I hope that the after-sales assistance service is ...

I hope that the after-sales assistance service is sensitive and take care of problems related to this list, I also have an air-water conditioning system for a hotel and always error E21, maximum pressure and there is no way of being able to solve without calling the service technicians always postpone.
And to say that last year they intervened to restore the plant.
True it is not cheap.
However, we hope to see cases like this solved and that they can improve!