How a Silvia Works
All wiring
On, heating up
On, at temp
Brewing espresso
Steam, heating up
Steam, at temp
Pumping hot water
Modification for PID
Dual Setpoint PID
Advanced Dual Setpoint PID

Coffee Cup
Complete Wiring

Here is the entire wiring diagram of the Rancilio Silvia. This shows all electrical wiring and components.