Glow-worm 0020023825 main printed circuit board

This Glow-worm brand printed circuit board is compatible with Flexicom, Ultracom and Ultimate 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.