Hi I have a Potterton Performa 24 combi which is a couple of years old now and the hot water has got cooler as time as gone by , but recently the hot water is as good as useless, when you open the tap the boiler fires up and warm water does come through eventually, but when it does the boiler clicks out for a while, and then it fires up again and this is how it goes on, if you open the tap to full the water stays cold, you have to throttle the taps right down low to get any hot water at all, the central heating side is working fine, any ideas will be most appreciated
Cheers Mark
Cheers Mark