11
be shut off automatically.
LED display:
Buzzer sound 4 times and red light blinking
.
LCD display: Buzzer sound 4 times, “AC-
V
” zero.
Short Circuit Protection:
When short circuits occur, no damage to the unit, automatically recovery.
Overload Protection:
a.
120%
-
145% rated power,
B
eep sound lasted about 10seconds
and AC output shut off
b.O
ver 145% rated power,
Beep sound lasted 2seconds and AC output shut off.
Reverse polarity protection: Fuse
When battery terminals are reverse connected, fuse will be burned to protect
Over Temperature Protection:
When inner temperature exceeds 75ºC,
Buzzer sound 5 times
, AC output will automatically
shut off.
6.Troubleshooting
SYMPTOM
POSSIBLE CAUSE
SOLUTIONS
ON/OFF switch is
switched on, LED
does not light,Buzzer
is off.,no AC voltage
There is no voltage at the DC
input Terminals
1.
Check the continuity of the battery input
circuit
2.Check that the battery fuse is intact. Replace
if blown
3
. Check that all connections in the battery
input circuit are tight
Polarity of the input voltage has
been reversed that has blown the
fuses.
Correct the polarity of the input connections
and replace the fuse. If the unit does not work
after replacing the fuse, the unit has been
permanently damaged.
Buzzer sound 1 time.
There is no AC
voltage.
1.
AC output connections loose
2.Short-circuit of AC Output
wiring.
1
.Tighten AC output connections
2.Check AC wiring for short circuit.
Buzzer sound 3times
DC input volt lower than
10V±4%
(12V version)
2
0V±4%
(24V version)
4
0V±4%
(48
V
version)
1
.Check that the battery is fully charged.
Recharge, if low.
2.Check that the battery cables are thick enough
to carry the required current over the required
length. Use thicker cables, if required
3.
Tighten connections of the battery input
circuit.
Buzzer sound 4 times
Higher input DC volt than
15.5V±4%
(12V version),
31V±4%
(
24V version),
62
V±4%
(48
V version)
1.
Check that the voltage at the DC input
terminals is more than
15
.5
V/31V
/62
V DC
.
2.Ensure that the max charging voltage of the
battery charger/alternator/solar
charge
controller is below
15
.5
V/31V/6
2
V
DC
3.
Ensure that an un-regulated solar panel or
wind turbine is not used to charge a battery
System overheating
1.
Check that the fan is working. If not, the fan /
