Product Information: The printed circuit board or ( pcb ) is the control centre of the appliance. It monitors and controls every process that occurs via the thermostats, sensors and switches. It also enforces the safety parameters, making sure that the boiler ceases to function if any of the internal readings point to an error in the boilers processes. The printed circuit board is effectively the brain of your boiler, It is programmed to ensure everything is running as it should.

This part is listed against 2 boilers on our website, The Saunier Duval THEMAPLUS F 23 E , COMBITEK F 23 E .