40
Alarm type
LCD display Possible
cause
Remedy
Warning
3F : Para Protect
NOTE : Check the UPS operational
mode (parallel or single) and
the connections. The UPS
may be damaged if the pa-
rallel cable is not securely
connected while the UPS is
in the parallel mode.
Fault
01 : Bus Start Fail The internal converter failed so that Contact the dealer to repair.
the DC bus voltage could not be
boosted to the correct level.
Fault
02 : Bus Over
1) DC bus voltage is too high be-
1) Shut down and restart the system
cause of mains input or load
and observe if the fault reoccurs.
transient current.
2) Contact the dealer for repair.
2) The internal converter failed.
Fault
03 : Bus Under
The internal converter failed so that Contact the dealer to repair.
the DC bus voltage is too low.
Fault
04 : Bus Unbalance 1) The load is abnormal
Contact the dealer.
so that the internal positive and
negative DC bus voltages are
unbalanced.
2) The internal converter failed.
Fault
11 : Inv Start Fail
The internal inverter failed so that
Contact the dealer to repair.
the inverter voltage could not start
up
correctly.
Fault
12 : Inv Volt High The internal inverter failed so that
Contact the dealer to repair.
the inverter voltage is too high.
Fault
13 : Inv Volt Low The internal inverter failed so that
Contact the dealer to repair.
the inverter voltage is too low.
Fault
14 : Output Short
Short circuit occurs on the UPS
Remove the short circuit.
output.