This boiler is approx 6 years old and has just been serviced. Not had any problems with it for the last 2 1/2 years whilst we have been in the house. Tonight was running a bath and the hot water just stopped - we have no water at all coming out of any of the hot water taps. Actually a little will run out of the kitchen tap but soon disappears. Have got a plumber coming tomorrow morning but he doesn't really know much about these boilers - this make is not very popular in the area in which I live! Any ideas will be fully appreciated.