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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.
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