20
3-8. Operating Mode/Status Description
LCD display
Operating mode
Description
AC 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 AC mode.
CVCF mode
When input frequency is between
46Hz and 64Hz, 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, UPS will backup power
from battery and alarm will beep
every 4 seconds.
Battery Test
When UPS is in AC mode or
CVCF mode, press “Test” key for
more than 2 seconds. Then, UPS
will beep once and start “Battery
Test”. This operation is used to
check the battery status.
Bypass mode
When input voltage is within
acceptable range and bypass is
enabled, turn off the UPS and it
will enter Bypass mode. Alarm
beeps every two minutes.
Fault status
When fault occurs in UPS, it will
display fault icon and fault code in
LCD panel.
3-9. Fault Code
Fault event
Fault code
Icon
Fault event
Fault code
Icon
Bus start failure
01
None
Battery SCR short
circuited
21 None
Bus over
02
None
Inverter relay short
circuited
24 None
Bus under
03
None
Battery or Charger short
circuited
2A None
Bus unbalance
04
None
Parallel communication
failure
35 None
Inverter soft start failure
11
None
Parallel output current
unbalance
36 None
High Inverter voltage
12
None
Over temperature
41
None
Low Inverter voltage
13
None
CPU communication
failure
42 None
Inverter output short
circuited
14
Overload 43
Negative power fault
1A
None
