16
5. TROUBLE SHOOTING
Problem
Possible Cause
Remedial Action
No LCD display
Battery voltage is low
Re-charge the battery and check if
the battery cables are well-
connected
Battery is defective
Replace the batteries
Power button is not pressed
Press and hold the power button
Mains are normal
but works in
backup mode
AC input is absent
Check the connection of AC input
Backup time is
short
Overloading
Disconnect non-critical loads
Battery voltage is too low
Re-charge battery for at least 8
hours
Alarm buzzer
beeps continuously
Inverter entered into fault
mode. The buzzer beeps
continuously for one minute,
and then beeps according to
the table below.
1.
Refer to table below to identify
the fault
2.
Record and report the fault to
service representative for
further assistance
Alarm Behavior Table
Fault Description
Line Mode
Backup Mode
Fault
Code
No. of Beeps AC Output No. of Beeps AC Output
Overload 1 (V
out
<195V)
/
/
0
OFF
0
Output RMS voltage low
/
/
2
OFF
2
Over temperature/Short-circuited
/
/
3
OFF
3
Fan locked
4
ON
4
OFF
4
Battery voltage high
5
ON
/
/
5
Overload 2 (V
out
≧
195V; P
out
﹥
80% rated half-wave load)
6
ON
6
OFF
6
AC output abnormal
/
/
7
OFF
7
Output voltage RMS high
/
/
8
OFF
8
Peak output voltage high
/
/
8
OFF
8
Utility connection error
9
OFF
9
OFF
9
PV current high
1BP/s
ON
1BP/s
ON
11
Solar charger over-temperature
1BP/s
ON
1BP/s
ON
12
Battery voltage high for Solar
charger
1BP/s
ON
1BP/s
OFF
13
PV over-voltage
1BP/s
ON
1BP/s
ON
14
NTC opened
1BP/s
ON
1BP/s
ON
15
Solar charger MOSFETs /Relay
damaged
1BP/s
/
1BP/s
/
16
Note: please contact your service representative in the event the alarm behavior is not included in the table above.
