Laguna II,Compressor of air conditioning switches off the 2500 revolutions

With my Renault Laguna 2, year 2003, 2.0, 99Kw, Km 78000, the condenser, dryer and throttle of the air conditioning system was recently renewed. The condenser had become leaky, so that coolant leaked out. After that the system worked again perfectly, until I then found that from an engine turntable of 2500 the compressor is on display. If the speed falls again below the value, the compressor starts up again automatically. Even Bosch and Renault have been puzzled since L It is tapped that the switch-off signal is generated either from the climate electronics or the motor control. Does anyone have an idea? Thank you