VAILLANT DISPLAY PCB 002 005 656 1 - BRAND NEW

The printed circuit board is the boilers central control. It constantly checks every process that occurs via the sensors, switches and thermostats. It also enforces the safety measures, making sure that the boiler ceases to function if any of the internal readings point to any fault in the boilers operation. 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 present in 36 different boilers in the Vaillant range.