Maybe a stupid thing - but when I first printed with ASA / ABS, and then I want to print with e.g. PLA - I have to manually cool the printer, otherwise it will cool down itself (chamber and table) - it takes a long time. And when I release the printout (forgetting to cool down) - it is no longer possible to regulate the fans in the “hot bed preheating” mode (contrary to appearances, it does not heat up, but waits for it to cool down).
So either let the AUX and Chamber fans be adjusted from the panel in any situation (here you can change the setting - but so what - it immediately returns to 0%) - or let the printer “actively” and “intelligently” cool the table (with the AUX fan ) and the fan chamber (Chamber)