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15
Troubleshooting
Lethal voltages are present inside the PCS when a fault occurs.
• Only qualified personnel can perform the troubleshooting described in this
chapter. Qualified means that the operator has received professional training
on devices troubleshooting.
• Do not perform any troubleshooting other than that specified in this manual.
• Respect all safety instructions during troubleshooting.
Should any questions or doubts arise that are not covered by this manual, please contact us.
If you provide our customer service assistant the following information, it will be of great help
for us to diagnose and solve the problem in your system:
• Type of the PCS
• Serial number of the PCS
• Manufacturer, model and configuration of the battery and other modules connected to
the PCS
• PCS communication solution
• Fault and brief description of the fault phenomenon
• A picture of the fault if necessary
15.1 Fault Checking
If any power output anomaly or charge/discharge anomaly is detected, you may check the
following items before contacting SUNGROW.
• Open-circuit voltage of the storage battery
• State of the emergency stop button
• Grid is connected correctly
• Measurement board communication is normal
15.2 PCS Faults and Corrective Measures
The fault information of the PCS can be viewed on the WEB interface.
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