User manual

77
EN
9.1 ALARM/FAULT MESSAGES
Alarm or notification Possible cause Notification/solution
LCD not lighting up Battery not connected
Connect the battery
Battery defective Replace battery using
a replacement kit
On/Off button was not
actuated
Press the
On/Off button again
Alarm sounding despite
normal power supply
from mains
UPS overloaded
Ensure that the UPS
load meets the
specific capacity
(see Specifications)
Mains connection plug
is loose
Insert the mains
connection cable
correctly
The autonomy time
drops in the event of
a power failure
UPS overloaded
Remove all non-critical
loads
Battery voltage too low Charge the battery for
6 or more hours
Battery defective due
to an excessively high
ambient temperature,
aging, or inappropriate
use
Replace battery using
a replacement kit
9. TROUBLESHOOTING