cool box in Scenic 2002

I have a 2002 registered Scenic Megane, just below the dashboard in front of the gearchange, there is a sort of coolbox which is referred to in the handbook as a refrigerated box. Inside the compartment is a small rotary opening flap but it seems to make no difference to the temperature inside. I just keep a couple of water bottles in there which always seem cool enough, but when I saw the word refrigeration in the handbook it got me wondering if there is some way of getting it to become cooler by using the dashboard controls for the heating system perhaps. Anyone know how the system is supposed to work?

Thanks Guys.