Thanks for the replys guys! As regards to the heater control valve,we actualy had this problem with a Puma a few weeks ago. The previous keeper had rigged the pipe work to have hot air but no cold,the Control Valve was missing completely (its under the wipers). While i was cleaning the car it over heated & luckly it burst one of clips they'd attached the pipes together with otherwise we'd of never seen it as its under a rubber housing.

Now my Dad used the KA earlier this evening before the lady came to view it,he said he put the heaters on & hot air was coming out of them.If it is the Heater Control Valve thats broke would we still be getting hot air coming of of the heaters???