Recent content by amd3766

I changed the diaphragm (which was punctured) and that fixed the problem. Thanks a lot ! most grateful for your advice.

Hi I've got a Potterton Performa 28i. The CH works fine, with a system pressure around 2 bar, but the supply of hot water is playing up. Pre-heating the water works, but the boiler then doesn't switch into hot water mode when a hot water tap is opened. I can only get hot water when I open...