29
TROUBLE SHOOTING
Problem
LCD/LED/Buz
zer
Explanation/Possible
cause
What to do
Unit
shuts
down
automatically
during
startup process.
LCD/LEDs and
buzzer will be
active
for
3
seconds
and
then
complete
off.
The battery voltage is too
low
( < 1.91V/Cell)
1. Re-charge battery.
2. Replace battery.
No response after power
on.
No indication.
1. The battery voltage is
far too low. (<1.4V/Cell)
2.
Battery
polarity
is
connected reversed.
1. Check if batteries the wiring are
connected and well.
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 tripped
Check if AC breaker is tripped and AC
wiring is connected well.
Green LED is
flashing.
Insufficient quality of AC
power
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 setting is
correct. (Appliance=>wide)
When the unit is turned on,
internal relay is switched
on and off repeatedly.
LCD
display
and LEDs are
flashing
Battery is disconnected.
Check if battery wires are connected well.
Buzzer beeps continuously
and red LED is on.
Fault code 07
Overload
error.
The
inverter is overload 110%
and time is up.
Reduce the connected load by switching off
some equipment.
Fault code 05
Output short circuited.
Check if wiring is connected well and
remove abnormal load.
Internal temperature of
inverter component is over
90
℃
.
Fault code 02
Check whether the air flow of the unit is
blocked or whether the ambient temperature
is too high.
Fault code 03
Battery is over-charged.
Return to repair center.
The battery voltage is too
high.
Check if spec and quantity of batteries are
meet requirements.
Fault code 01
Fan fault
Replace the fan.
Fault
code
06/58
Output abnormal (Inverter
voltage below than 202Vac
or is higher than 253Vac)
1. Reduce the connected load.
2. Return to repair center
Fault code
Internal components filed.
Return to repair center
