The Baxi part is located within the printed circuit board section. The printed circuit board is the boilers central control. It oversees every process that occurs via the thermostats, switches and sensors. It also enforces the safety measures, 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 essentially the brains of the appliance, ensuring everything is running correctly and safely.

Brand Name	Baxi