SUN2000L-(4.125KTL, 4.95KTL)-JP 
User Manual 
 
Huawei Proprietary and Confidential                                 
Copyright © Huawei Technologies Co., Ltd. 
 
8 System Maintenance 
8.1 Routine Maintenance 
To ensure that the SUN2000L can operate properly for a long term, you are advised to 
perform routine maintenance on it as described in this chapter. 
 
 
Before cleaning the system, connecting cables, and maintaining the grounding reliability, 
power off the system (see 6.3 Powering Off the System for details). 
Table 8-1 Maintenance list 
The heat sinks are free from obstacles or dust. 
 
The SUN2000L is not damaged or deformed. 
 
The SUN2000L operates with no abnormal sound. 
 
All SUN2000L parameters are correctly set. Perform 
this check when the SUN2000L is running. 
 
Cables are securely connected. 
 
Cables are intact, and in particular, the parts touching 
the metallic surface are not scratched. 
 
Unused DC input terminals, COM ports, and ANT 
ports are locked by watertight caps. 
Ground cables are securely connected. 
 
8.2 Troubleshooting 
Alarm severities are defined as follows: