What to do if Huawei Controller upgrade failed?
If the Huawei Controller displays 'Upgrade failed or version mismatch', it means the upgrade process was not completed successfully. Try performing the upgrade again. If it fails repeatedly, contact your dealer or Huawei technical support.
What does AFCI self-check failure mean on Huawei Controller?
The AFCI self-check failure on your Huawei Controller indicates that the AFCI self-check has failed. Turn off the AC output switch and DC input switch, and then turn them on again after 5 minutes. If the alarm persists, contact your dealer or Huawei technical support.
Why is my Huawei Controller showing a cabinet overtemperature alarm?
Cabinet overtemperature on the Huawei Controller indicates that the SUN2000 is installed in a poorly ventilated area, the ambient temperature is too high, or the SUN2000 is not operating properly. Check the ventilation and ambient temperature at the installation site. If ventilation is poor or the temperature is too high, improve ventilation and heat dissipation. If those are normal, contact your dealer or Huawei technical support.
What does abnormal residual current mean on a Huawei Controller?
An abnormal residual current on your Huawei Controller suggests that the input-to-ground insulation impedance has decreased during operation. If the alarm occurs accidentally, the external power cable may be temporarily abnormal, and the SUN2000 should recover automatically after the fault is rectified. However, if the alarm persists or lasts a long time, check whether the impedance between the PV string and ground is too low.
What to do about grid undervoltage on Huawei Controller?
A grid undervoltage alarm on the Huawei Controller means the grid voltage is below the lower threshold. Here's what you can do: 1. If the alarm is occasional, it might be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check if the grid voltage is within the acceptable range. If not, contact your local power operator. If it is, you can modify the grid undervoltage protection threshold (with the power operator's consent) using the mobile app, SmartLogger, or NMS. 3. If the alarm continues, inspect the connection between the AC circuit breaker and the output power cable.
How to troubleshoot low insulation resistance on Huawei Controller?
Low insulation resistance on your Huawei Controller indicates a short circuit between the PV array and the ground, or that the PV array is in a moist environment with poor insulation to the ground. To address this: 1. Check the impedance between the PV array output and the ground. Rectify any short circuits or insufficient insulation. 2. Check whether the PE cable of the SUN2000 is correctly connected. 3. If the impedance is lower than the specified protection threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set the Insulation resistance protection threshold.
What does abnormal grounding mean on a Huawei Controller?
Abnormal grounding on the Huawei Controller indicates that the neutral wire or PE cable of the inverter is not connected, or the output mode set for the inverter is inconsistent with the cable connection mode. Power off the inverter first (turn off the AC output switch and DC input switch, and wait for a period of time). Then: 1. Check whether the PE cable for the inverter is connected properly. 2. If the inverter is connected to a TN power grid, check whether the neutral wire is properly connected and whether the voltage of the neutral wire to ground is normal. 3. After powering on the inverter, check whether the output mode set for the inverter is consistent with the output cable connection mode.
How do I fix a phase wire short-circuited to PE error on a Huawei Controller?
If the Huawei Controller indicates a phase wire short-circuited to PE, it means the impedance of the output phase wire to PE is low, or the output phase wire is short-circuited to PE. Check the impedance of the output phase wire to PE, locate the position with low impedance, and rectify the fault.
Why is the grid frequency unstable on my Huawei Controller?
An unstable grid frequency alarm on the Huawei Controller indicates the power grid frequency change rate doesn't meet local power grid code requirements. Here's what you can do: 1. If the alarm is occasional, it may be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.
What causes string current backfeed in Huawei Controller?
String current backfeed on your Huawei Controller means the number of PV modules connected in series is insufficient, causing the end voltage to be lower than other strings. Here's how to troubleshoot: 1. Check if the number of PV modules connected in series to this PV string is less than that of other PV strings connected in parallel. If so, wait until the PV string current decreases below 0.5 A, then turn off the DC switch 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 abnormal.
General| Model | SUN2000-3KTL-M1 |
|---|---|
| Type | String Inverter |
| Max. DC Input Voltage | 600 V |
| MPPT Voltage Range | 90 V - 560 V |
| Rated AC Output Power | 3000 W |
| Max. AC Output Power | 3300 W |
| Nominal AC Voltage | 220 V / 230 V / 240 V |
| AC Voltage Range | 180 V - 280 V |
| AC Output Frequency | 50 Hz / 60 Hz |
| Max. Efficiency | 98.6% |
| MPPT Trackers | 2 |
| DC Inputs per MPPT | 1 |
| Max. Input Current per MPPT | 11 A |
| Operating Temperature Range | -25°C to +60°C |
| Cooling Method | Natural Convection |
| Protection Degree | IP65 |
| Max. DC Input Power | 4500 W |
| Communication | RS485 |
| Dimensions (W x H x D) | 365 mm x 365 mm x 156 mm |
Describes the SUN2000 inverter's scope, features, functions, and safety precautions.
Identifies personnel for whom this document is applicable, including installers and users.
Defines the meaning of symbols used in the document, such as Danger, Warning, and Caution.
Provides essential safety statements, warnings, and guidelines for operating and maintaining the equipment safely.
Specifies the necessary qualifications, training, and experience for personnel involved in installation and maintenance.
Outlines critical electrical safety precautions, including grounding, AC/DC power handling, and cable connections.
Defines the necessary environmental conditions for safe and optimal installation and operation of the SUN2000.
Covers safety precautions related to mechanical operations, such as using ladders and handling heavy objects.
Details the procedures and precautions for the initial power-on and parameter setting of the equipment.
Provides safety guidelines for performing maintenance tasks and replacing components on the SUN2000.
Introduces the SUN2000 inverter, its functions, and the different models covered in the document.
Details the physical components and indicators of the SUN2000, including port descriptions and LED indicators.
Explains the various labels and markings on the equipment, such as warning labels and serial number information.
Describes the internal workings of the SUN2000, including circuit diagrams and operating modes.
Guides users on inspecting outer packing materials and package contents before proceeding with the installation.
Lists the essential tools required for the installation of the SUN2000, categorized into installation and PPE tools.
Covers environment and space requirements, including ventilation, material compatibility, and clearance for installation.
Provides instructions and precautions for safely moving the SUN2000 unit from its packaging to the installation location.
Details the procedure for installing the mounting bracket, including wall-mounted and support-mounted methods.
Outlines preliminary steps and component descriptions necessary before making electrical connections.
Explains the procedure for securely connecting the protective earth (PE) cable, including important safety notes.
Details how to connect the AC output power cable, including precautions and stripping requirements.
Provides instructions for connecting DC input power cables, including warnings about voltage and polarity.
Describes the procedure for connecting battery cables, including prerequisites and safety warnings.
Guides on installing different types of Smart Dongles (WLAN-FE and 4G) for communication.
Explains how to connect signal cables, including COM port pin definitions and networking scenarios.
Provides a checklist of items to verify before powering on the SUN2000 for the first time.
Details the step-by-step procedure for powering on the SUN2000, including checking indicators and switches.
Guides on using the FusionSolar app for device commissioning, including downloading, registration, and layout setup.
Explains how to configure various parameters like energy control, AFCI, and IPS checks via the app or system.
Describes how to set up networking scenarios involving SmartLogger for data collection and monitoring.
Details the procedure and safety precautions for safely powering off the SUN2000 unit.
Outlines the recommended schedule and methods for performing routine checks and maintenance on the SUN2000.
Provides a comprehensive list of common faults, their causes, severity, and solutions for diagnosing and fixing issues.
Describes the steps and precautions required to safely remove the SUN2000 from its mounting bracket.
Provides instructions on how to properly pack the SUN2000 unit for storage or transportation.
Gives guidance on the proper disposal of the SUN2000 unit at the end of its service life.
Presents detailed technical data for the SUN2000 inverters, including efficiency, input, and output parameters.
Lists the technical specifications for the optional Smart PV Optimizer, covering its performance and input/output characteristics.
Details how to access the device commissioning interface on the FusionSolar app, with methods for connected and unconnected states.
Explains the steps to establish a WLAN connection to the SUN2000 and log in as an installer user.
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