Radek

@mfaccin What board do you use? Which fans do you want to control on connectors FAN1 and FAN2? What do you mean P1 and P2? Submit your configuration.

Do you use all 3 fans to cool the printed part? I'm not asking about the fan model, but about what part of the printer it's supposed to cool.

@mfaccin Send me your configuration files (Configuration.h and Configuration_adv.h) from which you compiled fw.

@mfaccin If you want to control multiple fans with command M106 with index P0 to P2, you must define the number of fans. #define NUM_M106_FANS 3

Check the BLTouch connection.

Can you tell me more about your problem? What version of the SKR board do you have, what is your display? Can you send configuration, connection photos, or a video...

If you disconnect BlTouch, Will the display work?

Then you have a poorly configured display. Submit configuration files.

Configuration files from which you compiled FW confiruartion.h configuration_adv.h

Not what I find .... What FW did you use? Didn't you compile it yourself?