23
4.4
Troubleshooting Chart
If the UPS system does not operate correctly, please solve the problem by using the table below.
Symptom
Possible Cause
Possible Solution
No indication and alarm, even though the
mains supply is normal.
The AC input power is not firmly
connected.
Check if input power cord is 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 the warning code
flash on-screen and alarm is sounding
every 2 seconds.
EPO function is activated.
Set the circuit in closed position to
disable EPO function.
The icons of
, , and the warning
code
flash on-screen. Alarm is
sounding every 2 seconds.
Reversed line and neutral conductors of
UPS input.
Rotate mains power socket by 180°
and then connect to UPS system.
The icons of
,
, and the warning
code
flash on-screen. Alarm is
sounding every 2 seconds.
The external or internal battery is
incorrectly connected.
Check if all batteries are connected
well.
Fault code is shown as 27 on on-screen
and alarm is continuously sounding.
High battery voltage or faulty charger
Contact La Marche Mfg.
Fault code is shown as 28 on-screen and
alarm is continuously sounding.
Low Battery voltage or faulty charger.
Contact La Marche Mfg.
The icons
,
, and the warning
code
flash on-screen. Alarm is
sounding 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 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 49 on-screen and
alarm is continuously sounding.
UPS is over input current.
Remove excess loads from UPS
output.
Fault code is shown as 43 and the icon
is lighting on-screen. 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 on-screen and
alarm is continuously sounding.
The UPS shut down automatically
because short circuit occurs on the UPS
output.
Check output wiring and if
connected devices are in short circuit
status.
Fault code is shown as 01, 02, 03, 11, 12,
13 and 41 on-screen and alarm is
continuously sounding.
A UPS internal fault has occurred. 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 La Marche Mfg.
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 La
Marche Mfg.
Defective Batteries
Contact La Marche Mfg to replace
the battery.
Fault code is shown as 2A on-screen and
alarm is continuously sounding.
The short circuit occurs on the charger
output.
Check if battery wiring of connected
external pack is in short circuit
status.
Fault code is shown as 45 on-screen. At
the same time, alarm is continuously
sounding.
The charger does not have output and
battery voltage is less than 10V/PC.
Contact La Marche Mfg.
