Goodwe NS/DNS Fault Codes and Error Messages

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Goodwe NS/DNS Fault Codes and Error messages are found in the Table below.

For further information on troubleshooting the Goodwe NS/DNS range of solar inverters check out the Goodwe NS/DNS solar inverter manual here.

 

Display
Troubleshooting
System FailureIsolation Fail
  1. Disconnect DC switch, take off DC connector and check the impedance between PV (+) & PV (-) to earth
  2. If the impedance is less than 100 k Ohm, please check the insulation of PV string wiring to earth.
  3. If the impedance is greater than 100 k Ohm, please contact your solar power system installer.
  4. Take off the AC connector, measure the impedance between neutral and PE. If it is higher than 10 k Ohm, please check AC wiring.
System FailureGround I Fail
  1. Disconnect the DC switch and check the insulation of PV sting wiring to earth.
  2. Reconnect the DC switch
  3. If the problem still exists, please contact your solar power system installer.
System FailureVac Fail
  1. Disconnect the DC switch and take off the AC isolator. Measure the voltage between line and neutral in the connector, making sure that it conforms to the grid-connected specification of the inverter.
  2. If it doesn’t conform, please check grid wiring.
  3. If it does conform, please connect the AC connector and reconnect DC switch. An inverter will reconnect to the grid automatically. If the problem still exists please contact your solar power system installer.
System FailureFac Fail
  1. The PV inverter will automatically restart if the grid frequency returns to normal.
  2. If the problem still exists when the grid frequency returns to normal please contact your solar power system installer.
System FailureUtility Loss
  1. Disconnect the DC switch. Take off the AC connector and measure the voltage between the line and neutral connector. Make sure it conforms to the grid-connected specifications of the inverter.
  2. If it does not, please check if the Solar Supply Main Switch and Inverter AC Isolator (if present) are on and that the grid is normal.
  3. If it does, reconnect the AC connector and DC connectors. If the problem still exists please contact your solar power system installer.
System FailurePV Over Voltage
  1. Disconnect the DC switch and check the PV string voltage. Making sure it does not exceed the input voltage in the inverter’s specification.
  2. If it does exceed the inverter’s input voltage please reconfigure the PV panel string.
  3. If the problem still exists please contact your solar power system installer.
System FailureOver Temperature
  1. Please check that the installation position conforms to the inverter installation guidelines.
  2. Try to lower the surrounding temperature.
  3. Move the inverter to vents or alter the installation position.
  4. If the problem still exists please contact your solar power system installer.
Inverter FailureRelay-Check Fail
  1. Disconnect the DC connectors.
  2. Reconnected the DC connectors
  3. If the problem still exists please contact your solar power system installer.
DCI High
EEPROM R/W Fail
SPI Fail
DC Bus High
GFCI Fail
System FailureNo Display
  1. Disconnect the DC switch, unplug the DC connectors and measure the voltage of the DC string.
  2. Plugin the DC connectors and reconnect the DC switch.
  3. If the voltage is less than 70V please check the PV string configuration.
  4. If the voltage is higher than 125V and still there is no display please contact your solar power system installer.
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