35
7 T R O U B L E SH O OT I N G
Symptom
Possible cause
Remedy
No indication and alarm even though
the mains is normal.
The AC input power is not connected
well.
Check if input power cord firmly
connected to the mains.
The AC input is connected to the UPS
output.
Plug AC input power cord to AC input
correctly.
The icon and flashing on
LCD display and alarm is sounding
every.
The external or internal battery is
incorrectly connected.
Check if all batteries are connected
well.
Fault code is shown as 27 and alarm
is continuously sounding.
Battery voltage is too high or the
charger is faulty.
Contact your dealer.
Fault code is shown as 28 and alarm
is continuously sounding.
Battery voltage is too low or the
charger is faulty.
Contact your dealer.
The icon and flashing on
LCD and alarm is sounding twice
every second.
UPS is overloaded.
Remove excess loads from UPS
output.
UPS is overloaded. Devices connected
to the UPS are fed directly by the
electrical network via the bypass.
Remove excess loads from UPS
output.
After repetitive overloads, the UPS is
locked in the bypass mode.
Connected devices are fed directly
by the mains.
Remove excess loads from UPS
output first. Then shut down the UPS
and restart it.
Fault code is shown as 43 and the
icon is lighting on LCD and
alarm is continuously sounding.
The UPS shut down automatically
because of overload at the UPS
output.
Remove excess loads from UPS
output and restart it.
Fault code is shown as 14 and alarm
is continuously sounding.
The UPS shut down automatically
because short-circuit occurred on
the UPS output.
Check output wiring and if
connected devices are in short-
circuit status.
Fault code is shown as 01, 02, 03, 04,
11, 12, 13, 41 and 45 on LCD and
alarm is continuously sounding.
A UPS internal fault has occurred.
There are two possible results:
1. The load is still supplied, but
directly from AC power via bypass.
2. The load is no longer supplied by
power.
Contact your dealer
Battery backup time is shorter than
nominal value
Batteries are not fully charged
Charge the batteries for at least 5
hours and then check capacity. If the
problem still persists, consult your
dealer.
Batteries defective.
Contact your dealer to replace the
battery.
