It's not possible!!!
Then now, 3 months later, after some nice warm showers and baths, it went crazy... first after you finally get it in the RIGHT TEMPERATURE it turns off, I mean, is still there on, but the water is FU#@%@% COLD and then when you try to warm up a bit more it BURNS you!!! BURN BURN BURN!
And stays oscilating between cold and burning forever... and when it burns it also does an "exploding" sound!!! :-0