9 Troubleshooting and Maintenance
User Manual
58
Fault
Code
Description
Troubleshooting
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 six 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.
Disconnect the inverter from the grid first and then PV arrays before any
maintenance work.
Lethal voltage still exists in the inverter. Please wait for at least ten
