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I bought a thermostatic mixer shower. It will only give cold or hot water no matter what temp is on the dial. If you turn the temp all the way down its cold. If you turn it all the way up, its hot. If you set it at mid-point its either hot or cold (depending on whether it was last set at...

Mick, Besides the valve I changed I didnt touch or alter any valves. I thought I made this clear by explaining I had changed the combination valve in my first post? I was replying to Agile's post asking if I had changed anything else. I did not. As it happens, you were spot on! I...

My Megaflow is indentical to this one - //www.diynot.com/forums/viewtopic.php?t=201568 two thermostats (top one for immersion, bottom one for E7) Its all electric. Cant get a piccy as I'm staying at my brothers house so my missus can get a shower in the morning. I havent touched...

Hi guys, I've got a very odd problem with my Economy 7 Megaflow boiler. Turned the hot tap on and hot water came out for a minute or two then it went luke warm then it went virtually cold. I asked my Dad and he said its probably the cold water combination valve has failed or is full of...