Huawei SUN2000-10KTL-M2

Questions and Answers

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Shannon HancockSep 12, 2025
What causes String Reverse Connection on Huawei SUN2000-10KTL-M2?
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  Daniel NguyenSep 12, 2025
  If your Huawei Inverter reports a 'String Reverse Connection' error, it means the PV string polarity is reversed. To correct this, check if the PV string is reversely connected to the SUN2000. If it is, wait until the PV string current decreases below 0.5 A, set the DC SWITCH to OFF, and then adjust the PV string polarity.
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mileschristinaAug 25, 2025
What to do if Huawei Inverter shows Grid Loss?
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  Laura MooreAug 25, 2025
  If your Huawei Inverter indicates a 'Grid Loss' error, it means the power grid might be experiencing an outage, or the AC power cable could be disconnected, or the AC circuit breaker is OFF. To resolve this, first, verify that the AC voltage is normal. Second, ensure that the AC power cable is properly connected and the AC switch is in the ON position.
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Hannah RobinsonAug 25, 2025
How to fix Low Insulation Resistance on Huawei SUN2000-10KTL-M2?
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  michael48Aug 26, 2025
  If your Huawei Inverter displays a 'Low Insulation Resistance' error, it could be due to the PV array being short-circuited to ground or the power cable not being well insulated, especially in a moist environment. Here's what you should do: * Check the impedance between the PV array output and PE, and eliminate any short circuits or points of poor insulation. * Ensure the PE cable for the inverter is correctly connected. * If you're certain the impedance is less than the preset protection threshold in cloudy or rainy conditions, you can log in to the mobile app, SmartLogger, or NMS to reset the insulation impedance protection threshold.
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Steven RodriguezSep 23, 2025
How to troubleshoot Abnormal PV Module Configuration on Huawei SUN2000-10KTL-M2?
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  Alan BowersSep 23, 2025
  If your Huawei Inverter reports 'Abnormal PV Module Configuration,' it means the PV module configuration doesn't meet requirements, or the PV module output is reversely connected or short-circuited. Check whether the total number of PV modules, the number of PV modules in a string, and the number of PV strings meet requirements, and verify that the PV module output isn't reversely connected.
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Leah HendrixSep 12, 2025
Why does my Huawei SUN2000-10KTL-M2 display Output Overcurrent?
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  greenpattySep 12, 2025
  If your Huawei Inverter is showing an 'Output Overcurrent' error, it indicates that the grid voltage has dropped dramatically or the power grid is short-circuited, causing the inverter's transient output current to exceed the upper threshold and triggering protection. The inverter monitors its external working conditions in real time and will automatically recover once the fault is rectified. If the alarm occurs frequently and affects the power production, check whether the output is short-circuited. If the problem continues, contact your dealer or Huawei technical support.
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Christopher RaySep 16, 2025
What does Abnormal Residual Current mean on Huawei SUN2000-10KTL-M2?
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  Diane DyerSep 16, 2025
  If your Huawei Inverter is showing an 'Abnormal Residual Current' error, it indicates that the input-to-ground insulation impedance has decreased during the inverter operation. To address this: 1. If the alarm occurs accidentally, the external power cable may be temporarily abnormal. The inverter will automatically recover once the fault is rectified. 2. If the alarm occurs frequently or persists, check that the impedance between the PV string and ground is not below the lower threshold.
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Tony GordonSep 4, 2025
What does Output DC Component Overhigh mean on my Huawei Inverter and how to resolve it?
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  lorraine15Sep 5, 2025
  If your Huawei Inverter displays an 'Output DC Component Overhigh' error, it indicates that the DC component of the output current exceeds the specified upper threshold. The SUN2000 detects its external working conditions in real time and automatically recovers after the fault is rectified. If the alarm occurs frequently, contact your dealer or Huawei technical support.
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Edward PearsonSep 5, 2025
What causes Transient AC Overvoltage on a Huawei SUN2000-10KTL-M2 Inverter and how can I fix it?
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  kathrynyoungSep 5, 2025
  If your Huawei Inverter reports a 'Transient AC Overvoltage' error, it means the inverter has detected that the phase voltage exceeds the transient AC overvoltage protection threshold. 1. Check if the grid connection voltage exceeds the upper threshold. If yes, contact the local power operator. 2. If you have confirmed that the grid-tied voltage exceeds the upper threshold and have obtained the consent of the local power operator, modify the overvoltage protection threshold through the mobile phone app, SmartLogger, or NMS. 3. Check whether the peak power grid voltage exceeds the upper threshold.
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Jimmy BarnettDec 1, 2025
What does Grid Overvoltage mean on my Huawei SUN2000-10KTL-M2 and how can I fix it?
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  carriewallerDec 1, 2025
  If your Huawei SUN2000 Inverter is showing a 'Grid Overvoltage' error, it means the power grid voltage is beyond the upper threshold or the overvoltage duration exceeds the value specified by HVRT. Here's what you can do: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The SUN2000 automatically recovers after detecting that the power grid becomes normal. 2. If the alarm occurs frequently, check whether the grid voltage is within the acceptable range. If not, contact the local power operator. If yes, log in to the mobile phone app, SmartLogger, or NMS to modify the grid overvoltage protection threshold with the consent of the local power operator. 3. Check whether the peak voltage of the power grid is too high. If the fault persists and cannot be rectifi...
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Arthur FloresAug 29, 2025
What causes String Current Backfeed on a Huawei SUN2000-10KTL-M2 Inverter and how to resolve it?
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  Timothy CookAug 30, 2025
  If your Huawei Inverter reports 'String Current Backfeed,' it means that too few PV modules are connected in series, causing the end voltage to be lower than other PV strings. To resolve this: 1. Check if the number of PV modules connected in series is less than that of other PV strings. If so, wait until the PV string current drops below 0.5 A, set the DC SWITCH to OFF, and adjust the number of PV modules. 2. Check if the PV string is shaded. 3. Check if the open-circuit voltage of the PV string is normal.