What happens when you press the button on the remote control, do any lights come on (remote control battery check). When you use the remote to put on the heating, the little red fan under the nav screen should come on.
I'm sorry I don't know where the reciever module is but it might just be that your remote control is set to ventilate not heat. If so, the dealer has to re-programme the remote control.

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2008 Saphire Black on Biege.