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User Manual
4Use and Operation
45
www.lbspower.com
LCD fault symbol
Buzzer status
Meaning
PRL
Long beep
1. The parallel wire drops.
2. The UPS in parallel system fault, such as EPO,
overload.
PWR
Long beep
UPS inner work power fault. If abnormal and cannot
recover automatically, please report it to our company
to maintain.
FAN
Slow beep (alarm
once about every
2.0s)
Fan fault alarm prompting, please check if the fan is
damaged or blocked.
CHG
Slow beep (alarm
once about every
2.0s)
1. Charging over-temperature protection (Please
check if the fan of charge board is invalid)
2. Output of charger protects for output short-circuit.
Slow beep (alarm
once about every
2.0s)
The charging fuse fault, please check is the fuse on
charging board is invalid.
BYP
Slow beep (alarm
once about every
2.0s)
At mains status, the bypass voltage abnormal,
frequency abnormal, phase sequence abnormal, or
mode setting mismatches the wiring. Please check if
the bypass breaker is closed, if the bypass phase
sequence is normal, if the wiring way of bypass
matches the system mode setting.
CAN
Slow beep (alarm
once about every
2.0s)
The
CAN
communication
of
parallel
system
abnormal, please check if the parallel wire is damaged
or there is only one UPS in parallel system works.
SCI
Long beep
UPS inner communication abnormal. Please check if
the inner wiring is abnormal.
INV
Long beep
UPS inverter fault.
Load energy bars all
flicker
Rapid
beep
(Alarm once about
every 0.2s)
Output overload alarm. The output is going to close,
please reduce load.
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