by plumbbob »
Mon Apr 13, 2009 11:36 pm
I am glad the shower is now working, but it is really frustrating you posted the question without bothering to include important information.
If you had said about the burst water main, I would have explained that because electric showers control water temperature by altering the flow, a sudden drop in pressure caused by the burst would have caused the water temperature from the shower to rise dramatically, and then the low flow would cause the elements to be switched off causing the freezing temperature you described. Simple really.