Hello, I encountered a problem with the kinetix 6500 drive, error code s22, loss of 3 phase voltage. After disassembling and replacing the thermal paste in the drive, it became better, but after a day of work the error still appears. Moreover, sometimes the frequency is every minute, several times in a row, and then it can work for 8-12 hours without this error. The 400v voltage in the network is fine, the inside of the drive is also without visible damage. Has anyone encountered this and how did they solve the problem, the results of a search on the forum did not solve the problem, thank you?