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Message / display Cause Solution
Duration of the
emergency power
supply shorter than
setpoint.
Batteries not
completely charged
/ batteries aged or
faulty.
Charge the batteries for
at least the recharging
time acc. to chapter 2.3,
and check their capacity.
If the problem remains,
contact your dealer.
“Line” LED and “Fault”
LED light up, continuous
warning signal (error
description no. 17).
Switch-off due to
UPS internal
overtemperature
detection
Make sure that no
overload is present, the
UPS fans are not
blocked and the ambient
temperature is in the
tolerance range. Wait for
10 min. cooling down
phase, then switch on
again.
Error description no. 19 Switch-off due to
short-circuit in UPS
output
Correct short-circuit.
Switch UPS on again,
connect loads one after
the other again.
“Fault” LED lights up,
“Battery” LED flashes,
warning signal sounds
once per second (error
description 21).
Fault in DC circuit
or battery system
faulty.
Notify dealer!
“Fault” LED lights up,
continuous warning
signal.
Fault in the UPS. Notify dealer!
Further diagnoses can also be found in the table list in
chapter 8.1.2.
If you cannot solve the problem that has occurred, stop the entire
procedure, switch off the UPS and disconnect the UPS from the
mains. Please contact our hotline in this case (see p. 4).
Please have the serial number of the unit as well as the
purchase date at hand. The hotline will provide you with
technical support and can inform you about further
procedures once you have described the problem.