Hello, I have had the electric board re-routing my mains supply today and i have had no power to our house. Once re-connected, my boiler is fault coding C1 - Fan speed too low? I do not know if the electricity is a red herring or just that the fan is U/S. Is it a easy fix? what cost can i expect for a replacement fan? Any internet sites that my be able to supply? Thanks in advance if anyone has any ideas.