Trouble Shooting
Seq.
Items
Positive bus over
32
16
voltage
Negative bus over
33
1
voltage
34
2
Fan Fault
35
3
Reserved
36
4
Reserved
Positive
37
5
under voltage
Negative
38
6
under voltage
39
7
Battery reversed
A2
40
8
Reserved
41
9
Reserved
42
10
Reserved
43
11
Reserved
44
12
Reserved
Battery
45
13
temperature
46
14
Reserved
47
15
Reserved
48
16
Reserved
Battery
49
1
low
50
2
Reserved
51
3
Battery EOD
52
A3
4
Reserved
53
5
Reserved
54
6
Reserved
55
7
BYP voltage Fault OK
154
True Online 6-20k UPSUserManual
0
1
Solution
installed.
OK
Fault
UPS requires service
OK
Fault
UPS requires service
OK
Fault
At least one of fans fail.
bus
OK
Fault
UPS requires service
bus
OK
Fault
UPS requires service
Check if the battery wires
OK
Fault
connection is OK
over
Check if environmental temp is
OK
Fault
too high or batteries life is over
voltage
OK
Fault
OK
Fault
Check if bypass input voltage is
Fault
normal