How to fix Upgrade Failed or Version Mismatch on Huawei Inverter?
If your Huawei Inverter displays 'Upgrade Failed or Version Mismatch', it indicates that the upgrade process did not complete successfully. You can try performing the upgrade again. If the upgrade fails repeatedly, contact your dealer or Huawei technical support for assistance.
What to do if Huawei Inverter shows String Reverse Connection?
If your Huawei Inverter is showing a 'String Reverse Connection' error, it means the PV string is connected with reversed polarity. To resolve this, wait for the PV string current to drop below 0.5 A, then set the DC SWITCH to OFF, and correct the PV string polarity.
What does Grid Underfrequency mean on a Huawei Inverter?
If you see a 'Grid Underfrequency' error on your Huawei Inverter, it means the power grid frequency is lower than the standard requirement. If it happens occasionally, it could be a temporary grid issue, and the inverter should recover automatically. If the alarm occurs frequently, check if the power grid frequency is within the acceptable range. If it's not, contact your local power operator. If the frequency is fine, you might need to adjust the underfrequency protection threshold using the SmartLogger or NMS, but only with the consent of the local power operator.
Why is my Huawei SUN 2000 showing a Grid Overfrequency error?
If your Huawei Inverter reports 'Grid Overfrequency', it indicates that the power grid frequency is higher than the standard requirement. If this occurs occasionally, it might be a temporary grid issue, and the inverter should recover automatically. However, if the alarm is frequent, check whether the grid frequency is within the acceptable range. If it's not, contact your local power operator. If the frequency is within range, you may need to adjust the overfrequency protection threshold using SmartLogger or NMS, with the consent of the power operator.
What causes Output Overcurrent in Huawei SUN 2000?
If the Huawei Inverter displays 'Output Overcurrent', it's likely due to a sudden drop in grid voltage or a short circuit, causing the inverter's output current to exceed the limit. The inverter will try to correct this automatically. If the alarm occurs frequently, check for a short circuit in the output. If the problem persists, contact your dealer or Huawei technical support.
How to fix High String Input Voltage on Huawei Inverter?
If your Huawei Inverter is showing 'High String Input Voltage', it means the PV array configuration is incorrect. Too many PV modules are connected in series, causing the open-circuit voltage to exceed the inverter's maximum input voltage. To fix this, you should reduce the number of PV modules connected in series until the PV string's open-circuit voltage is within the acceptable range. After correcting the PV array configuration, the alarm should disappear.
What does Grid Undervoltage mean on a Huawei Inverter?
If your Huawei Inverter shows a 'Grid Undervoltage' alarm, it means the grid voltage is too low. This can happen if the voltage falls below the lower threshold, or if low voltage persists longer than specified. If the alarm is occasional, it might be a temporary grid issue, and the inverter should recover automatically. If it happens frequently, check if the grid voltage is within the normal range and contact your local power operator if it's not. If the voltage is normal, you might need to adjust the grid undervoltage protection threshold via the SmartLogger or NMS, with the power operator's consent. Also, check the connection between the AC switch and the output power cable if the problem continues.
Why is my Huawei SUN 2000 showing a Grid Overvoltage error?
A 'Grid Overvoltage' error on your Huawei Inverter indicates that the grid voltage is too high. This could be because the voltage exceeds the upper threshold or has remained high for longer than the permitted duration. First, verify if the grid connection voltage is within the acceptable range. If it's consistently too high, contact your local power operator. If you have permission from the power operator, you can adjust the overvoltage protection threshold. Also, check for peak grid voltage exceeding limits.
What to do if my Huawei Inverter reports a Grid Loss?
If the Huawei Inverter displays a 'Grid Loss' error, it means there's likely a problem with the power grid. The cause may be a power outage, a disconnected AC circuit, or a disabled AC switch. To troubleshoot, first, check the AC voltage. Then, verify that the AC circuit is properly connected and the AC switch is turned on.
Describes the document's scope and objective.
Identifies the target readers for this manual.
Explains the meaning of various safety symbols used.
Details the changes introduced in the current document issue.
Lists modifications made in the previous document version.
Notes the initial release for first office application.
Covers fundamental safety precautions and general requirements for operation.
Specifies the necessary qualifications and training for personnel.
Details critical safety measures for grounding and power connections.
Outlines the conditions for a safe and effective installation environment.
Addresses safety procedures related to physical handling and tools.
Notes on initial parameter setup for safe operation.
Safety guidelines for performing maintenance and replacing components.
Provides a general introduction to the solar inverter's function and purpose.
Describes the physical design, components, and indicators of the inverter.
Explains the meaning and importance of various labels on the device.
Details the operational schematic and working modes of the inverter.
Specifies the conditions and procedures for storing the solar inverter.
Procedures for verifying packaging and contents before installation.
Lists all necessary tools, instruments, and personal protective equipment.
Covers basic requirements and considerations for selecting the installation site.
Step-by-step guide for securely mounting the bracket.
Instructions for physically attaching the solar inverter to the mounting bracket.
General safety warnings and guidelines before making electrical connections.
Details the types, specifications, and preparation of necessary cables.
Instructions for establishing the protective earth (PE) connection.
Procedure for connecting the AC power output cable.
Steps for connecting the DC input power cables from PV strings.
Guide for connecting communication cables for monitoring and control.
A checklist of items to verify before initial system power-up.
Step-by-step instructions for starting the solar inverter system.
Procedure for safely shutting down the solar inverter system.
Outlines the schedule and methods for regular system upkeep.
Provides solutions for common alarms and system issues.
Steps for safely uninstalling the inverter from its mounting.
Instructions on how to properly pack the inverter for transport or storage.
Guidelines for environmentally responsible disposal of the equipment.
Details the efficiency ratings of the solar inverter.
Specifies the electrical input parameters and ranges.
Details the electrical output parameters and ratings.
Lists the various protection mechanisms integrated into the inverter.
Describes the communication interfaces and capabilities.
Summarizes general physical and environmental specifications.
Lists and describes the grid codes supported by the inverter.
Identifies parameters requiring manual reset after factory default restoration.
Provides a glossary of technical terms and abbreviations used in the manual.
General| Type | String Inverter |
|---|---|
| Topology | Transformerless |
| Cooling Method | Natural convection |
| Rated Output Power | 3-10 kW |
| MPPT | 2 |
| Communication | RS485 |
| Output Power | 3-10 kW |
| Output Voltage | 230 V |
| Output Frequency | 50 Hz / 60 Hz |
| MPPT Trackers | 2 |
| Operating Temperature | -25 °C ~ +60 °C |
To Next Page