Goodwe GW20KLV-MT - User Manual

Questions and Answers

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uharrisAug 17, 2025
What to do if my Goodwe GW20KLV-MT Inverter shows System Failure?
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  Sherri CookAug 17, 2025
  If your Goodwe Inverter is showing a System Failure, here are a few things you can check: 1. First, disconnect the DC switch and take off the DC connector. Then, check the impedance between PV (+) & PV (-) to earth. 2. If the impedance is less than 100 kΩ, check the insulation of the PV string wiring to the earth. 3. If the impedance is larger than 100 kΩ, check AC wiring after taking off the AC connector and measuring the impedance between neutral and PE. If it is larger than 10 kΩ, check AC wiring.
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Brittany HerringAug 20, 2025
What should I do if my Goodwe GW20KLV-MT Inverter has Utility Loss?
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  Donna DuranAug 20, 2025
  If your Goodwe Inverter reports a Utility Loss, follow these steps: 1. Disconnect the DC switch and take off the AC connector. 2. Measure the voltage between line and neutral in the connector to ensure it conforms to the grid-connected specification of the inverter. 3. If it doesn't, check if the distribution switch is connected and the grid is normal. 4. If it does, reconnect the AC connector and DC connector.
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Jessica MacdonaldAug 22, 2025
What to do if Goodwe GW20KLV-MT displays AC Voltage Failure?
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  Steven ChaseAug 22, 2025
  If your Goodwe Inverter displays an AC Voltage Failure, here’s what you can do: 1. Disconnect the DC switch and take off the AC connector. 2. Measure the voltage between line and neutral in the connector to ensure it conforms to the grid-connected specification of the inverter. 3. If it doesn't, check the grid wiring. 4. If it does, connect the AC connector and reconnect the DC switch; the inverter will connect automatically.
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Andrea SchultzAug 25, 2025
What to do if Goodwe Inverter shows Ground I Failure?
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  Jason JimenezAug 26, 2025
  If your Goodwe Inverter shows a Ground I Failure, try the following: 1. Disconnect the DC switch. 2. Check the insulation of the PV string wiring to earth. 3. Reconnect the DC switch again.
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Scott WrightAug 27, 2025
What to do if my Goodwe GW20KLV-MT Inverter has AC Frequency Failure?
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  lbeanAug 28, 2025
  If your Goodwe Inverter is experiencing an AC Frequency Failure, the PV inverter will automatically restart when the frequency returns to normal.
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Elizabeth OconnorAug 30, 2025
What to do if my Goodwe Inverter is not displaying anything?
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  Lauren NashAug 30, 2025
  If your Goodwe Inverter has no display, take these steps: 1. Disconnect the DC switch and take off the DC connector. 2. Measure the voltage of the PV string. 3. Plug in the DC connector and reconnect the DC switch. 4. If the voltage is less than 70 V, check the PV string configuration.
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Erika PhillipsSep 1, 2025
What to do if my Goodwe GW20KLV-MT shows 'Vac Failure'?
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  ricardo16Sep 2, 2025
  If your Goodwe Inverter displays a 'Vac Failure', the inverter will automatically restart within 5 minutes if the grid returns to normal. Also, ensure that the grid voltage conforms to the specifications and that the neutral (N) wire and PE wire are properly connected.
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Lance KnoxSep 4, 2025
What should I do if my Goodwe Inverter displays 'Utility Loss'?
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  mayojoanSep 4, 2025
  If your Goodwe Inverter is showing a 'Utility Loss' error, make sure that it is connected to the grid. Check if the power grid cable is connected and verify the availability of the power grid.
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Lisa BergSep 6, 2025
What does 'Fac Failure' mean on my Goodwe Inverter and how to fix it?
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  Jason BarnesSep 7, 2025
  If your Goodwe Inverter displays 'Fac Failure', it indicates that the grid is not connected. Check the grid connection cables and verify the availability of the grid.
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andrewyoungSep 9, 2025
What to do if Goodwe GW20KLV-MT Inverter shows 'Ground I Failure'?
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  Christina CraigSep 9, 2025
  If your Goodwe Inverter is showing a 'Ground I Failure', it means that the ground current is too high. Unplug the inputs from the PV generator and check the peripheral AC system. After clearing the problem, reconnect the PV panel and check the Inverter status.