Vaillant turbo plus 824 E timer control help needed?

I've just moed into a house with the above boiler with the fitted electronic toimer control module. Unfortunately, the timer is very, very confusing and I'm unable to set it or even work out how to set it.
There are no on off signs on the display just symbols which aren't helping at all. Could someone point me in the direction of a manual or user guide? Or even give me a few pointers on what I shoudl be doing to set it. Many thanks