HELP! no hot water in the house,boiler working ok.central heating fine,motorised valves opening ok,radiator in bathroom which works off the hot water heating up no problem.pipe going into hot water cylinder hot,but pipe only just luke warm coming from bottom of tank.the tank is 4months old,and there has been no problem until 6weeks ago.have had original plumber back,can't find nothing wrong......had another 2 plumbers out,they can't find nothing wrong.....HELP ANYONE. THANKS.
Aint no plumber, but i had this problem few years back, it was poor lay of pipe work, the pipe must always be on the rise even the in horizontal. If memory serves me right I turned temp on boiler up quite high and kept flicking the pump on and off to cause water movement in the coil. It worked for me, best of luck