According to GE's documentation, ventilation on this oven is adequate in the recirculating or non-vented ductless installation.  I don't consider condensation covering the door, control panel and surrounding cabinets adequate.  Suspecting an improper installation, I had the installer company visit to see the problem. They performed the paper test indicating that according to GE, everything is in order.  The fan is operating at full blast and throwing a lot of air out of the top vent, but there is virtually no air draw from under the unit.