Goodwe GW9.9KAU-DT - User Manual

Other manuals for Goodwe GW9.9KAU-DT

Quick Installation Guide110 pages

Questions and Answers

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samantha41Aug 18, 2025
What to do if my Goodwe Inverter shows 'Utility Loss'?
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  Kaitlyn JohnsonAug 18, 2025
  If your Goodwe Inverter displays a 'Utility Loss' error, it could be due to several reasons. First, check if there is a power failure in the utility grid by checking other electrical devices. Second, ensure that the AC circuit or AC breaker is properly connected. Finally, verify that the phase sequence of the AC cables is correctly connected, and the neutral wire and PE cable are firmly connected.
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Mrs. Alicia BensonAug 20, 2025
How to fix an 'Over Temperature' error on my Goodwe Inverter?
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  Margaret AndersonAug 21, 2025
  If your Goodwe Inverter is showing an 'Over Temperature' error, there are a few things to check: 1. Ensure that the inverter has adequate ventilation and space for heat dissipation. 2. Verify that the ambient temperature is not too high. 3. Confirm that the fans are working correctly and are not blocked.
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Dana ReidAug 23, 2025
What to do if my Goodwe Inverter displays 'Isolation Fail'?
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  Tina FloresAug 23, 2025
  If your Goodwe Inverter is showing an 'Isolation Fail' error, it could be due to: 1. A short circuit to the ground in the PV system. Check the PV input cables for any breaks. 2. A moist environment affecting the PV system's insulation. Ensure the module frames and metal bracket are securely grounded. 3. Also, check that the AC side is properly grounded.
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Dawn McintyreAug 26, 2025
What does 'Vac Fail' mean on my Goodwe GW9.9KAU-DT?
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  rlynnAug 26, 2025
  If your Goodwe Inverter shows 'Vac Fail', it means the utility grid voltage is out of the allowed range. Make sure that the grid voltage is within the allowed range. Also, ensure that the phase sequence of the AC cables are connected correctly, and the neutral wire and PE cable are properly and firmly.
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Sean CampbellAug 27, 2025
What causes 'Fac Fail' on a Goodwe GW9.9KAU-DT Inverter?
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  Matthew HuangAug 27, 2025
  If your Goodwe Inverter shows 'Fac Fail', it indicates that the utility grid frequency is out of the allowed range. Check whether other electrical devices under the same grid connection point is working normally, and whether the main supply is normal. Ensure the grid frequency is within the allowed range and that the phase sequence of the AC cables are connected correctly, and the neutral wire and PE cable are properly and firmly. If the fault happens occasionally, it may be due to instantaneous utility grid frequency change and does not need to be handled.
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Vincent MooreAug 30, 2025
Why is my Goodwe GW9.9KAU-DT Inverter showing 'PV Over Voltage'?
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  Timothy BarrettAug 30, 2025
  If your Goodwe Inverter displays 'PV Over Voltage', it means that too many PV modules are connected in series, causing the open-circuit voltage to exceed the operating voltage. Check whether the PV string input voltage is consistent with the value displayed on the LCD and meets the maximum input voltage requirements.
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Hector DavisSep 1, 2025
What does 'ARC Fault' mean on my Goodwe GW9.9KAU-DT Inverter and how to fix it?
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  Amanda GregorySep 1, 2025
  If your Goodwe Inverter is showing an 'ARC Fault', it could be due to the PV string cables arcing or being in poor contact. Check whether the PV terminals and cables are connected properly. If the fault occurs frequently, contact after-sales service.
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Laura JohnsonSep 3, 2025
What does 'Ground I Fail' mean on my Goodwe GW9.9KAU-DT?
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  Nicholas MackSep 4, 2025
  If your Goodwe Inverter displays 'Ground I Fail', it indicates that the input insulation impedance to the ground is decreasing during operation. Check if the inverter's working environment meets the requirements; for example, high humidity on rainy days can cause this. Also, ensure that the components and the AC side are properly grounded.
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Susan RogersSep 6, 2025
What to do if my Goodwe Inverter displays 'DC inject High'?
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  Dr. Stacy CampbellSep 6, 2025
  If your Goodwe Inverter shows 'DC inject High', it means the DC injection exceeds the allowed range. Check whether the software version is the latest one. Restart the inverter and check whether the inverter can work properly.
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winterspatriciaSep 8, 2025
What does 'DC Bus High' mean on my Goodwe GW9.9KAU-DT?
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  Arthur WardSep 8, 2025
  If your Goodwe Inverter shows 'DC Bus High', it may indicate an internal fault. Ensure that the software version is the latest one. You can also try restarting the inverter to see if it resolves the issue.