boiler cutting out

Hi, is there anyone that can help me with my boiler problem please? I have a Worcester Green Star 38 CDI classic boiler with hot water issues. When I turn on the shower the water fluctuates between hot and cold. The temperature goes up to 110 and then it cuts out - there are no error codes. The...

Hello, I live in a two floor semi with a gravity fed conventional gas fired boiler (Potterton Kingfisher MF). The boiler is fed cold water from the loft water reservoir tank (which also feeds the cold water taps in the bathroom). There is an expansion vessel attached to this cold water feed to...