Error: Total surface area in room... Too big, Help!

[ngb1]

I'm a building services engineering student in my final year with a basic to intermediate knowledge of IES.

I need help as soon as possible to resolve this issue. Whenever I attempt to run ApacheSim for my model I am faced with the above message from the subject title^^^.

The problem is whenever I try again to rerun apachesim, the message flags up a different room ID, even the very smallest room in my model.

Any help and or advice would be appreciated.

Cheers.