9 Troubleshooting and Maintenance
User Manual
64
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 whether there is any DC input cable
disconnected. If yes, refer to “10.13.1
PVS
Detect Settings
” to reset the inverter.
3. If the fault still exists, please contact with
SUNGROW.
9.2
Maintenance
9.2.1 Routine Maintenance
Items
Methods
Period
Save data
Save the running data, parameters and log to a
disk or a file.
Refer to the manuals of the data logging devices.
Once a month
General
state of
system
Visual check any damage or deformation of the
inverter.
Check any abnormal noise during the running of
the inverter.
Check each parameter of inverter operation.
Check if the temperature of the housing is normal.
Monitor the system using the thermal imager.
Every 6 months
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.)
Electrical
connection
Check whether cable connections are loose.
Tighten the loose connections.
Check whether there is injury in the cables,
especially the surface in contact with metal.
Check whether the wrap belt of the connection
terminals is strip-off.
Six months after
commissioning
and then once or
twice a year.
