8 Maintenance
● Wear personal protective equipment and use dedicated insulated tools to avoid
electric shocks or short circuits.
● Before performing maintenance, power o the equipment, follow the
instructions on the delayed discharge label, and wait for a period of time as
specied to ensure that the equipment is not energized.
8.1 System Power-O
Precautions
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 after system
power-o and put on protective gloves before working on the inverter.
Procedure
Step 1 Send a shutdown command on the app.
Step 2 Turn o the AC switch between the inverter and the power grid.
Step 3 Set the DC SWITCH at the bottom of the inverter to OFF.
Step 4 (Optional) Install the DC switch locking screw.
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 8 Maintenance
Issue 18 (2024-03-10) Copyright © Huawei Technologies Co., Ltd. 80
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