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Alarm Code:43
mode because of overload
in bypass mode or HE
mode.
Output Short Circuit
Alarm Code:31
Indicates that the UPS has
detected abnormally low
impedance placed on its
output and considers it a
short circuit
Remove all the loads. Turn
off the UPS.
Check if UPS output and
loads is short circuit.
Ensure short circuit is
removed before turning on
again.
Fan Failure
Alarm Code:84
Indicates that the fan could
not work normally.
Check fans of UPS
Heatsink Over
Temperature
Alarm Code: 81
Indicates that the
temperature of heatsink is
too high, UPS will get over
temperature fault soon.
If the UPS transferred to
Bypass mode,
If the condition persists, shut
down the UPS. Clear vents
and remove any heat
sources. Allow the UPS to
cool. Ensure the airflow
around the UPS is not
restricted. Restart the UPS.
Ambient Over
Temperature
Alarm Code:82
Indicates that the ambient
temperature is higher than
the operation temperature
on specification
BUS Over Voltage
Alarm Code:21
Indicates that the UPS get
BUS over voltage fault
because of BUS.
The UPS transfers to Bypass
mode if supporting the load
BUS Under Voltage
Alarm Code:22
Indicates that the UPS get
BUS under voltage fault
The UPS transfers to Bypass
mode if supporting the load
BUS Unbalance
Alarm Code:23
Indicates that the positive
BUS voltage and negative
BUS voltage are too
lopsided to fault
The UPS transfers to Bypass
mode if supporting the load
BUS Short
Alarm Code:24
Indicates that the BUS
voltage decrease very fast
Contact your service
representative
BUS Softstart Fail
Alarm Code:25
Indicates that the BUS could
not soft start successfully
Contact your service
representative
Inv Over Voltage
Alarm Code:32
Indicates that the UPS get
invert over voltage fault
The UPS transfers to Bypass
mode if supporting the load