Error: Total surface area in room... too high. Help!

[ngb1]

I am a final year building services student and whilst trying to run a simulation on ApacheSim for my model I am constantly faced with the above^ (in the subject title) error message with a different room ID being displayed each time. Even the most smallest room in my model has flagged up. The room heights are 4m and the building is only two storeys.

Any help or advice would be appreciated.

[bbrannon4]

It's hard to say without looking at the model, but have you run any Model Reports (in ModelIt under the ModelIt menu)? I especially find the ones on the left useful, but if you just check everything, you can look through the report to see if any slivers are causing strange issues.