18
TROUBLE SHOOTING
Problem
LCD/LED/Buzzer
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 and the
wiring are connected 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 at fault.
Check if AC breaker is at fault
and AC wiring is connected
well.
Green LED is flashing.
Insufficient quality of AC
power. (Shore or Generator)
Check if AC wires are too thin
and/or too long.
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.
Temperature of the
components inside converter
is over 120°C.
Check whether the air flow of
the unit is blocked or whether
the ambient temperature is
too high.
Fault code 02
Temperature of component
inside inverter is over 100°C.
Fault code 03
Battery is over-charged.
Return to repair center.
The battery voltage is too
high.
Check if spec and quantity of
batteries meet the
requirements.
Fault code 01
Fan fault
Replace the fan.
Fault code 06/58
Abnormal output (Inverter
voltage is lower than 190Vac
or is higher than 260Vac)
1. Reduce the connected
load.
2. Return it to repair center
Fault code 08/09/53/57
Internal components failed.
Return it to repair center.
Fault code 51
Over current or surge.
Restart the unit. If the error
happens again, please return
it to repair center.
Fault code 52
Bus voltage is too low.
Fault code 55
Output voltage is unbalanced.
Fault code 56
Battery is not connected well
or fuse burnt out.
If the battery is connected
well, please return it to repair
center.
