The printed circuit board is the control centre of the appliance. It oversees every process that occurs via the thermostats, sensors and switches. It also enforces the safety measures, making sure that the boiler ceases to function if any of the internal readings point to a fault in the operation.

Brand Name	Potterton
Colour	N/A
Material	N/A
Manufacturer Model No	5120219
Wear Type	N/A
Type	Printed Circuit Board
Certifications Met	N/A
Country of Origin	N/A
Protects From	N/A
Waterproof	N/A
Number of Pockets	N/A
Fits the Baxi Duotec	33HE and the 33HE A
Fits the Potterton Promax	Combi 33 HE Plus and 33 HE Plus A