As a trainee...in India. I would also like to know in a particular project we have a lot of VVVF drive failures in Kone. We have around 100 units. The time when the company took over the Kone lifts as third party, these drives are failing and we are not able to find a solution. Can you please suggest what can be the reason for these failures. Its Kone Monospace Elevators. Could somebody please help me with this issue