only now I have realised there’s this toggle. I don’t quite understand what it does on my H2C because it doesn’t have a right aux fan.. toggling it on does nothing and in fact it turns back off after a second or so
If you take a look at the air filter at the back of the printer, you can see the filter doesn’t cover the entire section of the exhaust. When H2C initially released, in heating mode, that gap is blocked off and air will pass through the filter. But when in cooling mode, the air gets exhausted through that gap, bypassing the air filter.
Bambu Lab added the option to also block off that gap in cooling mode through that toggle.
I believe that toggle gets reset during the calibration stage when starting a print. If you toggle it on after the printer starts printing, it should stay on.
You can also toggle it on before sending a print by going in to the printer settings
