What may NetCol 5000-C insulation cotton damage result in?

If there are many bubbles in the sight glass of NetCol5000-A, it indicates that the system lacks refrigerant.

The UPS5000 option temperature and humidity sensor does not support cascading

The refrigerant air cylinder of the Huawei air-cooled air conditioner does not need to be inverted on the electronic scale when charging the refrigerant.

In the process of disconnecting the battery pack switch, if there are multiple sets of batteries, first disconnect the main switch between the battery pack and the UPS, and then disconnect the switch of each battery pack