RAVENHEAT 0012CIR06012/0 IGN CONTROL BOARD - CSI MOD. - RED. Product Information: The printed circuit board or ( pcb ) is the control centre of the appliance. It constantly checks every process that occurs via the thermostats, switches and sensors . It also enforces the safety protocols, 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 effectively the brain of your boiler, It is programmed to ensure everything is running as it should.
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