How to turn off aux fan or force chamber “heating mode” for PETG/PLA prints?

[Sebo3D1]

Here is solution allowing for full manaul contol:

X2D Manual Aux fan control in cooling mode and disable autocooling for PETG+PLA

If you are printing PETG with a PLA interface, the default cooling will likely be too strong. It works well for PLA, but when switching from PETG to PLA, both AUX fans may ramp up to around 90%, which can cause the PETG to warp and detach from the PLA interface. If you try to manually adjust the AUX fan speeds, they will reset on each layer and during every filament change. To fix this, you can disable automatic cooling. Once it’s disabled, you’ll have full manual control over the fans (both A…