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UPS has no
internal faults
before turning on
again.
Fail to
transfer to
online
mode
Light
circularly
31
Phase and neutral
conductor at input of
UPS system are
reversed
Rotate mains
power socket by
180° or connect
UPS system.
04/06/07 Input
voltage/frequency/earth
connection abnormal
Check whether
input
voltage/frequency
is abnormal, or
earth connect
correctly.
Battery
LED
indictor
light
circularly
--
0b
Battery voltage is low
When audible
alarm sounding
every second,
battery is almost
empty.
Emergency
supply
period
shorter
than
nominal
value
Batteries not fully
charged
Charge the
batteries until the
Batteries are fully
charged
Output overload
Check the loads
and remove
some non-critical
loads.
Check whether
some loads are
failed.
Battery defect
Change the
batteries or
consult your
dealer.
Bypass
LED
indicator
light
circularly
Light
circularly
08
Bypass abnormal
Check whether
bypass switch is
turn to ON
position.
