22
Alarm type
Code Possible
cause
Remedy
Warning 3F
Parallel communication cable loosen
or incorrect parallel operation.
1) For parallel system, please make
sure parallel communication cable
connected tightly and also check if the
“parallel information”
in LCD
is ok.
Then, it’s ok to turn on UPS after
removing warning message by pressing
‘UP’ and ‘DOWN’ button together.
Otherwise, please do not try to turn on
UPS and contact your dealer for help;
2) For single UPS (no communication
cable and no parallel output cable
connected with others as well),
customer can ignore this warning
message and remove it by pressing ‘UP’
and ‘DOWN’ button. Simply turn on UPS
for continuous operation.
Fault
01
The internal converter failed, so the
DC bus voltage could not be boosted
correctly.
Contact the dealer for repair
Fault
02
1) The mains input or load transient
current cause the DC bus voltage
too high.
2) The internal converter failed.
1) Shut down and restart the UPS to
see if it happens again. If the
problem still persists, please contact
the dealer for repair.
2) Contact the dealer for repair.
Fault
03
The internal converter fails, so the DC
bus voltage is too low.
Contact the dealer for repair.
Fault
04
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
The internal inverter fails, so the
inverter voltage could not start up
correctly.
Contact the dealer for repair.
Fault
12
The internal inverter fails, so the
inverter voltage is too high.
Contact the dealer for repair.
Fault
13
The internal inverter fails, so the
inverter voltage is too low.
Contact the dealer for repair.
Fault
14
Short circuit occurs on the UPS
output.
Remove short circuited output/situation.
If the problem still persists, please
contact the dealer for repair.
Fault
1A
UPS output power is negative. It
means there is energy feedback into
the UPS from output. It may be
caused by regenerative load or the
current control failure in the parallel
system.
Contact the dealer.
Fault
21
The internal battery SCR failed and
short circuited.
Contact the dealer for repair.
