Heat recovery type multi-split system with multiple operation modes and control method

The invention provides a heat recovery type multi-split system with multiple operation modes and a control method. The heat recovery type multi-split system comprises a hydraulic module and a heat pump refrigerating system, and further comprises a first electromagnetic valve, a sixth electromagnetic valve, a seventh electromagnetic valve and an eighth electromagnetic valve. According to the system, heat energy in the heat pump refrigerating system is effectively used for heating water to realize heat recovery, a plurality of electromagnetic valves are arranged between the hydraulic module andthe heat pump refrigerating system, so that different heating modes of heating water can convert by alternatingly communicating or cutting off the electromagnetic valves according to multiple operation modes of the system under different conditions of water temperature, room temperature and refrigerant temperature. The system has the advantages of being energy-saving, simple and reliable in structure, convenient to mainta