Sungrow SG250HX, User Manual

Page: 96 / 109

86
F Fa au ulltt c co od de e
D De essc crriip pttiio on n
C Ch he ec ckk m me etth ho od d
078-081 PVx abnormal
1. Check if the xth 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.
*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.
088 Electric arc fault
1. Disconnect the DC inputs and check
whether DC cables are damaged, whether
the wiring terminals or fuses are loose or in
poor contact, and whether component parts
are 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 or LCD screen
so that the inverter will recover to be normal.
3. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
089
Electric arc detection
disabled
1. Enable the AFD function through the App
or the LCD screen so that the inverter will
recover to be normal.
2. If the fault is not caused by the foregoing
reasons and still exists, contact SUNGROW.
9 Troubleshooting and Maintenance User Manual