Anybody know about AEG dishwasher Favorit Sensorlogic?

I bought it new 4 years ago and have been well pleased with it.
On the front it says: AEG Genius favorit sensorlogic.

Recently two problems have occured:
1. it doesn't heat the water anymore
2. The "turbo dryer" doesn't work anymore

It still washes the dishes ok (especially if I open the door and chuck in a liter of hot water at the start of the economy wash program).

Am pretty good at engineering problems but don't know where to start with this as logic tells me it could be anything from a naff sensor to a dead heater element.

Any ideas?