Single machine achieves two main functions: winter heating and summer cooling. No need to separately configure heating boilers and chillers, reducing equipment procurement investment, saving machine room space, and simplifying system design. The variable frequency compressor adjusts its output capacity in real-time according to changes in building load, reducing frequent start stop cycles, stabilizing water supply temperature, and effectively reducing average energy consumption under variable load conditions. Support parallel operation of multiple units, and can flexibly match the total capacity according to project requirements; Support installment installation for easy expansion in the later stage. When a single unit fails, the other units continue to work to ensure uninterrupted operation of the system. Optimize the design of the refrigeration system to maintain stable heat output even in low-temperature outdoor environments, suitable for cold regions in Northern Europe, and ensure continuous heating capacity in cold winter. Equipped with a high-precision controller, it can automatically switch between cold and warm operation modes; The WiFi module supports remote parameter setting, real-time condition monitoring, fault alarm, and operation data recording, making it convenient for centralized operation and maintenance management of projects. Suitable for underfloor heating, low-temperature radiators, fan coil units, and air handling units to meet the diverse end configuration needs of office buildings, hotels, and commercial complexes. Equipped with high and low voltage protection, anti freezing protection, water flow monitoring, overheating protection, and fault self checking functions, timely alarm for abnormal working conditions, ensuring long-term continuous and safe operation of the unit.