hi folks i recently had a old mira sport shower replaced by council with new model mira sport 2012 model last week it worked great for first cpl of days. it has 3 settings on top low eco and high i always keep it at high setting however ive noticed for last 2-3 days when i first put the shower on the water is not heating properly only coming out cold/luke warm so what i have to do is switch it from high setting to eco for about 30 seconds then switch back to high and as soon i switch it back to high the shower works fine heats up no problem . anyone got an idea of what the problem is? its a pain really and it should be heating no probs on high without mucking about with it.thanks