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TROUBLESHOOTING
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 on-critical loads
Battery voltage is too low
Re-charge battery more than 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
Solar is normal but Solar charger doesn't
work
P.V reverse polarity protection
Re-connect the P.V terminals
Alarm Behavior Table
Fault Description
Line Mode
Backup Mode
Fault
Code
No. of Beeps
AC Output
No. of Beeps
AC Output
Overload 1 (Vou.<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 (Vou2195V; Pout>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
1BP/s
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.