V-TAC VT-48280-W2, Instruction Manual, Page: 24 / 25

Table12. Alarm handling
Phenomenon Possible failure Handling method
Red light fl ashing
Cell or ba � ery under voltage
Check: Ensure that the communica � on cable between the
inverter and ba � ery is properly connected. View the ba � ery
data on the inverter display or the inverter APP.
generated the under voltage alarm.
generated the over voltage alarm.
Alarm recover: Under voltage alarm, a � er the ba � ery turn to
charge mode, alarm recover; Over voltage alarm, a � er the
ba � ery turn to discharge mode, alarm recover;
Cell or ambient temperature
over high/low
Check: Ensure that the communica � on cable between the
inverter and ba � ery is properly connected. View the ba � ery
data on the inverter display or the inverter APP.
, the ba � ery undertemperature
alarm is generated.
, the ba � ery overtemperature
alarm is generated.
Alarm recover: When the ambient temperature ranges is from
10 to 35
and the cell temperature reach to the normal
range, the alarm should be automa � cally recover.
Charge or discharge current
overhigh
Check: No visual phenomenon. If no abnormal cell voltage and
temperature, the over-current alarm should be generated.
Alarm recover:
1, A � er the alarm is generated, the current drop and con � nue
for 15 minutes, the alarm should be automa � cally recover.
2, When the discharge current is too large, by charging (No
over-current) can recover the alarm;
3, When the charge current is too large, by discharging (No
over-current) can recover the alarm.
Red light on Ba � ery fault
Check: No visual phenomenon.
Alarm recover: Shut down the ba � ery system, wait for 5
minutes, and restart the ba � ery. Check whether the fault can be
rec �fi ed. If the fault persists, please contact with the technical
support engineers.
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