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fitted new pcb after speaking to ferrolli,works fine now .Thanks people

thanks,but it is set to pumped. the boiler has worked ok for a 3years apparently,but when i got to it the burner was coming on before pump and locking out. Electrical is good,have put a bi-flo pack in complete as zone valves were both shot

Hello,i have come across a sigma with s/live to boiler bringing boiler on without pump L having an output from board.If you switch off boiler thermostat,pump kicks in and pump will then continue to run when you turn stat back on.Any ideas, board? Also boiler stat cuts out after about an...