Maintenance Instruction - Sungrow SG3KTL-EC User Manual

User Manual
Item Method
Clean or replace the fan.
Check the LCD stop and emergency stop
circuit of the system.
Safety Simulate shutdown and check stop signal
function communication.
Check the warning labels, and replace them if
necessary.
Software optimization.
Software
Check the setting of every parameter.

9.2.2 Maintenance Instruction

Disconnect the inverter from the grid first and then PV arrays before any
maintenance work.
Lethal voltage still exists in the inverter. Please wait at least ten minutes and
then perform maintenance work.
Replacing Fan
If there is overheat and abnormal noise, please wait a moment for the fan recovery.
If the abnormal noise still exists after a moment, please contact SUNGROW Service
Dept. to replace the fan.
 Disconnect the inverter from the grid first and then PV arrays before any
maintenance work.
 Fans' maintenance work may only be performed by qualified electricians.
Air Inlet and Outlet Cleaning
Check whether there is anything blocking the air inlet and outlet to maintain good
ventilation.
Clean the air inlet and outlet with soft brush or vacuum cleaner if necessary.
Battery Maintenance
There is a button battery on the inner LCD PCB board. Contact SUNGROW Service
Dept. to replace the battery when it is end of service life.
9 Troubleshooting and Maintenance
Period
Once or twice a year
Once or twice a year
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