Xtreme Power Conversion Corporation
P90L 6kVA & 10kVA User’s Manual
Page 28
Uninterruptible Power Supply
Fault
04: Bus Unbal
-
ance
• The load is abnormal, so the inter
-
nal positive and negative DC bus
voltages are unbalanced;
• 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 for repair.
Fault
12: Inv Volt
High
• The internal inverter failed, so the
inverter voltage is too high.
• Contact the dealer for repair.
Fault
13: Inv Volt Low • The internal inverter failed, so the
inverter voltage is too low.
• Contact the dealer for repair.
Fault
14: Output
Short
• Short circuit occured on the UPS
output.
• Remove the short circuit.
Fault
1A: NegPower
• UPS output power is negative. It
means there is energy feedback
into the UPS from output. It may
be caused by regenerative load;
or caused by the current control
failure in the parallel system.
• Contact the dealer.
Fault
21: Batt SCR
Short
• The internal battery SCR has failed
(shorted).
• Contact the dealer for repair.
Fault
24: Inv Rly
Short
• The internal inverter relay is stuck
in the shorted position or the SCR
of STS (Static Transfer Switch) is
shorted.
• Contact the dealer for repair.
Fault
35: Para Comm
Fail
• Parallel cable for communication
is not connected in the parallel
system.
• Connect the parallel cable.
Fault
36: OP.I
Unbalance
• The output current is extremely
unbalanced between the paral
-
leled UPSs, there is an error in the
parallel system.
• Contact the dealer for repair.
Fault
41: Over Temp
The internal temperature is too high
and has reached the fault level (shut
-
down):
• The environment is hot;
• The fan is blocked or failed;
• The ventilation is blocked by the
wall or other goods;
• Load is too heavy.
• Make sure the ambient tempera
-
ture not over 40°C;
• Make sure the fan is OK;
• Make sure the ventilation is clean;
• Remove some loads.
Fault
42: CPU Comm
Fail
• Internal communication between
the CPUs failed
• Contact the dealer for repair.
Fault
43: Over load
• Overload time is out of the speci
-
fication and the UPS shut down
automatically.
• Remove excess loads from UPS
output and restart it.