Huawei SUN2000-8K-LC0 - System Power-Off; Troubleshooting

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8.2 System Power-O

Precautions

WARNING

● After the system is powered o, the inverter is still energized and hot, which

may cause electric shocks or burns. Therefore, wait for at least 5 minutes and

wear insulated gloves before working on the inverter.

● Before maintaining the optimizer and PV strings, power o the system by

following the procedure. Otherwise, electric shocks may occur because the PV

strings are energized.

Procedure

Step 1 Send a shutdown command on the app.

Step 2 Set the DC SWITCH to OFF.

Step 3 (Optional) Install the locking screw for the DC SWITCH.

Step 4 Turn o the AC switch between the inverter and the power grid.

Step 5 Turn o the DC switch between the inverter and PV strings.

Step 6 (Optional) Turn o the battery switch between the inverter and the battery.

----End

8.3 Troubleshooting

Alarm severities are dened as follows:

● Major: The inverter shuts down or some functions are abnormal due to a

fault.

● Minor: Some components of the inverter are faulty but the system can still

connect to the grid and generate power.

● Warning: The inverter functions normally, but its output power decreases due

to external factors.

SUN2000-(8K, 10K)-LC0 Series

User Manual 8 System Maintenance

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