9. TROubleshOOTIng
Problem
Reason
Solution
UPS can’t be switched
ON or OFF
1. Button Power is not pushed.
2. Short circuit or overloading.
3. Trouble with software or with
communication.
1. Нажмите ещё раз.
2. Отключите часть нагрузки.
3. Disconnect USB cable between PC and
UPS
UPS makes short
sounds and goes to
battery mode even if the
utility power is normal
1. There is spikes or short blackouts
2. Fuse is canceled
3. There is a bad contact between UPS and
utility power
4. To prevent deep discharging of the
battery
1. UPS protects equipment, this is normal
2. Reduce load and change the fuse when
UPS is disconnected from the utility power
3. Check the contacts
UPS can’t provide
normal back time in the
battery mode.
1. Batteries are discharged
2. Batteries are defective
1. Disconnect the load. Charge batteries
2. UPS should be tested
3. Batteries should be changed
Eng
Pro+ 400/500/700
17
