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Alpha ESS Co., Ltd.
Page 60 of 69
Your Smart Energy
long time, please contact AlphaESS after-sales team.
Battery absent
1. Check whether battery cables are connected properly
；
2. Check whether the DC Switch is on
；
3. Check whether the BMS communication is normal.
EMS communication
error
Check whether the connection terminal between the EMS
board and the inverter control board is loose
。
UPS overload
Please reduce the loads on the Backup port and restart the
inverter, or wait for the warning to be cleared 5 minutes later.
EPS output short
Disconnect the loads on the Backup port and restart the in-
verter. If the problem is not been solved, please contact Al-
phaESS after-sales team.
Inv HW over current
1. If the warning occurs occasionally, please restart the in-
verter.
2. If this warning occurs frequently or cannot be cleared for a
long time, please contact AlphaESS after-sales team.
Bus under voltage
1. If this warning occurs occasionally
，
please restart the in-
verter.
2. If this warning occurs frequently or cannot be cleared for a
long time, please contact AlphaESS after-sales team.
Battery Over Total
Voltage
If the warning occurs occasionally, check whether it is
cleared three minutes later;
If the warning occurs frequently, please contact AlphaESS af-
ter-sales team.
Battery Under Total
Voltage
Inv over current
1. If this warning occurs occasionally, please restart the in-
verter.
2. If this warning occurs frequently or cannot be cleared for a
long time, please contact AlphaESS after-sales team.
DC HW over current
1. If this warning occurs occasionally, please restart the in-
verter;
2. If this warning occurs frequently or cannot be cleared for a
long time, please contact AlphaESS after-sales team.
Battery Discharge
over current
Please reduce the loads on the Backup port and restart the
inverter, or wait for the warning to be cleared 5 minutes later.
10.2.2
Battery Protection Description
LED Indictor
Protection
Code
LED
Display
Description
Troubleshooting
Green LEDs
flash once
every 3S.
1
Temperature
difference
Wait for automated recovery.
In case the problem is not
recovery for a long time, call for
service.
3
High temperature
Stop discharging and charging
until this code is eliminated and
wait for the temperature to drop.
4
Low-temperature
discharge
Stop discharging until this code is
eliminated and wait for the
temperature to rise.
