Ferroli 39803100 printed circuit board BNIBFerroli 39803100 printed circuit board BNIB. FERROLI 39803100 PCB VMF6. 1S. Product Information: The printed circuit board or ( pcb ) is the control centre of the appliance. It oversees every process that occurs via the switches, sensors and thermostats. 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

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