Maintenance; Power Off The Inverter; Removing The Inverter; Disposing Of The Inverter - Goodwe SDT Series User Manual

User Manual V1.3-2024-01-25

9 Maintenance

9.1 Power Off the Inverter

• Power off the inverter before operations and maintenance. Otherwise, the inverter may be
damaged or electric shocks may occur.
• Delayed discharge. Wait until the components are discharged after power off.
Step 1 (Optional) Issue a command to the inverter for halting the grid connection.
Step 2 Turn off the AC switch between the inverter and the utility grid.
Step 3 Turn off the DC switch of the inverter.
Step 4 (Optional) Turn off the DC switch between the inverter and the PV string.

9.2 Removing the Inverter

• Make sure that the inverter is powered off.
• Wear proper PPE before any operations.
Step 1 Disconnect all the cables, including DC cables, AC cables, communication cables, the
communication module, and PE cables.
Step 2 Handle or hoist the inverter to take it down from the wall or the bracket.
Step 3 Remove the bracket.
Step 4 Store the inverter properly. If the inverter needs to be used later, ensure that the storage
conditions meet the requirements.

9.3 Disposing of the Inverter

If the inverter cannot work any more, dispose of it according to the local disposal requirements
for electrical equipment waste. Do not dispose of it as household waste.

9.4 Troubleshooting

Perform troubleshooting according to the following methods. Contact the after-sales service if
these methods do not work.
Collect the information below before contacting the after-sales service, so tha the problems can
be solved quickly.
1. Inverter information like serial number, software version, installation date, fault time, fault
frequency, etc.
2. Installation environment, including weather conditions, whether the PV modules are
sheltered or shadowed, etc. It is recommended to provide some photos and videos to assist
in analyzing the problem.
3. Utility grid situation.
DANGER
WARNING
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09 Maintenance