The coffee is tepid.

Description :

The espresso coffees that I make are tepid, although the boiler pressure is normal (between 0.6 and 0.8 bar for older model and between 1.1 and 1.2 bar for new model).


Solution :

1- In this case, the machine is operating at the wrong pressure.
The steam taps must be opened, allowing the boiler pressure to fall to 0, which will trigger the heating system .
2- The air relief valve is defective.
3- The 1.5 bar security valave is defective.


Advice :

Drain the brewheads, the hot water and steam circuits before putting the machine into operation each day.