19
3
Operation
Alpha Technologies
LCD Shows
Audible
Alarm *
Description
Action
Output Overload
2 beeps per
second
The UPS is overloaded. It is
operating in Bypass mode.
Shut down loads, starting with the least
important.
Battery Test
No beeps
The UPS is performing a
battery test.
None. The UPS will return to normal
operation when the test is done.
Over-Charge
Constant
beeping
The batteries are
overcharged.
Turn off the loads and the UPS. Contact
Alpha Technologies.
Low Battery
2 beeps
every 5
seconds
The UPS is operating on
battery power and the
batteries are almost
discharged.
The UPS will automatically restart when the
line becomes requalified.
On-Battery
1 beep
every 5
seconds
The UPS is operating on
battery power.
Shutdown the loads.
Charger Failure
Constant
beeping
The charger is faulty.
Contact Alpha Technologies.
Over-Temperature
Constant
beeping
The UPS is over heating.
--Make sure the UPS's fans and vents are
not blocked.
--Make sure the ambient air temperature is
below 40°C.
--If this does not solve the problem, contact
Alpha Technologies.
Output Short
Constant
beeping
The output is short circuited.
Contact Alpha Technologies.
High Output Voltage
Constant
beeping
The output voltage is high.
Contact Alpha Technologies.
Low Output Voltage
Constant
beeping
The output voltage is low.
Contact Alpha Technologies.
Bus Fault
2 beeps per
second
The internal DC bus voltage
is high.
Turn off the loads and the UPS. Contact
Alpha Technologies.
Site Wiring Fault
1 beep per
second
There is voltage between the
line's neutral and ground.
Turn off the loads and the UPS. Correct the
site wiring, then restart the UPS.
Line Abnormal
1 beep per
second
3.5
Troubleshooting
When the fault LED turns on or the audibile alarm is heard, perform troubleshooting as shown in
the table below.
*To turn off the alarm, press any button on the control panel
Figure 3.3
Troubleshooting Table
