i had a alpha cd 32c fitted aprox 4 years ago and now the hot water is not working it goes luke warm then freezing cold and then luke warm again. the neon A is flashing and neon B is illuminated. I just wondered if there was a simple solution to this problem. the timing of this problem is unbelievable as i a have taken the cover out for repairs but you could not claim in the first month and I still have a week to go before I can ring.