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Alarm or Notice Possible cause Remark / Action
Output Short
Circuit
(Alarm #58)
Intermittent
Alarm
The UPS has detected an
extremely low "consumer"
and regarded it as a short
circuit.
UPS tried to delete the short
circuit and functions as a
constant current source
(3 x I
N
for 100 ms).
If the short circuit exists, then
the UPS shuts down.
Heat sink Over
Temperature
(Alarm #73)
Intermittent
Alarm
The internal heat sink tempe-
rature is detected outside the
tolerance range. Possibly fan
error (see also below).
Regard air circulation. Do
not block front and rear of
ventilation. If necessary clean
off increased dust, fan function
check, replace fan if necessary.
Fan Failure
(Alarm #193)
Continuous Alarm
The uninterruptible power
supply has detected that
one or more fans are not
functioning correctly.
If necessary, clean off increa-
sed dust, check fan function,
replace fan if necessary.
Check with your dealer.
Fatal EEPROM
Fault
(Alarm #53)
Continuous Alarm
Verification of the data stored
in the EEPROM, possibly
caused by a not successfully
encrypted running firmware
update (flash process).
Check flash file, perform
flash process again.
If the problem persists,
contact your dealer.
Manual bypass
switch is activated
(Alarm # 144)
Bypass switch is activated. Check the position of the
bypass switch. If necessary
put the manual bypass switch,
back into the "UPS" position.