44
LCD WARNING Alarm
Message
Comments Remedy
NOVRAM PROBLEM
ENCOUNTERED
Control had a problem
retrieving setup information
from its non-volatile
memory.
Unit will continue to run with default values. Call for
service.
INT/EXT BATTERY AMP-HR
MISMATCH
A mismatch is detected
between the current drawn
from internal batteries and
current drawn from external
batteries.
Make sure External Battery Breaker on UPS and breakers
on all external battery cabinets are in the on position.
Make sure the correct number of amp-hrs are recorded in
the Selectable Parameters screen (see Set Parameters in
section 5.2 for details). If you have removed or installed
battery cabinets, the external battery amp-hrs value on this
screen must be altered to reflect the change. If the
external battery amp-hrs on this display match your
configuration, you may need new batteries in either the
UPS or external battery cabinets, so call for service.
BATTERY CHARGE IS LOW
Battery charge has dropped
below 20%.
Start turning off your loads in an orderly fashion as the
battery energy in the UPS is nearly exhausted. If utility is
present, but UPS cannot go to it because of some internal
problem, an uninterruptible transfer to ON BYPASS can be
attempted to continue operating the load from the utility.
HIGH TEMPERATURE
DETECTED
A heat sink temperature
higher than 65
°
C or a control
board temperature higher
than 55
°
C was detected.
Check to make sure all 3 fans are exhausting air at the top
of the UPS. The warning will continue to exist until heat
sink temperature drops below 60
°
C and control board is
below 50
°
C. The UPS will continue to operate unless
temperatures rise further, to 75
°
C on the heat sink or 65
°
C
on the control board, at which time the unit will revert to an
over-temperature condition and shut down in 1 minute. If
temperature does not drop, call for service. Shedding less
critical loads may reduce the temperature problem until
service on unit can be performed.
AC BREAKER IS OPEN
AC breaker is in the OFF
position.
Turn on AC breaker. If breaker is in the tripped position,
you must first push the breaker handle all the way off, then
push it to the on position. Note: if a “Shorted AC switch”
diagnostic exists, the control will trip the AC breaker as
soon as you attempt to turn it on.
DC BREAKER IS OPEN
DC breaker is in the OFF
position
Turn on DC breaker. If breaker is in the tripped position,
you must first push the breaker handle all the way off, then
push it to the on position.
UPS IS IN BYPASS MODE
Transfer Switch is in the ON
BYPASS position
Perform repairs or maintenance on UPS quickly and
transfer back to ON UPS mode, as the load is not
protected by the UPS while in this mode.
BATTERY PROBLEM FOUND
DURING LAST TEST
Last completed battery test
found a problem with the
batteries
Check the manual battery test LCD display along with the
Quick and Capacity automatic battery test history displays
to determine which test registered the problem. Read the
test “RESULT” to determine if it issued a “FAIL-
WARNING” or a “FAIL-DIAGNOST”. Call for service if
either FAIL message is observed; however, the “FAIL-
DIAGNOST” requires much more immediate response.
Once the battery charge returns to above 90%, you may
also run a manual battery test to make sure the problem
still exists.
7.3 HISTORICAL DATABASE DISPLAY INFORMATION
The “Power On/Off”, “Shutdown”, “AC Line Fault”, “Overload”, “Batt Test Q”, and “Batt Test C” historical
databases are stored in battery-backed-up memory. This information is preserved even when the UPS
is totally shut down. The information in the database may be viewed by selecting the “View History”
option from the MAIN MENU LCD. Refer to the FRONT PANEL KEYPAD & LCD OPERATION section
of this manual for additional information on accessing the history information.
