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Ender 3 S1 Pro

Ender 3 S1 Pro “Cura” fan problem solution

Just bought my first 3D printer, a Creality Ender 3 S1 Pro.
Tried first prints with Creality Slicer, but found some limitation.
Then I started with Ultimaker Cura (version 5.5.0). This version had the standard settings for the Ender 3 S1 Pro, so easy install and setup.
However when starting to print, the models were bad. I found that the Cooling Fan did not start at all.
Easy fix I found was that in the Extruder 1 settings the Cooling Fan Number was set to 1 (as it has 1 extruder).
By changing this 0 it solved the problem and the Fan now does exactly what it should do.
The gcode generated changed from M106 S85 P1 to M106 S85
P1 in the gcode is Fan 1 but the Ender 3 S1 Pro could not read this, but with nothing (no P1 in the code) it defaults to Fan 1 (or Fan 0)
For info, my Ender 3 S1 Pro has the factory firmware

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