The printed circuit board or ( PCB ) is the control centre of the appliance. It controls and monitors every process that occurs via the sensors, thermostats and switches. It also enforces the safety measures, making sure that the boiler ceases to function if any of the internal readings point to any kind of error or fault. The printed circuit board is essentially the brains of the appliance, ensuring everything is running correctly and safely.
This part is present 5 different boilers in the Worcester range
![Worcester Printed Circuit Board 8748300910 [683]](http://allgasltd.com/cdn/shop/products/Screenshot2023-04-21at14.57.05.png?v=1682086302&width=1445)