Uninterruptible
Power Supply
ENG
5. TROUBLESHOOTING
Problem
Cause
Solution
The UPS is connected to the
mains but the battery charge
indicator goes out.
1. UPS power cable is poorly
connected.
2. Failure of the output fuse.
1. Check the UPS for proper
connection to the mains.
2. Replace the fuse.
The UPS generates acoustic
signals and operates in the
autonomous mode at normal
mains voltage.
1. The UPS has detected
surges/failures of input volt-
age and switched
to the back-up mode.
2. Poor contact in the circuits
of the UPS connection
to the mains.
3. Activation of the input fuse.
1. It’s a normal event. The UPS
protects the equipment from voltage
failures in the power supply mains.
2. Check the UPS connection
to the mains.
3. Replace the fuse.
The UPS operates when
connected to the mains
but fails to work in the
battery mode.
1. The battery is heavily
discharged.
2. The battery failed.
3. The UPS requires repair.
1. Disconnect all the equipment
and fully charge the battery.
2. Contact the Customer Service
to replace the battery.
3. Contact the Customer Service.
The UPS generates frequent
acoustic signals when con-
nected to the mains.
Overload.
Release some load.
The UPS fails to provide the
expected time of operation
in the
battery mode or turns
off.
1. The battery is heavily
discharged.
2. The battery failed.
1. Disconnect all the equipment
and fully charge the battery.
2. Contact the Customer Service
to replace the battery.
If neither of the above-mentioned tips are helpful, please contact for a professional consultation the
hot-line support@sven.ru or the nearest Customer Service. Do not attempt to repair the UPS by your-
self.
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