Hello everyone

I had a Lvib go up on me in the drive so I replaced it and I regain the 15 volts I was missing. I also found that the pvt was sending a ton of noise back to the drive so I replaced the pvt and that problem cleared up. The problem I am having is when i release the elevator to normal service it rezones to the bottom floor then goes up to the 1st floor and shuts down it logs a 2002 STM power fault. Their is no faults on the drive. I am going to switch out the rcb Board . Please help if you can . Thanks