1.Imported programmable logic control panel(PLC)is used for the unit control system. The human machine interface configures a large touch screen. Which enables easy and visual operation. 2.The unit control system adopts a reliable safety protection equipment. E. G. high/low voltage protector. Ventilation overheat protector. compressor electically protector over-current protector. Water flow protector. Emergency switch. Thermal sensitive soluble chock. Safety valve. Etc.