I’m having this printing problem on my P2S on the left side, when viewed from the front. It happens on large parts. I’ve tried rotating the part on the Z-axis, but it always happens on the left side. Is there a specific setting I need to adjust? There’s no problem with small parts.
Or it seems like a cooling issue.
Since it’s a vase, the process is exactly the same. But it only happens on the left side and on parts 20 cm or taller. Maybe it’s the airflow. What do you think?
i think that is the reason why they sell the left side exhaust fan kit, for big prints since the right fan cannot reach that far, i installed it on my P2S and prints come out clean on both sides every time
Which fan are you talking about?
Do you have a link you could give me?
Thanks in advance.
I had exact same issue. I looked closely at the plastic strip that’s attached to the inside of the door, it isn’t in the correct place, I gently pulled it off and refitted it so that it made a better attempt at sealing that side. It seems to have worked but I havent done quite such a large print since.
I raised a ticket and sent photo’s of the gap and explained the problem, BL sent me a seal and some new hinges, the seal didn’t fit and I didn’t need new hinges…
Auxiliary Part Cooling Fan - Left | Bambu Lab EU Store
you mount it on the left side of the P2S chamber (thats why you have the 3 screw mounts on the side)
Thanks for the information, but I don’t have any issues with the door’s seal.
I’ll try the option with the fan.
Great, I just added the new fan. However, I think the problem persists.
Is there a specific setting for filament cooling?
Or should I leave it at the default setting?
Because it seems to be blowing very hard even by default.
personally i s just leave the fan setting as is, and so far i got great results with it, but depending on your situation you may need to adjust the speed a bit, its something you have to try and error yourself into 
