12
3-6. Operating Mode Description
Operating mode Description
LCD display
ECO mode
When the input voltage is within voltage
regulated range, UPS will power the output
directly from the mains. ECO is an
abbreviation of Efficiency Corrective Optimizer.
In this mode, when battery is fully charged,
the fan will stop working for energy saving.
Buck mode
when AC is
normal.
When the input voltage is higher than the
voltage regulation range but lower than high
loss point, the buck AVR will be activated.
Boost mode
when AC is
normal.
When the input voltage is lower than the
voltage regulation range but higher than low
loss point, the boost AVR will be activated.
Battery mode
When the input voltage is beyond the
acceptable range or power failure, UPS will
backup power from battery and alarm is
sounding every 10 seconds.
Standby mode
UPS is powered off and no output supply
power, but still can charge batteries.
Fault mode
When a fault occurs, the ERROR icon and the
fault code will be displayed.
3-7. Faults Reference Code
Fault event
Fault code Icon Fault event
Fault code
Icon
Bus start fail
01
x
Inverter output short
14
x
Bus over
02
x
Battery voltage too
high
27
x
Bus under
03
x
Battery voltage too low
28
x
Inverter soft start fail
11
x
Over temperature
41
x
Inverter voltage high
12
x
Over load
43
Inverter voltage Low
13
x
Charger failure
45
x
