Welcome to Heavy Equipment Forums, cerg.
One of our Forum Rules is that English is the official language of Heavy Equipment Forums. I was able to translate the title of this thread, and also each of your posts, as seen below. Going forward, can you please post in English.
Thanks.
Translation of posts:
"Hello.Tell me, error 3990 ."
"Thank you!"
"For those who are interested, by mistake 13015 the drum did not drop, I shot a video."
"The file is large and does not load. In a nutshell, the drum control unit has fallen off, from vibration, resistance, through which the solenoid valve is controlled by lowering the drum."