Home Forums General Discussion Technical Questions Problem with Otis 311

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

2002 stm power fail is a generic fault that is always present on the tool after powering on the system. This is certainly not a problem, there is something you are overlooking. I would not think the rcb board is the problem.

Yea, I agree. RCB wasn't the problem. I am in limbo now until I can figure this out. I relearned the hoistway and made sure all the hw switches where aligned and present but still no go. OTIS really is a pain to work on LOL. Thanks for the reply.

Is it going to a PKS? What does the SVT screen say on M-1-1-1?

Check your PTD's they can fail (on, off or blinking) after a power down causing a default 2002 fault because the LMCSS is confused.

I keep getting a 2700 brake time out and 2702 brake ready error on a 311. It will shut down after 30 or 40 runs and stay at a floor and then it will start running again. The drive says check fault log 4-2-1. I replaced the brake switches and nothing changed. Went thru BSR relay and LBR relay and UD relay. What's going on?

Is this a 18atf machine like the pictures on this forum? If it is change your brake coil. It tends to over heat and open up. After it fails check coil resist. If it's more that 57 ohms get rid of it. Change your suppressor and check your brake voltages.

Also what was the drive fault?