This printed circuit board is an official Baxi part designed for Main Combi/Combi HE, Main HE, Performa, Combi and System IE boilers.
The control centre of a boiler, the printed circuit board (PCB) monitors and controls every process occurring throughout a system via switches, thermostats and sensors. It enforces safety measures too, shutting down boiler functions if internal readings indicate any fault such as high pressure or low water levels.
