I recently replaced my bath taps, and have a problem with the hot tap. As soon as the hot water starts coming through, the flow stops immediately. We have a combi boiler, and didn't have this problem before. Also, the bathroom sink tap which is on the hot water run after the bath, works fine. I don't think its a fault on the tap, but wondered if it was something to do with the pressure.
Any help would be greatly appreciated.