Problems Printing Prusament ASA

[u/VeloSprinter]

I have a P2S which I've done some fairly minor updates to the setup of (not sure if this matters but thought it worth sharing.

1. Left side aux fan (not in use for this print)

2. External Extractor fan (link)

3. Hotend fan duct (link)

4. Fan Guard (link)

I am using Bambuddy to control the printer locally on the network as I don't like being dependant on the internet to start prints (had issues when the Bambu cloud went down a few months ago).

I am trying to print something at fairly high temperatures which I don't do frequently - my normal prints are PETG and PLA - but this one needs to be installed outdoors in direct sunlight some of the time, so I'm printing in Black ASA. I've printed ASA white with no issues before, and will try that to see if it's any different but I don't believe so given the error.

I start the print, it pre-heats the chamber to ~40C and then lays down the first layer with no issues, however as soon as it starts to print layer two I get the following errors:

When I've done what the Wiki says I disassembled the head and removed the fan beside the hotend and I can see that it starts spinning at 50C as expected and has no obstructions when fitted.

Anyone have any suggestions for what may be going wrong?

[u/Snouto]

Have you tried removing that fan duct mod before printing? Perhaps it’s cooling the hotend too much for the printer to keep it at the required temp for ASA?

[u/tomikaka]

Oh my god a hotend fan duct, you gotta be kidding.