Explanation / Possible cause
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.
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.
Buzzer beeps
continuously and
red LED is on.
Internal temperature of
component is over 90°C.
Check if the air flow of the
unit is blocked or the
ambient temperature is too
high.
The battery voltage is too high.
Check if spec and quantity
of batteries are meet
requirements.
The battery voltage is too low.
Check if wiring is connected
well and remove abnormal
load.
Output abnormal (Inverter voltage
below than 180Vac or is higher
than 290Vac)
1.
Reduce the connected
load.
2.
Return to repair center
Overload error. The inverter is
overload 101% and time is
up.
Reduce the connected load by
switching off some
equipment.
Solar controller over temperature
Check if the air flow of the
unit is blocked or the ambient
temperature is too high
1. Check the BMS
communication wire to see if
it’s well connected
2. Check the transceiver signal
Restart the unit, if the error
happens again, please return
to repair center.
Check if the PV input voltage
is in the right range
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