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Sara KelleySep 23, 2025
How to fix Firmware Upgrade Failed on Huawei Inverter?
- JJerry GordonSep 23, 2025
If your Huawei Inverter displays 'Firmware Upgrade Failed', it indicates that the upgrade process was not completed normally. Upgrade again.
How to fix Firmware Upgrade Failed on Huawei Inverter?
If your Huawei Inverter displays 'Firmware Upgrade Failed', it indicates that the upgrade process was not completed normally. Upgrade again.
What does Frequency Abnormal mean on a Huawei SUN2000-23KTL?
The Huawei Inverter displays a Frequency Abnormal error when the grid's actual frequency is higher or lower than the required value for the local grid. If this alarm occurs accidentally, it's possible there's an issue with the grid. The inverter will automatically revert to normal once the problem is resolved.
How to troubleshoot Low Array Insulation Resistance on Huawei SUN2000-23KTL?
The Huawei Inverter shows a Low Array Insulation Resistance error when the insulation resistance against ground of the PV strings is low, possibly due to a short circuit between PV strings and the ground. Check the insulation resistance against the ground of the PV strings and rectify any short circuit.
What does String 1-6 Reverse mean on Huawei SUN2000-23KTL?
The Huawei Inverter shows 'String 1-6 Reverse' when the cables between PV strings were connected in reverse during installation. Check if the cables between PV strings are correctly connected and reconnect them if necessary.
What causes Flash Fault on a Huawei Inverter?
If your Huawei Inverter displays 'Flash Fault', it could be due to a lack of Flash space or bad blocks in the Flash memory, indicating a device problem. Replace monitor board. If the monitor board and equipment are one, replace the entire monitor equipment.
What does Residual Current Abnormal mean on Huawei SUN2000-23KTL Inverter?
If your Huawei Inverter displays 'Residual Current Abnormal', it indicates that the insulation resistance against the ground at the input side has become lower, causing excessively high residual current. If the fault occurs accidentally, the SUN2000 automatically recovers to the normal operating status after the fault is rectified. If the fault occurs repeatedly and lasts a long time, check the insulation resistance against the ground of PC arrays is excessively low.
How to troubleshoot Low Array Insulation Resistance on a Huawei Inverter?
If your Huawei Inverter displays 'Low Array Insulation Resistance', it means the insulation resistance against the ground for PV arrays is less than the minimum value. You should: 1. Check the insulation resistance against the ground for the outputs of PV arrays. If a short circuit occurs, rectify the fault. 2. If the insulation resistance against the ground is less than the default value in a rainy environment, set the insulation resistance threshold.
What causes Cabinet Over-Temp on a Huawei SUN2000-23KTL?
If your Huawei Inverter displays 'Cabinet Over-Temp', it means the operating temperature of the UNS2000 exceeds the upper limit. Improve ventilation to decrease the temperature.
What to do if Huawei SUN2000-23KTL Firmware Upgrade Failed?
A Firmware Upgrade Failed error on a Huawei Inverter means the upgrade process was incomplete. Upgrade again.
What to check for Electrical Grounding Fault on Huawei SUN2000-23KTL Inverter?
An Electrical Grounding Fault on the Huawei Inverter indicates that the neutral wire or PGND cable is not properly connected to the inverter. Ensure that the neutral wire and PGND cable are correctly connected.
General| Model | SUN2000-23KTL |
|---|---|
| Rated Output Power | 23000 W |
| Max. DC Voltage | 1100 V |
| Maximum DC Input Voltage | 1100 V |
| Start Voltage | 200 V |
| MPPT Efficiency | 99.9% |
| Nominal AC Output Voltage | 400 V |
| Rated AC Voltage | 400 V |
| AC Output Frequency | 50 Hz / 60 Hz |
| Max Efficiency | 98.6% |
| Number of MPPTs | 2 |
| Dimensions (W x H x D) | 600 mm x 470 mm x 210 mm |
| Weight | 30 kg |
| Operating Temperature Range | -25 °C to +60 °C |
| Protection Degree | IP65 |
| Input Voltage Range | 200 V - 1000 V |
| MPPT Voltage Range | 200-1000 V |
| Max. AC Power | 23000 W |
| Protection Class | IP65 |
| Protection Level | IP65 |
Describes the SUN2000 in terms of installation, electrical connections, commissioning, maintenance, and troubleshooting.
Identifies the target users for this document as PV plant operators and qualified electrical personnel.
Defines the safety symbols and their meanings used throughout the document.
Defines qualifications for operating the SUN2000, emphasizing trained electrical technicians.
Details importance of product labels and nameplates for secure operation.
Covers safety during installation, including clearance, environment, and electrical precautions.
Introduces the SUN2000's function, model range, and typical applications.
Describes the physical appearance and dimensions of the SUN2000 from different views.
Defines safety and operational symbols and nameplates used in the manual.
Details the components of the SUN2000 monitoring panel: LCD, indicators, and buttons.
Explains the functional principles and internal design of the SUN2000.
Procedures for checking packing materials and verifying deliverables are intact.
Lists required tools for installation and electrical connections, with specifications.
Guidelines for selecting an appropriate and safe installation location for the SUN2000.
Step-by-step instructions for safely moving the SUN2000, emphasizing two-person lift.
Procedures for securing the SUN2000 to a support structure using its rear panel.
Detailed steps for mounting the SUN2000 onto a wall using expansion bolts.
Instructions for connecting the protection ground (PGND) cables for proper grounding.
Details on connecting the SUN2000 to the AC power distribution frame or grid.
Steps for connecting DC input power cables from PV arrays to the SUN2000.
Guide for connecting USB and RS485 communication cables for data transfer.
Pre-power-on checks to ensure the SUN2000 is installed correctly and safely.
Procedure for turning on the SUN2000 after all electrical connections are complete.
Guide for setting initial system language, time, and power grid standard code.
Overview of the menu structure for navigating the SUN2000's LCD interface.
Details on viewing system operating information, alarm records, and setting user parameters.
Procedure for safely shutting down the SUN2000 before performing maintenance.
Routine maintenance tasks and recommended intervals for ensuring long-term operation.
Identifies common faults and provides measures to troubleshoot and resolve them.
Steps for safely disconnecting and removing the SUN2000 from its installation.
Guidelines for packing the SUN2000 for transport or storage using original or suitable materials.
Procedures for environmentally sound disposal of the SUN2000 according to local regulations.
Details on maximum and European efficiency ratings for different models.
Technical input specifications including MPP voltage range, max input voltage, and current.
Technical output specifications such as rated power, voltage, current, and frequency.
Lists built-in protection features like anti-islanding, overcurrent, and surge arresters.
Information on the display type and available communication interfaces (RS485, USB).
Physical dimensions, weight, operating temperature range, and warranty information.
Lists safety, EMC, and relevant power grid standard certifications.
Details on the product's warranty period, terms, conditions, and user requirements.
Huawei's policies regarding equipment maintenance, replacement, and returns.
Lists exclusions from warranty coverage due to misoperation, incorrect installation, or unauthorized changes.
