The Worcester Bosch 87483005120 Printed Circuit Board (PCB) is a genuine replacement control module engineered to serve as the central electronic brain of your boiler. This PCB manages essential functions including ignition sequencing, fan and pump control, sensor input monitoring, safety interlocks and diagnostic logic. By coordinating these systems, it ensures smooth, efficient heating and hot-water performance while supporting accurate fault detection and reliable safety shut-down responses. A faulty PCB can cause erratic operation, frequent fault codes or complete control loss, so replacing it with the correct OEM part is key to restoring dependable boiler performance.

This printed circuit board is compatible with Worcester Bosch Greenstar and RD series boilers that specify part number 87483005120 in their technical documentation. To ensure correct fitment and reliable operation, always verify the part number on your existing control board or consult your boiler’s service information before installation, as control modules vary between models and control platforms.

Supplied ready for direct replacement, the 87483005120 PCB connects seamlessly with the boiler’s existing wiring harness and sensor interfaces without modification when installed by a qualified engineer. Choosing this genuine Worcester Bosch component helps restore accurate electronic control, improves system responsiveness and contributes to efficient, trouble-free heating and hot-water performance in compatible Greenstar and RD boilers.