The Ram air doors should only be fully open on the ground. On lift off the doors should move towards fully closed, and then modulate between fully closed and flight open position depending on the airflow required over the heat exchangers. The ground deflectors are there to keep water and slush out of the packs on the ground. As soon as the doors move away from Fully open they pop out of the way to let the air in.
With the blue lights on in flight, the heat exchangers will not get enough cooling air and a pack trip for overtemp is very likely.
The doors can be locked out in the flight open position. Here the pack will work perfectly well, but there will be too much air going through the heat exchangers in the cruise, leading to a slight drag rise.