I mentioned this at other locations, but Cura is converting the printer settings wrong and this may be a problem for you, too.
When updating to 4.8.0 the fan index of the part cooling fan gets altered to "1". It got increased by one.
This results in disabled part cooling for any future sliced print.
To fix this open Cura settings, printer section, select your printer and use the settings button in the same row.
A new window opens with two pages. "Printer" and "Extruder #1" (more if you have more extruders). Enter the first extruder page and check the part cooling fan index. It is the last option in the nozzle settings on the left, below the nozzle offset settings.
For printers with only only one extruder this index value should be "0" as counting starts with 0.
If there is a "1" a non existing fan will be activated during prints and your prints will melt away like chocolate in the sun.
If you have more than one extruder you should check the rest, too. The second extruder should be "1" and the third "2" and so on unless you wired them differently.
I strongly recommend everyone to check this before slicing any new model, or you will have the most broken results you ever saw on your printer.
At least one other user had the same issue and you don´t want a ten hour print to result in a pile of muddled plastic.
When updating to 4.8.0 the fan index of the part cooling fan gets altered to "1". It got increased by one.
This results in disabled part cooling for any future sliced print.
To fix this open Cura settings, printer section, select your printer and use the settings button in the same row.
A new window opens with two pages. "Printer" and "Extruder #1" (more if you have more extruders). Enter the first extruder page and check the part cooling fan index. It is the last option in the nozzle settings on the left, below the nozzle offset settings.
For printers with only only one extruder this index value should be "0" as counting starts with 0.
If there is a "1" a non existing fan will be activated during prints and your prints will melt away like chocolate in the sun.
If you have more than one extruder you should check the rest, too. The second extruder should be "1" and the third "2" and so on unless you wired them differently.
I strongly recommend everyone to check this before slicing any new model, or you will have the most broken results you ever saw on your printer.

At least one other user had the same issue and you don´t want a ten hour print to result in a pile of muddled plastic.
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