Huawei SUN2000 Series

Other manuals for Huawei SUN2000 Series

Quick Guide23 pages

Quick Installation Guide12 pages

Questions and Answers

R
Ralph RichardsSep 13, 2025
What to do if Huawei SUN2000 displays 'Transient AC overvoltage'?
- M
  Manuel KramerSep 13, 2025
  If your Huawei Inverter displays 'Transient AC overvoltage': ? If the voltage at the grid connection point is too high, contact the local power operator. ? If you have confirmed that the voltage at the grid connection point exceeds the upper threshold and obtained consent from the local power operator, modify the overvoltage protection thresholds. ? Check whether the peak grid voltage exceeds the upper threshold.
R
Roger ArnoldSep 13, 2025
How to troubleshoot 'Built-in PID operation abnormal' on Huawei Inverter?
- M
  Mr. Craig CabreraSep 13, 2025
  If you encounter a 'Built-in PID operation abnormal' error on your Huawei Inverter: ? If Cause ID = 1: Turn off the AC output switch and DC input switch, wait for a period of time, and then turn on the DC input switch and AC output switch. If the alarm persists, contact your dealer or Huawei technical support. ? If Cause ID = 2: Check the impedance between the PV array output and the ground. If a short circuit occurs or the insulation is insufficient, rectify the fault. If the alarm persists, contact your dealer or Huawei technical support.
G
Gregory AlexanderSep 14, 2025
What to do if Huawei Inverter shows Grid Failure?
- T
  Taylor SanchezSep 14, 2025
  If your Huawei Inverter displays a 'Grid Failure' message, it indicates a problem with the power grid, such as an outage, a disconnected AC circuit, or a tripped AC switch. You should check the AC voltage and verify that the AC circuit is properly connected and the AC switch is on.
T
Teresa NunezSep 14, 2025
Why does Huawei SUN2000 Inverter show Grid Overvoltage?
- K
  Kathleen KeySep 14, 2025
  If the Huawei Inverter displays a 'Grid Overvoltage' alarm, it means the power grid voltage is exceeding the upper threshold or the overvoltage duration is beyond the HVRT specified value. If it occurs occasionally, the grid may be temporarily abnormal and the SUN2000 will recover automatically. If it happens frequently, check if the grid voltage is within the acceptable range. If not, contact the local power operator. If it is, you can modify the grid overvoltage protection threshold using the mobile phone app, SmartLogger, or NMS with the consent of the power operator. Also, check if the peak voltage of the power grid is too high; if the problem persists, contact the power operator.
C
csteeleSep 14, 2025
Why does my Huawei SUN2000 show Grid Undervoltage?
- M
  Madison HoSep 14, 2025
  If the Huawei Inverter displays a 'Grid Undervoltage' alarm, it means the power grid voltage is below the lower threshold or the undervoltage duration exceeds the LVRT specified value. If the alarm occurs occasionally, the grid may be temporarily abnormal and the SUN2000 will recover automatically. 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 undervoltage protection threshold with the consent of the local power operator. If the fault persists, check the connection between the AC switch and the output power cable.
A
Ana RodriguezSep 15, 2025
Why is my Huawei SUN2000 Inverter showing Grid Overfrequency?
- Z
  Zachary RollinsSep 15, 2025
  If the Huawei Inverter displays a 'Grid Overfrequency' alarm, it means the power grid frequency is higher than the standard requirement. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the SUN2000 will recover automatically. If the alarm occurs frequently, check if the grid frequency is within the acceptable range. If not, contact the local power operator. If it is, log in to the mobile phone app, SmartLogger, or NMS to modify the grid overfrequency protection threshold.
P
pearsonbrandiSep 15, 2025
What to do if Huawei Inverter says String Reversed?
- A
  Amber CaseySep 15, 2025
  If the Huawei Inverter shows a 'String Reversed' error, it means that the PV string is connected with reversed polarity. Wait until night when solar irradiance declines and the PV string current drops below 0.5 A. Then, set the DC SWITCH to the OFF position and correct the string polarity.
A
Aaron MirandaSep 15, 2025
Why is Huawei SUN2000 Inverter showing Grid Underfrequency?
- A
  Anthony FernandezSep 15, 2025
  If the Huawei Inverter displays a 'Grid Underfrequency' alarm, it means the power grid frequency is lower than the standard requirement. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the SUN2000 will recover automatically. If the alarm occurs frequently, check if the grid frequency is within the acceptable range. If not, contact the local power operator. If it is, log in to the mobile phone app, SmartLogger, or NMS to modify the grid underfrequency protection threshold.
C
Carrie EvansSep 15, 2025
Why Huawei Inverter shows String Current Backfeed?
- C
  Chelsea VanceSep 15, 2025
  If the Huawei Inverter shows a 'String Current Backfeed' error, it usually means there aren't enough PV modules connected in series, causing a lower end voltage compared to other PV strings. First, check if enough PV modules are connected in series; if not, add more modules. Second, check if the PV string is shaded. Third, verify the open-circuit voltage of the PV string is normal.
T
thomasjohnsonSep 16, 2025
Why does my Huawei Inverter show Unstable Grid Frequency?
- W
  wperrySep 16, 2025
  If the Huawei Inverter displays an 'Unstable Grid Frequency' alarm, it indicates that the power grid frequency change rate does not comply with the local power grid standard. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the SUN2000 will recover automatically. If the alarm occurs frequently, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.

Summary

Safety Information

General Safety Precautions

General safety statements and precautions for equipment operation.

Personnel Safety Requirements

Outlines qualifications and training required for personnel.

Electrical Safety Guidelines

Grounding requirements and general electrical safety precautions.

Installation Guide

Installation Tools and Equipment

Lists tools and PPE needed for installation.

Determining Installation Position

Guidelines for selecting the optimal installation location.

Mounting Bracket Installation

Process of installing the mounting bracket for the inverter.

Installing the Solar Inverter

Step-by-step guide to safely install the solar inverter.

Electrical Connections

Connection Safety Precautions

Essential safety precautions before making electrical connections.

Connecting DC Input Power Cables

Procedure for connecting DC input power cables.

Connecting AC Output Power Cable

Procedure for connecting the AC output power cable.

Commissioning and Operation

Pre-Power-on Checks

Acceptance criteria to verify before powering on the inverter.

Powering On the SUN2000

Procedure and precautions for powering on the inverter.

SUN2000 App Operations

Using the SUN2000 mobile app for inverter management.

Maintenance and Troubleshooting

Shutdown and Power-Off Procedures

Procedures for safely shutting down and powering off the inverter.

Troubleshooting Common Alarms

Common alarms, causes, and troubleshooting measures.

Fan Replacement Guide

Instructions for replacing a faulty fan unit.

Technical Specifications

Input Electrical Specifications

Lists input voltage, current, and MPPT specifications.

Output Electrical Specifications

Lists output power, voltage, current, and frequency.

Huawei SUN2000 Series Specifications

General

Max Efficiency	98.6%
MPPT Efficiency	99.9%
Protection Rating	IP65
Max. DC Voltage	1100 V
Rated AC Frequency	50 Hz / 60 Hz
Rated Power	3kW - 10kW
Operating Temperature Range	-25 °C ~ +60 °C
Communication	RS485
Rated AC Power	3kW - 10kW
Power Factor Adjustment Range	0.8 leading to 0.8 lagging
Total Harmonic Distortion (THD)	≤ 3%
Protection	DC reverse polarity
Cooling	Natural convection
DC Connection	MC4