Before the battery is installed, a single battery open circuit voltage is required: 12V battery is greater than or equal to 12.60V or 2V battery is greater than or equal to 2.10V. When it is found to be unqualified, the battery needs to be recharged.

When the battery is discharged, the discharge voltage of a faulty battery drops rapidly, resulting in insufficient backup time for the entire battery. What should be done?

When the differential pressure switch of the air filter of the indoor unit is closed, it indicates that the filter is too dusty and should be disposed of in time.

The sleep of the UPS module is to turn off the inverter of some modules when the system load rate is low and stable, so that some modules go to sleep, and the remaining un-hibernated modules bear a larger load to solve the problem of the low efficiency when the system load is light.

UPS2000-A-(1-3kVA) closes the mains input switch and directly enters the bypass working state.