Troubleshooting - Njoy Balder 1500 User Manual

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
EP
warning code are
EPO function is
flashing on LCD display
activated.
and alarm is sounding
every second.
The icon and the
Line and neutral
SF
warning code are
conductors of
flashing on LCD display.
UPS input are
Alarm is sounding every 2
reversed.
seconds.
The icon and and
The external or
NC
warning code are
internal battery
flashing on LCD display.
is incorrectly
Alarm is sounding every 2
connected.
seconds.
Fault code is shown as 27 Battery voltage
on LCD display and alarm is too high or the
is continuously sounding. charger is fault.
32
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.
Problem Possible Cause
Fault code is shown as 28 Battery voltage
on LCD display and alarm is too low or the
is continuously sounding. charger is fault.
UPS is
overloaded.
UPS is
overloaded.
Devices
connected to
the UPS are fed
The icon and directly by the
OL
the warning code are
electrical network
flashing on LCD display.
via the Bypass.
Alarm is sounding every
After repetitive
second.
overloads, the
UPS is locked
in the Bypass
mode. Connected
devices are fed
directly by the
mains.
Fault code is shown as 49
UPS is over input
on LCD display and alarm
current.
is continuously sounding.
The UPS
Fault code is shown as 43 shut down
and the icon is lighting automatically
on LCD display. Alarm is because of
continuously sounding. overload at the
UPS output.
The UPS
shut down
Fault code is shown as 14
automatically
on LCD display and alarm
because short
is continuously sounding.
circuit occurs on
the UPS output.
Solutions
Contact service
unit.
Remove excess
loads from UPS
output.
Remove excess
loads from UPS
output first. Then
shut down the
UPS and restart it.
Remove excess
loads from UPS
output.
Remove excess
loads from UPS
output and restart
it.
Check output
wiring and if
connected devices
are in short circuit
status.
33