User Manual 9 Troubleshooting and Maintenance
61
Fault
Code
Description Troubleshooting
532-547
Reverse polarity warning
of PVS connection.
1. Check the polarity of the PV inputs, if the
polarity is reverse, please reconnect PV strings.
2. If the fault still exists, please contact with
SUNGROW.
548-563
The output current of
the PVS is obviously
abnormal.
1. Check whether the PV array is shielded. If
the PV array is clear and is not shielded, check
whether the PV modules are faulty.
2. Check the DC input cable for disconnection.
If so, reconnect the cable and reset the PVS
function.
3. If the fault still exists, please contact with
SUNGROW.
9.2 Maintenance
9.2.1 Routine Maintenance
Items Methods Period
System
clean
Check the temperature and dust of the inverter.
Clean the inverter enclosure.
Check the humidity and dust of the environment.
Meanwhile check whether the filter function of
the air inlet is ok. Clean the air inlet and outlet,
when necessary.
Six months to a
year (it depends
on the dust
contents in air.)
Fans
Check whether there is crack of the fan blade
Check whether there is any abnormal noise of the
fan.
Clean or replace the fans.
Once a year
Devices
check
Check the fuses and the DC SPD.
Replace the fuse.
Contact Sungrow to order new DC SPDs.
Every 6 months
9.2.2 Maintenance Instruction
Fans’ Maintenance
There are four fans at the side of the inverter for active cooling during running
operation. If the fans are dirty or out of work, the inverter may not be well cooled
down and its efficiency may accordingly decrease. Therefore it is necessary to clean
the dirty fans or replace the broken fans.
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