AccuLine TNplus 1000Lm, User Manual, Page: 32 / 86

-29-
/ The Backup
time is shorter
than expected.
1) The Batteries
are not fully
charged
2) Defect of the
batteries
1) Charge the
batteries until they
are fully charged
2) Change the
batteries or consult
your supplier.
FANF Fan failure Fan abnormal Check if the fan is
operating
HIGH Battery over
voltage
Batteries are over
charged
Automatic transfer to
battery mode; once the
battery voltage is normal
and the mains is normal,
the UPS will
automatically transfer to
line mode again.
bLOW Battery low Battery voltage is
low
When the audible alarm
sounds every second,
the batteries are almost
empty. Turn off all the
supported loads and
contact your supplier for
battery replacement
bOPN Battery open Battery pack is not
connected
correctly
Do the battery test to
confirm.
Check that the battery
bank is connected to the
UPS.
Check that the battery
breaker is turned on.
CHGF Charger failure The charger is
broken
Notify your supplier.
dCHF Digital bigger
charger failure
The charger is
broken
Notify your supplier.
bUSH Bus high UPS internal fault
Notify your supplier.
bUSL Bus low UPS internal fault
Notify your supplier.
bSFT Bus soft start
fail
UPS internal fault
Notify your supplier.