Niveo Professional NUPS22-6000U - Manual (Page 29)

Fault 04: Bus Unbalance 1) The load is special or abnormal,
so the internal positive and
negative DC bus voltages are
unbalanced.
2) The internal converter failed.
Contact the dealer.
Fault 11: Inv Start Fail The internal inverter failed, so the
inverter voltage could not start up
correctly.
Contact the dealer to repair.
Fault 12: Inv Volt High The internal inverter failed, so the
inverter voltage is too high.
Contact the dealer to repair.
Fault 13: Inv Volt Low The internal inverter failed, so the
inverter voltage is too low.
Contact the dealer to repair.
Fault 14: Output Short Short circuit occurs on the UPS
output.
Remove short circuit.
Fault 1A: NegPower UPS output power is negative. It
means there is energy feedback
into the internal of UPS from
output. It may be caused by
regenerative load or current control
failure in the parallel system.
Contact the dealer.
Fault 21: Batt SCR Short The internal battery SCR is failed
and short.
Contact the dealer to repair.
Fault 24: Inv Rly Short The internal inverter relay is stick to
short or the SCR of STS (Static
Transfer Switch) is short.
Contact the dealer to repair.
Fault 35: Para Comm Fail Parallel cable for communication is
not connected well in the parallel
system.
Connect the parallel cable well.
Fault 36: OP.I Unbalance The output current is extremely
unbalanced between the paralleled
UPSs or there is an error in the
parallel system.
Contact the dealer to repair.
Fault 41: Over Temp The internal temperature is too
high and reach the fault level
(shutdown):
1) Maybe the environment is hot.
2) Maybe the fan is blocked or
failed.
3) Maybe ventilation is blocked by
the wall or other goods.
4) Load is too heavy.
1) Make sure the ambient
temperature not over 40ºC.
2) Make sure the fan is OK.
3) Make sure ventilation is well.
4) Remove some loads if
possible.
Fault 42: CPU Comm Fail Internal communication failure
between CPUs.
Contact the dealer to repair.
Fault 43: Over load Overload time is out of the
specification and the UPS shuts
down automatically.
Remove excess loads from UPS
output and restart it.