SUN2000 (8KTL-28KTL) 
User Manual 
 
Huawei Proprietary and Confidential                                 
Copyright © Huawei Technologies Co., Ltd. 
 
4. Choose USB Expansion, and press  . 
NOTE 
If no USB flash driver is detected, the LCD displays 
a message prompting you to insert the USB flash 
drive. 
5. Select a menu by pressing    and  , 
and press  . 
The menus that can be selected include 
Firmware Upgrade, Config Import, Config 
Export, and Data Export. 
 
If you want to upgrade the firmware, 
perform step 6 only. 
 
If you want to import the configuration 
data, perform step 7 only. 
 
If you want to export the configuration 
data, perform step 8 only. 
 
If you want to export the alarm data, 
performance data, and system log, perform 
step 9 only. 
6. To confirm the Current is correct, press 
. 
NOTICE 
 
Firmware  upgrade  is  allowed  only  when  the 
SUN2000  is  properly  connected  to  the  PV 
arrays (the PV connection indicator is green). 
 
Before  upgrading  the  firmware,  download  the 
upgrade  package  from 
http://support.huawei.com,  decompress  the 
package, and copy the files to the root directory 
of the USB flash drive.