Troubleshooting - Njoy Balder Series User Manual

Balder 2000 / 3000
Step 1. Remove adhesive tapes. Step 2. Connect all battery terminals
by following below chart.
Step 3. Put assembled battery Step 4. Cover the other side of plastic
packs on one side of plastic shell as in the below picture.
shells.
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7

Troubleshooting

Problem Possible cause
The AC input
power is not
connected well.
No indication and alarm even
though the main is normal.
The AC input is
connected to the
UPS output.
The icon and the warning
EPO function is
code EP are flashing on LCD
activated.
display and alarm is sounding
every second.
The icon and the
Line and neutral
warning code SF are flashing
conductors of UPS
on LCD display. Alarm is
input are reversed.
sounding every 2 seconds.
The external or
The icon and and
internal battery
warning code NC are flashing
is incorrectly
on LCD display. Alarm is
connected.
sounding every 2 seconds.
Fault code is shown as 27
Battery voltage
and the icon is lighting
is too high or the
on LCD display and alarm is
charger is fault.
continuously sounding.
Fault code is shown as 28
Battery voltage
and the icon is lighting
is too low or the
on LCD display and alarm is
charger is fault.
continuously sounding.
Solutions
Check if input
power cord is
firmly connected
to the mains.
Plug the AC input
power cord to the
AC input correctly.
Set the circuit in
closed position
to disable EPO
function.
Rotate mains
power socket by
180˚ and then
connect to UPS
system.
Check if all
batteries are
connected well.
Contact service
unit.
Contact service
unit.
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