Troubleshooting; Alarm/Fault Messages - AEG Protect B Operating Instructions Manual

9. TROUBLESHOOTING

9.1

ALARM/FAULT MESSAGES

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