Product manual

Troubleshooting
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9 Troubleshooting
9.1 Troubleshooting
This section contains information and procedures for solving possible problems on SolarRiver series
inverters, and provides troubleshooting tips to identify and solve most problems.
This section will help narrow down the source of any problems which you may encounter. Please read the
following troubleshooting steps.
Contact installer or Samil Power Customer Service for further assistance. Please be prepared to describe
details of the system installation and also provide the model and serial number of the inverter.
Check the warning or fault messages on the System Control Panel or Fault codes on the inverter
information panel. If a message is displayed, record it before doing anything further.
Attempt the solution indicated in Table 7.
If the inverter information panel is not displaying a Fault light during a fault condition, check the
following to make sure that the installation allows proper operation of the unit.
— Is the inverter located in a clean, dry, adequately ventilated place?
— Is the DC Isolator in ON position?
— Are the cables adequately sized and short enough?
— Are the input and output connections and wiring in good condition?
— Are the configurations settings correct for the particular installation?
— Are the display panel and the communications cable properly connected and undamaged?
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Table 7 Troubleshooting tips
Faults Diagnosis and Solutions
Grid Fault
- Wait for some time to allow grid supply to stabilize for inverter to go back
to normal working state.
- Making sure that grid voltage and frequency complies with standards.
- Seek help from installer.
No Utility
PV Over Voltage
- No grid supply.
- Check grid connection like cables , interface, etc.
- Check grid usability.
- Seek help from installer.
- Check the panel’s open-circuit voltage to be less than Max.DC voltage.
- If PV open circuit voltage is higher consider rewiring modules to get voltage
under limits.
DC INJ High
- Wait for a minute to see if DC injection returns to normal..
- If fault persists, contact Samil Power for assistance.
SCI Failure - Disconnect PV +ve and –ve input, and re-connect after a short break.
- If fault persists, contact Samil Power for assistance.
Isolation Fault - Check the impedance between PV (+)、PV (-) and ground.
For SolarRiver 2300TL~SolarRiver 5200TL >1Mohm .
- Contact Samil Power if impedance value is not big enough.
Consistent Fault - Disconnect PV +ve and –ve input, and re-connect after a short break.
- If fault persists, contact Samil Power for assistance.