Hi Alex 75,
Update!!!!!
Our Schindler Smart MRL 002 Elevator had a few communication problems. We received the F1 error because of the inverter. The drive was not turning on. We cleaned the contacts and it is functioning again. However, the control board has power going to it but it isn't turning on. The technician guy suggested we get a new control board, we are in the process of doing that now.
By the way I forgot to mention our Schindler Elevator is a european brand and not US brand. Schindler USA does not install such small elevators as the one we have. The technician who assisted us used to be an agent for Schindler USA, he is an agent for thyssenKrupp americas right now. Because the initial installers only gave us the electrical schematics and not the manuals I came on here for assistance. (The original elevator installer is no longer in a position to give us service)
The drive is now communicating with the main board, but there is no communication with the control board so the car is unable to move.
Hopefully we will get through. However if we don't, the second option I am considering is making the elevator non-proprietary.
Just wanted to give you an update.
Thanks!!