16
Appendix 1: The table of the fault code
Fault reason
Fault code
BUS voltage fault
00-14
Power soft start fault
15-24
Inverter voltage fault
25-39
Overheat
40-44
Output short circuit
45-49
Overload
50-54
Input NTC fault
55-59
Power fault
60-64
Input FUSE fault
65-69
Other
88
Appendix 2: Table for working status
S/N Working status
LED on Front panel
Alarm beep
Note
Normal
Battery
Bypass
Fault
1
Inverter mode (mains power)
Mains power voltage
●
N
Mains power
high/low voltage
protection, switch to
battery mode
●
●
★
One beep / 4 sec
2
Battery mode
Battery voltage -
normal
●
●
★
One beep / 4 sec
Warning for
abnormal voltage of
battery
●
★
★
One beep / sec
3
Bypass mode
Mains power
–
normal
（
under
Bypass
）
●
★
One beep / 2 mins
Mains power
– high
voltage warning
(under Bypass)
●
★
One beep / 4 sec
Mains power
– low
●
★
One beep / 4 sec
