📹 Profitec Pro 300: Electrical/Control System Overview Updated February 23, 2022 14:47 Learn about the internal electrical components of the Profitec Pro 300 semi-automatic espresso machine. Profitec Pro 300: Overview of the Electrical/Control System Pump (00:00) Fill Solenoid (00:39) Liquid Level Probe (00:49) Steam Boiler High Limits (01:05) Steam Boiler Heating Element (01:21) Brew Boiler Heating Element (01:42) NTC Probe (02:01) PID (02:10) Static Relay (02:23) Brew Boiler High Limits (02:38) Brew Solenoid Valve (02:59) Control Board (03:28) Switches Wiring (03:54) LED Wiring (04:10) Pressurestat (04:30)