Troubleshooting Guide
UPS-Manual
24
EN
6. Troubleshooting Guide
6.1. Troubleshooting
When the UPS malfunctions during operation, you may check the following:
a. Is the input and output wiring correct?
b. Is the input voltage of the Utility within the input window of the UPS?
In case of problems or if symptoms still exist, please carry out the following steps. If the problem
persists, please contact your local distributor for help.
Situation Check
Items
Solution
UPS Red Fault LED
lights up:
Check the error code
shown on the LCD
screen
1.Er05, &
2.Er06, Er10, Er12,
Er28 &
3.EPO
4.Er11
5.Er15
6.Er16, Er27
7. Er21
8.Er24
9.other error code
1.Check to see if the battery connection is
properly done, then re-charge the batteries
for 8 hours to see whether the UPS may
backup normally; otherwise, consult your
local distributor right away.
2. Remove some uncritical load at the UPS
output end. If any damage of the coating of
AC power cord, please replace a new one.
3. Remove the short circuit occurred at the
EPO terminal.
4. Remove the objects blocked on the
ventilation holes.
5. Make sure the UPS is operated normally. If
it is on CVCF mode, you have to turn off and
turn on the UPS again.
6. All of the parameters except ID Number in
the parallel UPS must be same. Please refer
chapter 5.5 to set them again
7. Reconnect the RJ-45 wire or set a UPS
with ID=1.
8. When the UPS is on CVCF mode, it is
prohibited to have bypass input. You have to
turn off the UPS and bypass input and re-start
the UPS.
9. Consult your local distributor for help.
UPS fails to offer
battery backup or its
back up time is shorter
than its calculation.
If the backup time is still too short after 8
hours of charge, please contact your local
distributor for battery replacement.
UPS locks itself and it
can not be turned off.
Please refer to chapter 5.6 to trouble shoot
the problem; otherwise, consult your local
distributor for help.