Switched over to hot water only and ever since have had a problem with hot water. When you first turn on the tap . . . you will get hot water after a while and then it runs cold! Anyone know what the problem might me or had a similar experience!
I assume you have a Combi boiler?? depending on the make, I would sugest the Diaphragm, Micro Switch, or Flow switch may be the problem you should get a RGI to take a look
