Heater/Aircon Permenantly stuck on!

Hi all
I hope everyone is well.
I have an X Reg P38 4.6l Vogue.
The Heater/Aircon appears to be stuck on. It doesn't matter which buttons I press it is now permanently on. There is a book symbol in the display which I have checked out in the manual. Take it to the manufacturer!

So before I spend money at Landrover has anyone got any suggestions or simple checks that I can do to solve this problem.

Thanks in advance

Bison

it is prob a blend motor..

Hi J the Range

Thanks for your reply. Why do you say the Blend Motor?

Thanks

Bison

tis unusual for blends to go, normaly blows hot one side cold otherside. if you do a search for blends it will tell you all you need to know..j