Trouble Shooting
Rack Online 1-3k UPS User Manual 25
10. Trouble shooting
This section describes checking the UPS’ status. This section also indicates various UPS
symptoms a user may encounter and provides a troubleshooting guide in the event the UPS
develops a problem. Use the following information to determine whether external factors
caused the problem and how to remedy the situation.
10.1 Checking UPS status
It recommended that checking the UPS operation status every six months.
l Check whether the UPS is faulty: Is the Fault Indicator on? Is the UPS sounding an
alarm?
l Check whether the UPS is operating in Bypass mode. Normally, the UPS operates
in Normal Mode. If it is operating in Bypass Mode, stop and contact your local
representative, or Channel Support.
l Check whether the battery is discharging. When the utility input is normal, the
battery should not discharge. If the UPS is operating in Battery Mode, stop and
contact your local representative, or Channel Support.
10.2 Adjust the factors caused the problem
When the fault indicator is on, press FUNC button to see the fault code and warn code. Fault
and warn codes are listed as following:
Code Event Possible cause Solution
7 Warn: Battery not
connected
Battery not connected
Check if battery switch is off or
battery cables are disconnected
10 Warn: EPO Emergency power off Short the EPO terminal 1&2 to
activate EPO
16 Warn: Input
voltage abnormal
Utility is failure /
Input surge protector
opens
If utility is normal but rectifier is not
working, reset input surge protector
18 Warn: Line neutral
wires reversed/PE
not grounded
Input Line and neutral
is reversed
Check the polarity of line wire and
neutral wire
PE wire is not
connected correctly in
UPS
Check if PE on input plug is shorted
with UPS rear panel. If not ,contact
with distributer or service center. If
yes, please check PE wire in input
power socket
20 Warn: Bypass Bypass voltage is out Check if utility power is indeed out of
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