Sungrow SG125HV-30, User Manual

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8 Troubleshooting and Maintenance User Manual
66
Fault
code
Description Check method
070 Fan alarm
1. Check whether the fans operate normally
and are blocked by sundries. If they are
blocked, clear the sundries.
2. If a fan does not operate normally, stop and
disconnect the inverter to replace the fan.
071
AC-side SPD
alarm
Check the SPD, and replace it if necessary.
076 Device anomaly
Wait for the inverter to return to normal.
Disconnect the AC and DC switches, and
reconnect the AC and DC switches 15
minutes later to restart the inverter.
If the fault still exists, contact Sungrow
Service.
078-081 PVx abnormal
1. Check if the x
th
PV string needs to be
connected.
If not, ignore the alarm; and
If so, check the connection status and
make sure it is connected reliably.
2. Check if the xth DC fuse is damaged. If
so, replace the fuse.
3.If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
*The code 078 to code 081 are corresponding
to PV 1 to PV 4 respectively.
087
Electric arc
detection module
abnormal
The inverter can operate normally.
1. Check whether the related cable
connection and terminals are abnormal,
and
check whether the ambient
environment is abnormal. If so, remove the
corresponding abnormity.
2. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.