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8.2 Faults
PROTECT 1. outputs detailed error messages by means of
which you or the service personnel can quickly and accurately
localise and interpret any malfunctions that occur. You can find
suggestions for action / solutions in the following to correct
problems using error descriptions according to chapter 8.1.2:
8.2.1 Error Messages
Message / display Cause Solution
No display, no acoustic
signal although system
is connected to the
mains current supply.
Mains and/or
battery voltage not
in tolerance range,
poss. totally
discharged battery.
Check mains connection
again. Check the back-
up fuse and the mains
input miniature circuit
breaker as well.
Mains OK, but UPS
does not switch to
bypass
PositionMains input
use is in “OFF”
position
Switch mains input
miniature circuit breaker
to “ON”
“Line” LED flashes and
“Battery” LED lights up
Mains voltage
and/or mains
frequency are
outside of tolerance
Check the mains
(voltage, frequency)
“Inverter" LED and
"Battery" LED light up.
The acoustic signal
sounds every 4 seconds
(operating states 7-10).
“Inverter" LED and
"Battery" LED light up.
The acoustic signal
sounds every second
(operating state no.
6).
Mains voltage
supply interrupted.
Automatic
switchover to
battery mode.
Try to re-establish the
mains voltage (poss.
fuse triggered in the
subdistribution?).When
the acoustic signal
sounds every second,
the battery is almost
completely discharged.
Carry out a system
shutdown of your IT
equipment at this point
in time at the latest.
“Fault” LED lights up,
warning signal sounds
twice per second (error
descriptions no. 12/13).
Overload of the
UPS System.
Immediately reduce the
capacity utilisation of the
UPS by disconnecting
part of your loads.