Trouble Shooting
True Online 1-3k UPS User Manual
17
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 or weak
battery
Battery not connected
or weak battery
Check
battery
connections
or
replace the batteries
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
