Worcester Printed Circuit Board PCB 8748300939

Worcester Bosch 8748300939

Boiler PCB (Before Serial No. FD 987) 

Worcester Bosch Greenstar 25Si

Worcester Bosch Greenstar 30Si Combi

The printed circuit board or ( pcb ) is the boilers central control.

It controls and monitors every process that occurs via the switches, thermostats and sensors.

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 boilers processes.

The printed circuit board is effectively the brain of your boiler, It is programmed to ensure everything is running as it should.