25
ENG
Operation Manual
8. TROUBLESHOOTING
Problem
The UPS is plugged in,
input voltage LED
c
is
o
ff
.
The UPS emits sound
alarms and operates in
o
ff
-line mode even in
normal mains voltage
conditions.
The UPS operates in
on-line mode and
doesn’t operate in o
ff
-line
mode.
The UPS emits a sound
alarm for 60 seconds in
on-line mode.
The UPS doesn’t provide
the expected duration of
o
ff
-line operation or
switches o
ff
.
Cause
1. Power switch
m
is o
ff
.
2. The fuse is in disrepair.
3. The cables are improperly
connected.
1. The UPS has indicated falls or
surges in input voltage and
entered backup mode.
2. The fuse has been activated.
3. Poor contact in UPS mains
connection circuit.
1. The batteries are discharged.
2. The batteries are in disrepair.
3. The UPS is in need of repair.
Possible overload or short circuit
in the loaded equipment.
1. The batteries are discharged.
2. The batteries are in disrepair.
3. The circuit of battery
connection cables is open.
Solution
1. Turn on the switch
m
.
2. Replace the fuse.
3. Disconnect the cables and
connect them again.
1. It’s a normal phenomenon. The
UPS protects computer equipment
from failures in the electric mains.
2. Reduce the load, turn o
ff
the UPS
and replace the fuse.
3. Check the quality of UPS
connection to the electric mains.
1. Disconnect all the equipment
and charge the batteries.
2. Replace the batteries.
3. Address a cervice centre.
Remove the cause of short circuit
or reduce the power of the
connected load.
1. Charge the batteries to the full
2. Replace the batteries.
3. Address a cervice centre.
If neither of the above mentioned methods can solve the problem, please seek professional advice
at your nearest service center. Never attempt to repair the product yourself.
SMART 1000
SMART 1500
