LBS DRAGON POWER 3, User Manual, Page: 50 / 62

User Manual 4Use and Operation
43
www.lbspower.com
Fault phenomenon Possible reason
3. Check if the mains input breaker is disconnected, if yes,
please close the breaker again.
After installing UPS,
connecting with power will fuse
the fuse or cause tripping
operation.
The wiring of UPS input or output is short circuit.
After starting, the LCD display
and output are normal. But once
connecting with load, it will
stop outputting immediately.
1. UPS is overload seriously or the output circuit is short-
circuit. Please reduce load to proper capacity or find the
short-circuit reason. The common reason is that the output
changeover socket short-circuit or the input short-circuit
after UPS damage.
2. The load is not started according to "high power device →
small power device". Restart the UPS, and after the UPS
works steadily, start high power load first, and then start
small power ones successively.
Buzzer long beeps, fault
indicator lights on, UPS works
in bypass mode and inverter
failure.
1. The output is overload. The load is too heavy and beyond
the rated power of the UPS. Please reduce load or select a
UPS with larger power capacity. If it is temporary bypass
caused by impact of load start and recovers automatically, it
still is normal.
2. UPS over-temperature protection. Check if the air inlet and
air outlet of UPS is blocked or the working temperature of
UPS is beyond the allowable range
Usually, UPS works normally.
When power failure, it doesn't
transfer to battery mode or it
transfers to battery mode and
battery under-voltage protection
soon.
1. Battery aging, the battery capacity loss. Please replace
battery.
2. Battery charger fault. At ordinary time, the battery cannot
be charged.
3. Battery wire doesn't connect well or the terminals contact is
bad.
When the load is PC,
everything works normally.
When power failure, UPS
The grounding connection is not so good. The floating voltage
between the neutral wire and the grounding wire is too high.