ENG
25
Operation Manual
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6. TROUBLESHOOTING
Problem
The UPS is connected
to the mains, but the
indicator does not
light.
The UPS beeps and
operates in the
o
ff
-line mode even
with normal voltage in
the mains.
The UPS operates
from the mains, but
does not operate in
the o
ff
-line mode.
The UPS beeps long
during operation from
the mains.
The UPS does not
provide the expected
time of operation in
the o
ff
-line mode or it
is switched o
ff
.
Cause
1. The switch in not on.
2. Input fuse has come into action.
3. Unreliably connected cables.
1. The UPS found depressions or
surges in input voltage and has gone
to the standby mode.
2. Input fuse has come into action.
3. Poor contact in the UPS connec-
tion circuits to the mains.
1. Batteries are discharged greatly.
2. Defective batteries.
3. The UPS is to be repaired.
Overload.
1. Batteries are discharged greatly.
2. Defective batteries.
3. Circuit of connecting cables of
batteries is open.
Solution
1. Switch on the switch.
2. Switch o
ff
the load. Press the
fuse button. If the UPS operation
is normal check the load power.
3. Disconnect cables and connect
them once again.
1. It is normal phenomenon. The
UPS protects the equipment
against voltage disorders of the
mains.
2. Disconnect the load. Press the
fuse button. If the UPS operation
is normal check the load capacity.
3. Check the UPS connection
reliability to the mains.
1. Disconnect all equipment and
charge batteries in full.
2. Replace batteries.
3. Consult with the service center.
Decrease the connected load
power.
1. Charge batteries in full.
2. Replace batteries.
3. Checkt the connection reliability
of cables to batteries.
If none of the above methods can solve the problem, please seek professional advice at your
nearest service center. Never attempt to repair the product yourself.
