Fan speed at 255 after Filament change

[erdemdemir85]

OrcaSlicer Version

1.7.0

OS version

Windows 10

Additional system information

No response

Printer

X1C

How to reproduce

Slice a model with filament changes and overhangs

Actual results

After Filament changes/support interface/(maybe even overhangs) the Fan Speed is set to Max value 255.

In the G Code every "CP TOOLCHANGE START - END" section looks like:

...
...
M621 S3A
M106 P2 S0
M106 S255

G1 E-1.4 F2700
G1 X176.502 Y216.597 F30000
G1 Z28.1
G1 Z24.9
M73 P58 R108
G1 E2.4 F2400

; filament start gcode
M106 S255

G4 S0
G1 X175.752 Y216.597
G1 Y215.847
G1 X179.292 E0.30272
M106 P3 S128
G1 X210.752 E2.69028
G1 Y236.597 E1.7744
G1 X175.752 E2.9930
G1 Y215.847 E1.7744
G1 X176.502 Y216.597
; CP TOOLCHANGE WIPE
G1 X210.190 E2.8808 F1584
G1 Y219.454 E0.2443
G1 X176.314 E2.8968 F1800
G1 Y222.311 E0.2443
G1 X210.190 E2.8968 F2198
G1 Y225.168 E0.2443
G1 X176.314 E2.8968 F4200
G1 Y228.026 E0.2443
G1 X210.190 E2.8968 F4250
G1 Y230.883 E0.2443
G1 X176.314 E2.8968 F4300
G1 Y233.740 E0.2443
G1 X210.190 E2.8968 F4350
G1 F30000
G4 S0
G92 E0
; CP TOOLCHANGE END
;------------------

while my filament_start_gcode looks like that:
; filament start gcode
M106 P3 S128

so where does the "M106 S255" in my gcode come from?

Image Fan Speed:
https://imgtr.ee/image/Dxrsr

Expected results

All fan speeds should be set according to the settings

Project file & Debug log uploads

TestBug.zip

Checklist of files to include

• Log file
• Project file

[dartrax]

It has something to do with the support. When you disable support generation, the problem will be gone.
(Note: In v1.8.0 there is a new problem when you enable Fan speed-up time and Fan kickstart time, see #2600 )

[github-actions]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[dartrax]

@erdemdemir85, can you update your issue for Version 1.9.0?

From my observations, the Filament start code is now correct. However, the Fan speed might still be wrong, please check.

[github-actions]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[github-actions]

Orca bot: This issue was closed because it has been inactive for 7 days since being marked as stale.