Please contact with distributer or
service center.
51 Warn: UPS over
temperature
Environment
temperature is higher
than permitted point,
ventilation is blocked
Please ensure that nothing blocks
ventilation and environmental temp
must be 0~40°C
53 Fault: Fan failure One or more fans are
failure, fan wires are
loosen
Please contact with distributer or
service center
55 Warn: Inverter
overload
Loads are on inverter
and over the capacity
of the UPS
Remove some loads to ensure that
total loads is under the capacity of
the UPS
57 Warn: Inverter
overload timeout
Load is over the
capacity of the UPS
and timeout, UPS will
transfer to bypass
mode if bypass is
available
Remove some loads to under 95%,
UPS will transfer to inverter
automatically
65 Warn: Battery low UPS works in battery
and battery voltage is
low
Recover input power or save data
upon “battery low”
71 Fault: Charger
fault
There is no charger
output.
Please contact with distributer or
service center
72 Warn: input over
current
Abnormal large current
enter in rectifier.
Please contact with distributer or
service center
74 Warn: Manual
shutdown
UPS will shutdown
output or transfer to
bypass mode
/
/ Battery discharge
time diminishes
The battery has not
been fully charged
Charge the battery for more than 10
hours
UPS is overload Check the loads and remove some
devices
Battery aged Replace the batteries. Please
contact with distributer or service
center to obtain replacement
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