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41
Most of the fault and warnings need to be
released by authorized service personnel. Few of
them can be solved by users themselves.
7 T R O U B L E SH O OT I N G
LCD Message
Explanation
Solution
Fault 01:Bus Start Fail
The rectifiers could not start within
specified time due to low DC-bus
voltage.
Turn off UPS and then restart the UPS.
If it fails again, contact service personnel.
Fault 02:Bus Over Volt
DC-bus voltage exceeds the
maximum voltage.
Contact service personnel.
Fault 03:Bus Under Volt
DC-bus voltage is lower than the
minimum value.
Contact service personnel.
Fault 04:Bus Unbalance
DC-bus voltage is not balanced
Contact service personnel.
Fault 05:Bus Volt Vary
DC-bus voltage changes too fast.
Contact service personnel.
Fault 06:PFC Over Current
PFC current is higher than the
maximum current.
Contact service personnel.
Fault 07:Over Temperature
The temperature in UPS is higher
than 85°C. At this time, the UPS is
off.
Check if the ambient temperature is over
specification.
Or contact service personnel.
Fault 08:Batt SCR Short
Battery SCR is short circuited.
Contact service personnel.
Fault 11:Inv Start Fail
Inverter voltage cannot reach
desired voltage within specified
time.
Turn off UPS and then restart it. If it fails
again, contact service personnel.
Fault 12:Inv Volt High
Inverter voltage is too high.
Contact service personnel.
Fault 13:Inv Volt Low
Inverter voltage is too low.
Contact service personnel.
Fault 14:Inv Short R
R phase inverter output is short
circuited
Contact service personnel.
Fault 16:Inv Short T
T phase inverter output is short
circuited
Contact service personnel.
Fault 19:Inv Short TR
T-R inverter output is short circuited
Contact service personnel.
Fault 1A:Nega Power R
R phase inverter output negative
power is beyond the range.
Contact service personnel.
Fault 1C:Nega Power T
T phase inverter Output Negative
Power is beyond the range.
Contact service personnel.
Fault 21:Inv STS Open
Inverter relay or STS is open.
Contact service personnel.
Fault 22:Inv STS Short
Inverter relay or STS is short
circuited.
Contact service personnel.
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7 .3 Trouble shooting table