7.2 Troubleshooting
No power input, or the
switch on the bottom of
the unit is not switched on.
Check whether the battery air circuit-
breaker or PV air circuit-breaker is turned
on. Check if the switch is "ON". Press any
button on the screen to exit the screen
sleep mode.
The battery voltage is
lower than the value set in
parameter [14].
Charge the battery and wait until the
battery voltage is higher than the value set
in parameter [14].
The battery is not
connected, or the BMS is
in discharge protection
state.
Check that the battery is reliably
connected. Check that the battery circuit-
breaker is off. Ensure that the BMS is able
to communicate properly.
The battery voltage is
lower than the value set in
parameter [12].
Manual reset: Switch off and restart.
Automatic reset: Charge the battery so
that the battery voltage is higher than the
value set in parameter item [35].
Battery over-voltage
when charging
Battery is in over-voltage
condition.
Manually power off and restart.
Check to see if the battery voltage
exceeds the limit. If it exceeds, the battery
needs to be discharged until the voltage is
below the battery over-voltage recovery
point.
Bypass over-load
(software detection)
Bypass output power or
output current over-load
for a period of time.
Reduce the load power and restart the
device. Please refer to item 11 of the
protection function for more details.
Inverter over-
load(software
detection)
Inverter output power or
output current over-load
for a period of time.
Heat sink of PV input
over-temperature
(software detection）
Heat sink of PV input
temperature exceeds 90℃
for 3s.
Normal charging and discharging is
resumed when the temperature of the
heat sink cools below the over-
temperature recovery temperature.
Heat sink of inverter
output over-
temperature (software
detection)
Heat sink of inverter output
temperature exceeds 90℃
for 3s.
Hardware detects fan
failure.
Manually toggle the fan after powering off
the machine to check for foreign matter
blockage.
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