Hi,
I replaced the inlet valve to the cold water tank in the loft after a leak today but am now not getting any hot water from any taps. I suspected an air lock so back filled from a mixer tap in the bathroom only to hear that the water was flowing into the hot tank, which was pretty much empty. As far as I can work out no water is making its way to the hot tank from the cold tank. I checked for blockages but nothing apparent. I completely stumped on this. Does anyone have any suggestions?