What to do if my Axpert KING 3KVA Inverter shows a 09 fault?
If your Axpert Inverter displays a 09 fault, it indicates that the DC-DC module is damaged. You can repair the main board or replace it directly.
What to do if my Axpert KING 3KVA shows a 56 fault?
If your Axpert Inverter displays a 56 fault, it means the wire connection or fuse was burnt. You can repair the main board or replace it directly.
General| Model | Axpert KING 3KVA |
|---|---|
| Output Voltage | 230 VAC ± 5% |
| Output Voltage Waveform | Pure Sine Wave |
| Max. PV Array Power | 4000W |
| Max. Charging Current | 80A |
| Cooling | Forced Air Cooling |
| Communication Interface | RS232, USB |
| Transfer Time | 10ms |
| Charging Current | 30A |
| Frequency Range | 50Hz/60Hz |
| Efficiency | 93% |
| Protections | Overload, Short Circuit, Battery Under Voltage |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -15°C - 60°C |
| Humidity | 5% to 95% (Non-condensing) |
| Battery Voltage | 48VDC |
This manual is used as a checking and repairing guide for 3KVA/5KVA-230V model. It assumes basic electrical knowledge.
Explains the inverter's topology, combining solar charger, charger, discharger, and inverter functions.
This section details different inverter models and their parameters, including power rating and solar charger type.
Provides a visual overview of the inverter's internal components and their labels.
Details the main board and control board with component identification.
Guidance on identifying inverter faults through symptoms like no display or fault codes.
Steps to diagnose issues by testing battery, grid charging, and solar charging modes.
Details specific fault codes (e.g., 09, 56) and their possible causes and solutions.
Inverter fails to startup completely. Possible cause: SPS module damaged. Checks and solutions provided.
Bus soft start fails. Possible cause: DC-DC module damaged. Checks and solutions provided.
Battery detection failure. Possible cause: Wire connection or fuse burnt. Checks and solutions provided.
Procedure for setting up a testing system to confirm repair results and inverter reliability.
Guide for checking fuses, capacitors, and power devices like MOSFETs on the battery side of the inverter.
Checking resistors and diodes in the driver circuit for faults like open or short.
Guide for checking DC/DC IGBT power devices on the bus side of the inverter.
Checking BUCK MOSFET and Diode Q32/D13 for faults like short or explosion.
Checking INV&PFC IGBT power devices (QB2/QD2/QA1/QC1/QD4/QD3) for faults.
Checking power devices and resistors on the MPPT board for faults like short or explosion.
Procedure for removing the remote communication port module from the inverter.
Instructions on how to safely open the main enclosure of the inverter.
Steps to remove various boards including COMM, CAP, and small boards/fan.
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