What causes String Reverse Connection on Huawei SUN2000-10KTL-M2?
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.
What to do if Huawei Inverter shows Grid Loss?
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.
How to fix Low Insulation Resistance on Huawei SUN2000-10KTL-M2?
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.
How to troubleshoot Abnormal PV Module Configuration on Huawei SUN2000-10KTL-M2?
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.
Why does my Huawei SUN2000-10KTL-M2 display Output Overcurrent?
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.
What does Abnormal Residual Current mean on Huawei SUN2000-10KTL-M2?
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.
What does Output DC Component Overhigh mean on my Huawei Inverter and how to resolve it?
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.
What causes Transient AC Overvoltage on a Huawei SUN2000-10KTL-M2 Inverter and how can I fix it?
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.
Why is my Huawei Inverter showing Output DC Component Overhigh?
If your Huawei Inverter is showing an 'Output DC Component Overhigh' error, it means the DC component in the grid current exceeds the upper threshold. The inverter monitors its external working conditions in real time and will automatically recover after the fault is rectified. If the alarm occurs frequently, contact your dealer or Huawei technical support.
What causes String Current Backfeed on a Huawei SUN2000-10KTL-M2 Inverter and how to resolve it?
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.
Details safety precautions related to personal well-being during installation and operation.
Covers precautions and hazards related to electrical connections and operations.
Outlines conditions and locations for safe installation and operation, avoiding hazardous environments.
Guides on selecting an appropriate location considering environmental, structural, and spacing requirements.
Lists critical safety precautions for making electrical connections to the SUN2000.
Details the procedure and precautions for connecting the protective earth (PE) cable.
Explains how to connect the AC output power cable to the inverter for grid connection.
Provides instructions and safety warnings for connecting the DC input power cables from PV strings.
Lists items to check before powering on the system for commissioning.
Provides the procedure for safely powering on the SUN2000 system.
Covers app download, account registration, plant setup, optimizer layout, and disconnection detection.
Provides common alarms, their causes, and troubleshooting suggestions for resolving issues.
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