6.4.2 Alarm information
LCD display in alarm mode is as shown below:
MODE
.
'
L I
�
[
N
S
2 2
6vAc
;
B
BYPASS
2
.
3
□
'/AC
I.OM
y SKW
STATUS
R
I.
A
r
L
.
2
•
2
1
n
'-
OUT
,
·
:u
,
\IAC
----+----
Alarm code
Alarm code
Alarm contents
Solutions
X40
X42
X44
X45
X46
Mains phase
sequence error
Parallel software
version is not
compatible
The mains phase sequence is connected
incorrectly, it needs to exchange any two
phases or ensure that the phase difference
is 120
°
.
Update the master control program of each
UPS to the same version (serial port online
programming is available).
Check if the input wiring of UPS is loose and
make sure that the wiring is fastened. Check
Mains default phase if the power distribution breaker is trip or
damaged and make sure that the breaker is
normal and closed.
Mains frequency is
Check if the input frequency of the UPS is
abnormal
Mains zero line is
not connected
within the normal range with a multimeter.
Check if the zero line on the input and output
wiring terminal of the UPS is not connected
or trip and make sure that the zero line is
connected correctly. Check if the power
distribution breaker is trip or damaged and
make sure that the breaker is normal and
closed.
~44~