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6
Displays and Troubleshooting
6.1
Warning Sounds
Warning
sound
Sounds every 10
seconds
Sounds every
second
Sounds every two
seconds
Sounds twice every
second
Sounds every 2
seconds;
continuous warning
sound after 50 min
Sustained warning
sound
6.2
General Troubleshooting and Fault Rectification
Fault
No LED display on
the front cover plate
Alarm buzzer sounds
continuously with
normal AC supply
Meaning
UPS is operating in battery mode.
UPS is running in battery mode and will shortly
shut down (battery system has reached the battery
undervoltage limit).
Battery system faulty, it may have to be renewed
(battery diagnosis negative).
UPS output is overloaded.
Overload of the step-up/down converter due to
UPS overload.
UPS faulty.
Cause
Battery missing
Battery fault
On/off switch not pressed Press the switch again
UPS overload
26
Solution
Insert the battery and first
charge it up for at least 8 hours
Renew the battery with a
battery of the same type
Check whether the load
matches the UPS capacity
indicated in the technical
data
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