Problem with ATS48C17Q

Greetings !

I'wondering if anyone can help about our problem with soft starter ATS48C17Q, we use it for the motor of 75kW. We have two of them in the same cubicle , and they where working fine 'till this winter. From then we have problems with one of them.

We have problem that coil for the conactor 1KM1 ( LC1D150P7 ) get burn out aproximatly evry 2 weeks, actualy we have that elec.card inside the conctator paralel with the coil get burn out ( resistor on it ). We put new coil or whole connctator but after couple of weeks same happens. The equipment for the other motor works fine. We also have every time fuse F04 blown out. We check out currents, voltage ( R1A - R1C is 230V ), connections, motor ( every time )and everythnig seems to be fine, we also replace coil suppressor module LA4DA2U but same thing happend. So if someone maybe have idea whats is happening we would appriciate help.