I've got a 2 year old Vokera Compact 24 Combi boiler which has developed a fault in that the domestic hot water supply is running very slowly, I checked the flow on the cold inlet pipe that goes into the heat exchage unit and it's fine, the little plastic filter is clear so there is no loss of flow rate going in, but it's really slow coming out of the taps. Also it sounds as if there is air trapped in the pipes but I turned off the cold water at the mains and opened the hot taps to release the air, then turned the cold back on, but still hot water is very slow.
Does anyone have any ideas??
Does anyone have any ideas??