.
Grinder and beans
The grinder stalls, clicks, hums, or stops after starting.