Always
O
n UPS Systems
M0301_N_Series_DM_Manual V1.4 2012-06-12
21
11.0
TROUBLESHOOTING
The following chart of unusual situations includes some possible problems and solutions
occurring under daily operation. If the UPS loses its basic functions, please check the following
items before contacting your local dealer or service center:
1.
Is the UPS connected to the power source?
2.
Does the input voltage match the specification?
When you contact anyone for service, please provide the following information:
1.
UPS model name and serial number.
2.
Date the problem occurred.
3.
Complete description of the problem.
TROUBLESHOOTING CHART
Displayed on LCD
Audible Alarm
Alarm Description
What You Should Do
Output Overload
Two Beeps per
Second
The UPS is overloaded (in
On-Line mode). Your
equipment needs more power
that the UPS can provide.
The UPS operates in bypass.
Shut off the least important
equipment connected to the UPS.
If this solves the overload
problem, the UPS will switch
from bypass back to normal
operation.
Battery Test
No Beeps
The UPS is doing a battery
test.
No action needed. The UPS will
return to normal operation when it
successfully completes the battery
test.
Over-Charge
Constant Beep
Batteries are over-charged.
Turn off protected loads. Turn off
UPS and call local dealer.
Low Battery
2 beeps every 5
seconds
The unit is operating on
Battery Power and will
shutdown soon due to very
low battery voltage
The unit will restart automatically
when acceptable power returns
On-Battery
One beep every 5
seconds
The unit is operating on
Battery Power
Save your data and perform a
controlled shutdown
Charger Failure
Constant Beep
Charger has failed
Phone the local dealer
Over-Temperature Constant
Beep
High ambient Temperature
Make sure the fans and vent holes
are not blocked, and make sure
the ambient surrounding
temperature is not above 40
degree C. If these conditions did
not solve the problem, call your
service representative.
Output Short
Constant Beep
Output short circuit
Call the Local Dealer
High output voltage
Constant Beep
High output voltage
Call the Local Dealer
Low Output voltage
Constant Beep
Low output voltage
Call the Local Dealer
Bus Fault
Two Beeps per
Second
High internal DC bus voltage
Turn off protected loads. Turn off
UPS and call local dealer.
Site wiring fault
One beep per second
Voltage detected between
neutral and ground
UPS mains connector polarity
wrong. Rotate the connector.
UPS installed to mains supply
without ground.
Line abnormal
One beep per second
Wrong AC line backed up
during auto restart
