OnLine Power Battery Backup System - Manual (Page 70)

OLP
Three Phase UPS Systems
8.0 HELP
8-5
Abnormal Description & Checkpoint Solution
DC BUS voltage becomes abnormal
during transferring. DCV value can be
read in LCD menu. Take out the P&P module
2 and make sure the SCR
drive connection is OK.
3P PCB has problem.
Refer to PCB LED
Detecting Guide. Take out
the P&P module 2 and
check the 3P PCB.
LED A4(OTF) in the 3A PCB lights.
Refer to PCB LED
Detecting Guide and
check the 3G PCB.
In P&P modules, the temperature
sensor sockets on 3G/3P PCB and hest
sink are not connected properly.
WARNING LED of FUSE/TEMP still
illuminates.
Take out the P&P module
and connect them
properly.
Phase sequence error of output
transformer. Change the transformer
wiring.
(11)
Transferring
failure
between
reserve and
inverter.
If the abnormal cannot be improved as
the aforesaid solution action has been
taken. Refer to PCB LED
Detecting Guide and
check the 3G and 3P PCB.
The mimic output LED in the front
panel blinks.
Make sure the signal
sockets in 3T PCB are
connected properly.
Fuse has blown in 3T PCB Replace the fuse.
( 1 2 ) P h
a s e
lack when AC
output.
If the abnormal cannot be corrected
after the solution actions have been
taken. Refer to PCB LED
Detecting Guide and
check the 3T PCB.
( 1 3 ) The
mimic battery
LED in the
front panel
blinks.
Batteries become worn out or
damaged. Replace batteries.