​Several Scenarios and Solutions for UPS Failure to Start

Several Scenarios and Solutions for UPS Failure to Start

　　Scenario 1: Newly installed UPS fails to start.

　　In this scenario, there might be two reasons. Users can start by checking if the battery connection plug on the back panel of the UPS is properly connected. If not, they can open the front panel and inspect the battery connection.

　　Scenario 2: UPS battery, after approximately two years of usage, fails to start.

　　For most users, this scenario is commonly caused by a decrease in battery capacity or the development of battery inertia after two years. If the battery fails to provide the desired backup time, users should consider replacing it with a new one and utilizing battery management software to prevent battery inertia.

　　Scenario 3: The voltage of individual battery cells is normal, but the UPS cannot start.

　　Although the voltage of each battery cell is normal, there might be other factors preventing the UPS from starting.

　　1. It is possible that there are connection issues between batteries or between the batteries and the UPS, such as loose connections or oxidation at the connection points. In such cases, removing the oxidation and reconnecting the components is necessary.

　　2. The fuse between the UPS and the batteries might have blown. If this is the case, replacing the fuse will resolve the issue.

　　3. If the wiring between the UPS and the batteries is long, thin, or contains intermediate connection points, significant voltage drop can occur, preventing the UPS from starting.

　　Scenario 4: The UPS fails to start after a period of time working in inverter mode.