The settings depend on what you are trying to do.
Have you read this thread?
http://forum.a8parts.co.uk/showthread.php?t=13803
There are two important Aux Heater settings in the PDF attached to the thread.
I did get rather deep into this area last year but I've mislaid all my notes whilst spending visiting hospitalised wife. Now she's back home I am having trouble finding them. Daughter-out-Law tidied everything = lost.
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)