Posted: December 2nd, 2019, 10:31 am
Hi, I'd appreciate any help with this prob;em When I require hot water during the Summer months and haven't had the central heating on everything is fine. In the Winter, when the central heating is on/been on and I turn the hot water on, the instant the hot water reaches temp and switches off, there is what sounds like water hammer banging through the house. Could the 3 way valve be the problem? Many thanks in advance for any help.