1. After turning on the system power, press the automatic button to detect the water level in the pool.2. After the water level meets the requirements, a pump is started by frequency conversion, and the pressure in the pipeline is detected at the same time.3. If the pressure in the pipeline is greater than the set value, the pump will be adjusted by frequency conversion. If less than the set value, start numbering.4. If the pressure in the pipeline is greater than the set value, the current state remains unchanged; Otherwise, stay the same. Otherwise, it stays the same. If less than the set value, no.5. If the pressure in the pipeline is greater than the set value, the current state remains unchanged. If it is less than the set value, it is No.