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
Identify the whole pattern, not just one illuminated button. The BES500 manual distinguishes alternating cup lights, a descale alert involving cup and steam lights, and flashing milk-setting lights associated with the steam...
Symptom-first diagnosis
Check whether water fails at the bare group head or only when the portafilter contains coffee. That distinction separates a supply problem from resistance at the basket or coffee puck. A running pump sound is not proof that...
Symptom-first diagnosis
Automatic milk texturing ending early is not the same as weak steam. Check jug placement and the milk-temperature sensor area, then note whether the milk-setting lights show a warning. Do not bypass the sensor or keep...
Symptom-first diagnosis
On the BES500, the starting state matters as much as the buttons. Do not confuse the two-cup cleaning operation with descaling. Confirm the machine is off and cool, then use the descale entry procedure from the correct manual...