LBS DRAGON POWER 3, User Manual, Page: 53 / 62

4Use and Operation User Manual
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LCD fault symbol Buzzer status Meaning
Battery energy bars all
flicker
Slow beep (Alarm
once about every
2.0s)
Battery voltage is too high. Please check if battery or
charger fault.
Battery energy bars all
off, the outline border
flicker
Rapid beep
(Alarm once about
every 0.2s)
Battery is about to run out. Please pay attention to
protect the load and save the data of PC.
4.8.2 Fault Status
UPS fault includes: EPO protection, work mode and actual wiring mismatching protection, mains phase
sequence abnormal fault, maintenance bypass fault, UPSDC bus voltage fault, UPS IGBT over-
temperature fault, UPS fan fault (including fan blocked, fan damage etc.), UPS output fault (including
output overload protection, output short-circuit etc.), UPS battery fault (including battery over-voltage/
under-voltage protection etc.), UPS parameter mismatching fault, UPS parallel wire fault, UPS inner
power fault, charger fault (charging over-temperature, charging short-circuit or charging fuse fault),
bypass fault, parallel communication abnormal, inner communication abnormal, inverter fault etc.
Corresponding LCD display of each fault is as shown in2032624074.26.264318872 . .
Actual LCD display and corresponding description
Fault info Fault description LCD display
EPO Emergency power off protection (EPO)
P/N
I/O
ERR
Work mode and actual wiring mismatching
protection
(Phase/number
Input/output
error)
SEQ
Mains phase sequence abnormal fault
(Sequence)
BMD
Maintenance bypass fault (Bypass Maintain
Detection)
BUS DC bus fault (BUS)