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10. Trouble Shooting
Problem LCD/LED/Buzzer Possible cause What to do
Unit shuts down
automatically during
start up process
LCD/LED and buzzer will be
active then complete off
The battery voltage is too
low
1.Re-charge battery.
2. Replace battery
No response
after power on
No indication
1.The battery voltage is too
low.
2. Internal fuse tripped
1.Contact repair center
for replacing the fuse.
2. Re-charge battery.
3. Replace battery.
Mains exist but
the unit works in battery
mode
Input voltage is displayed as
‘0’ on the LCD and green
LED is flashing
Input protector is triggered
Check if AC breaker is
turned on and AC wiring
is connected well.
LED is flashing
Insufficient quality of AC
power(grid or generator )
1. Check if AC wires are
too thin and/or too long.
2. Check if generator (if
applied) is working well or
if input voltage range
settin
is correct.
When the unit is turned
on, internal relay is
switched on and off
re
eatedl
LCD display and
LED flashing
Set “Solar First” as the
priority of output source.
Change output source
priority to utility first.
Buzzer beeps
continuously and red LED
is on
Fault code 01 Fan fault Replace the fan
Fault code 02
Internal temperature of
inverter component is over
85°C
Check whether the
environment around the
equipment well ventilated
Fault code 03
The battery voltage is too
high
check if spec and
quantity of batteries are
meet requirements
battery is over charged Return to repair center
Fault code 04
The battery voltage is too
low
1.the battery is dead,
please charge the battery
immediately
2.check the battery for
damage
Fault code 05 Output short circuited
1.Check that the output
cable is connected
2.return to the
maintenance center
Fault code 06/58
Output abnormal
(Inverter voltage range 180-
260VAC)
return to the maintenance
center
Fault code 07
Overload error , the inverter
is overload 110% and
overload time reaches the
upper limit
reduce load
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