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088
Arc fault
1. Disconnect the DC inputs and check whether DC
cables are damaged, whether the wiring terminals
or fuses, if necessary, are loose or in poor contact,
and whether there is PV module burnt. If so, take
corresponding corrective measures.
2. After taking corresponding measures in step 1,
reconnect the DC inputs. Remove the arc fault
through the App, and therefore the inverter will
recover.
3. If the alarm persists, contact SUNGROW.
075
Parallel commu-
nication alarm
1. Check whether the communication cable and
corresponding wiring terminal are abnormal. If so,
take corrective measures to ensure reliable
connection.
2. Reinstall the Smart Energy Meter communica-
tion cable.
3. If the alarm persists, contact SUNGROW.
714
BMS communi-
cation error
716
Battery polarity
reversed
1. Check the battery for polarity correctness, and
correct it if necessary.
2. If the alarm persists, contact SUNGROW.
932–935,
937, 939,
964
Battery alarm
Generally, the battery can automatically recover. In
case the alarm persist for a long time:
1. If the alarm is caused by ambient temperature,
such as over temperature alarm or low tempera-
ture alarm, take measures to change the ambient
temperature, such as improving heat dissipation
conditions.
2. If the fault persists, contact battery manufacturer.
703, 711,
712, 715,
732–737,
739, 832–
836, 839,
844, 864,
866–868,
870
Battery
abnormal
1. In case of abnormal battery voltage, check
whether the battery real-time voltage is abnormal.
If so, contact the battery manufacturer. If not, con-
tact SUNGROW.
2. In case of abnormal battery temperature, take
measures to change the ambient temperature,
such as improving heat dissipation conditions.
3. If the fault persists, contact battery manufacturer.
10 Troubleshooting and Maintenance
User Manual
