Emerson Liebert GXT3 Series, User Manual, Page: 38 / 48

Troubleshooting
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7.1.2 Audible Alarm
An audible alarm will be used in conjunction with the visual indicators to indicate to the user a
change in UPS operating status. The audible alarm will enunciate as given in Table 8 .
7.2 Troubleshooting
In the event of an issue with the UPS, refer to Table 9 to determine the cause and solution. If the
issue persists, contact Emerson Channel Support.
Table 8 Audible alarm description
Condition Alarm
Battery discharge half-second beep every 10 seconds
Low battery Two half-second beeps every 5 seconds
UPS fault, load on bypass 1-second beep every 4 seconds
UPS fault, no power to load Continuous
Overload half-second beep every half second
Battery replacement 2-second beep every 60 seconds
Battery loss Continuous
Wiring problem (including line-to-neutral reversal
or a loss of proper grounding for UPS)
Continuous
Bypass reminder 1-second beep every 2 minutes
Table 9 Troubleshooting
Problem Cause Solution
UPS fails to start when the
On/Alarm Silence/Manual
Battery Test button is pressed
UPS is short-circuited or overloaded
Ensure UPS is Off. Disconnect all loads and
ensure nothing is lodged in output receptacles.
Ensure loads are not defective or shorted
internally
Battery indicator is illuminated
UPS not plugged in
UPS is operating from battery mode, ensure
UPS is securely plugged into the wall receptacle
UPS input protection fuse has
blown/opened
UPS is operating from battery mode. Save data
and close applications. Replace UPS input fuse,
then restart UPS
Utility power is out of tolerance
UPS is operating from battery mode. Save data
and close applications. Ensure utility supply
voltage is within acceptable limits for UPS
UPS has reduced battery
backup time
Batteries are not fully charged
Keep UPS plugged in continuously at least 24
hours to recharge batteries
UPS is overloaded
Check load level indicator and reduce the load
on the UPS
Batteries may not be able to hold a
full charge due to age
Replace batteries. Contact your local dealer,
Emerson representative or Emerson Channel
Support for replacement battery kit
Fault and Bypass indicators and
all LED segments of battery
level indicator are illuminated
UPS overloaded or load is faulty
Check load level indicator and remove non-
essential loads. Recalculate the load and reduce
number of loads connected to UPS. Check load
for faults
Fault and Bypass indicators and
diagnostic A indicator are
illuminated
UPS shutdown due to temperature
condition. Load is on bypass power
Ensure UPS is not overloaded, ventilation holes
not blocked, or room ambient temperature is not
excessive. Wait 30 minutes to allow UPS to cool,
then restart UPS. If UPS cannot restart, contact
your local dealer, Emerson representative or
Emerson Channel Support.