I went looking for the chamber fan settings in a filament profile today, and they don’t seem to exist? The help might indicate they are there, but it leads to nowhere. Is the chamber fan a totally manual setting during every print now?
They’ve slotted the settings in the Advanced tab gcode. Bambu Lab Mods to be cautious about | Bambu Lab Wiki mentions a mod but they’re not recommending reducing the fan speed by too much. Personally tune mine to “S0” but run mostly PETG/ABS/PA etc.
Here’s for the H2D. You have to enable it in the printer profile to be able to adjust it in the filament settings.
How To: Adjust chamber exhaust fan for PLA, PETG, etc - Bambu Lab H2D - Bambu Lab Community Forum