The Vaillant printed circuit board is the boiler's 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 boiler's operation. The printed circuit board is effectively the brain of the boiler.

Brand Name	Vaillant
Colour	Grey
Material	string
Manufacturer Model No	20056561
Wear Type	string
Type	Printed Circuit Board
Certifications Met	string
Country of Origin	string
Protects From	string
Waterproof	string
Number of Pockets	string
Compatible With	Vaillant ecoTEC PLUS 612, Vaillant ecoTEC PLUS 612, Vaillant ecoTEC PLUS 615, Vaillant ecoTEC PLUS 615, Vaillant ecoTEC PLUS 618, Vaillant ecoTEC PLUS 618, Vaillant ecoTEC PLUS 624, Vaillant ecoTEC PLUS 624, Vaillant ecoTEC PLUS 630, Vaillant ecoTEC PLUS 630, Vaillant ecoTEC PLUS 637, Vaillant ecoTEC PLUS 824, Vaillant ecoTEC PLUS 824, Vaillant ecoTEC PLUS 831, Vaillant ecoTEC PLUS 831, Vaillant ecoTEC PLUS 837, Vaillant ecoTEC PLUS 937, Vaillant VIH CL 15 S (2006-2010), Vaillant VU 05/03/0126 (2005-2005), Vaillant VU 126/3-5 (2005-2010), Vaillant VU 156/3-5 (2005-2005), Vaillant VU 156/3-5 R1 (2005-2010), Vaillant VU 186/3-5 (2005-2005), Vaillant VU 186/3-5 R1 (2005-2010), Vaillant VU 246/3-5 (2005-2005), Vaillant VU 246/3-5 R1 (2005-2010), Vaillant VU 306/3-5 (2005-2005), Vaillant VU 306/3-5 R1 (2005-2010), Vaillant VU 376/3-5 R1 (2006-2010), Vaillant VU 466/4-5 (2007-2010), Vaillant VU 656/4-5 (2007-2010), Vaillant VUI 376/3-5 (2006-2010), Vaillant VUW 246/3-5 (2005-2005), Vaillant VUW 246/3-5 R1 (2005-2010), Vaillant VUW 316/3-5 (2005-2005) Vaillant VUW 316/3-5 R1 (2005-2010) and Vaillant VUW 376/3-5 R1 (2006-2010)