16
3-6. Operating Mode Description
Operating mode Description
LCD display
Online mode
When the input voltage is within acceptable
range, UPS will provide pure and stable AC power
to output. The UPS will also charge the battery at
online mode.
ECO mode
Energy saving mode:
When the input voltage is within voltage
regulation range, UPS will bypass voltage to
output for energy saving. The UPS will also
charge the battery at ECO mode.
AECO mode
(Advanced
Efficiency
Corrective
Optimizer)
When the input voltage is within setting range (
±
3%Vo max), UPS will bypass voltage to output
for energy saving. PFC and INVERTER are off at
this mode.
Frequency
Converter mode
When input frequency is within 40 Hz to 70 Hz,
the UPS can be set at a constant output
frequency, 50 Hz or 60 Hz. The UPS will still
charge battery under this mode.
Battery mode
When the input voltage is beyond the acceptable
range or power failure, the UPS will backup
power from battery and alarm is sounding every
5 seconds.
Bypass mode
When input voltage is within acceptable range
but UPS is overload, UPS will enter bypass mode
or bypass mode can be set by front panel. 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 has occurred, 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
Bus over
02
x
Battery voltage too high
27
Bus under
03
x
Battery voltage too low
28
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