Thermal cycling system and control method of the thermal cycling system

A thermal cycle system, comprising:

• driving devices, one or a plurality of outdoor units, and a plurality of indoor units, which are connected by pipelines;
• a bypass pipeline for the plurality of indoor units, a bypass valve being disposed in the bypass pipeline;
• a pressure sensor that senses a pressure difference ΔPo, across the plurality of outdoor units;
• and
• a controller that is preset with a pressure difference set value ΔPset, wherein the controller calculates a pressure offset parameter ΔP=ΔPo−Pset and adjusts an opening degree of the bypass valve based on the pressure offset parameter ΔP so that the pressure offset parameter ΔP approaches zero, and
• wherein the controller is preset with a first pressure offset threshold P1, and the controller is configured such that closed indoor units enter a bypass mode one by one when ΔP>P1, until ΔP≤P1;
• wherein the indoor unit comprises a heat exchanger and a fan, and the bypass mode is a mode in which a cooling medium flows through the heat exchanger of the indoor unit and the fan of the indoor unit is not operated, or
• wherein the bypass mode is a mode in which a valve on a direct-through flow path between a fluid inlet and a fluid outlet of the indoor unit is opened.