Huawei SUN2000 Series

Other manuals for Huawei SUN2000 Series

Quick Guide23 pages

Quick Installation Guide12 pages

Questions and Answers

T
Thomas MaySep 16, 2025
What to do for Transient AC Overvoltage on Huawei SUN2000 Inverter?
- J
  James DuarteSep 16, 2025
  If the Huawei Inverter displays a 'Transient AC Overvoltage' alarm, it means the inverter has detected that the phase voltage exceeds the transient AC overvoltage protection threshold. Check if the grid connection voltage exceeds the upper threshold, and if it does, contact the local power operator. If you have confirmed that the grid-tied voltage exceeds the upper threshold and have obtained consent from the local power operator, modify the overvoltage protection threshold using the mobile phone app, SmartLogger, or NMS.
J
Jacqueline WarrenSep 16, 2025
How to resolve Overtemperature on Huawei SUN2000 Inverter?
- A
  Andrea CohenSep 16, 2025
  If the Huawei Inverter is showing an 'Overtemperature' warning, it means the installation location has poor ventilation. Check the ventilation and ambient temperature around the SUN2000. If ventilation is poor or the temperature is too high, improve ventilation and heat dissipation.
I
Isabella MathewsSep 17, 2025
Why does my Huawei SUN2000 show Abnormal Grounding?
- N
  Nicole LambertSep 17, 2025
  If the Huawei Inverter indicates 'Abnormal Grounding', it means the N cable or ground cable is not connected properly. Power off the inverter and check the following: 1. Ensure the PE cable of the SUN2000 is properly connected. 2. If connected to a TN power grid, check if the N cable is properly connected and if the voltage of the N cable to ground is normal. 3. If the output is connected to an isolation transformer, disable Grounding inspection via the mobile phone app, SmartLogger, or NMS.
D
Deborah Foster DVMSep 17, 2025
How to fix Power grid phase wire short-circu it to PE in Huawei SUN2000?
- K
  Kara BlackburnSep 18, 2025
  If the Huawei Inverter shows 'Power grid phase wire short-circu it to PE', it means the impedance of the output phase wire is low or short-circuited to PE. Check the impedance of the output phase wire to PE, locate the position with lower impedance and restore that.
T
Taylor DavisSep 18, 2025
What causes Faulty Power Collector error in Huawei Inverter?
- J
  Julie ChavezSep 18, 2025
  If the Huawei Inverter displays 'Faulty Power Collector', it indicates that the power meter communication is interrupted in grid connection with zero power mode. Check that the power meter settings are based on the actual model. Check that the communications parameters for the power meter are the same as the SUN2000 RS485 parameter settings. Check that the power meter is powered on, and the RS485 cable is connected correctly.
G
Gina ShepherdSep 18, 2025
What to do if Huawei SUN2000 shows DC Arc Fault?
- S
  Sarah WrightSep 18, 2025
  If you're encountering a 'DC Arc Fault' with your Huawei Inverter, it suggests that the PV string power cable is arcing or has a poor connection. To address this, check that the PV string power cable isn't arcing and is securely connected.
K
Kevin RubioSep 18, 2025
How to resolve High String Input Voltage on Huawei SUN2000 Inverter?
- N
  Nathan BarreraSep 18, 2025
  If your Huawei Inverter is showing a 'High String Input Voltage' error, it means that the PV array is not properly configured, and too many PV modules are connected in series, causing the open-circuit voltage to exceed the inverter's maximum operating voltage. To fix this, reduce the number of PV modules connected in series until the PV string's open-circuit voltage is within the acceptable range. Once correctly configured, the alarm should disappear.
L
Linda NelsonSep 18, 2025
What causes String Reverse Connection on Huawei SUN2000 Inverter?
- C
  Carrie FreemanSep 18, 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.
C
Connie PotterSep 19, 2025
Why does my Huawei Inverter display Output Overcurrent?
- J
  Joshua MooreSep 22, 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.
H
Henry LamSep 22, 2025
What to do for String Current Backfeed on Huawei SUN2000?
- M
  Michele DavisSep 22, 2025
  If your Huawei Inverter is showing a 'String Current Backfeed' error, it means that the number of PV modules connected in series to this PV string is insufficient, causing the end voltage to be lower than that of other strings. To resolve this: 1. Check if the number of PV modules connected in series to this PV string is less than the number of PV modules connected in series to the other PV strings connected in parallel with this PV string. If so, wait until the PV string current decreases below 0.5 A, set DC SWITCH to OFF, and adjust the number of PV modules in the PV string. 2. Check if the PV string is shaded. 3. Check if the open-circuit voltage of the PV string is normal.

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