Introduction
Thank you for choosing our solar inverter. This user manual will guide you through the setup and operation of the device, and assist with troubleshooting any issues that may arise. Please read this manual carefully before installation and use.
About This Manual
This manual describes the assembly, installation, operation, and troubleshooting of the device. Keep this manual for future reference. It includes safety and installation instructions, as well as information on tools and wiring.
Product Overview
This is a multifunctional inverter that combines inverter, solar charger, and battery charger functions, providing uninterrupted power support. The versatile LCD screen offers customizable and easily accessible operations, such as battery charging current, AC or solar charging priority, and input voltage settings.
Product Components (Figure 1)
- 1. LCD Display
- 2. Status Indicator
- 3. Charging Indicator
- 4. Fault Indicator
- 5. Function Button
- 6. Grounding Terminal
- 7. AC Input Terminal
- 8. AC Output Terminal
- 9. Battery Input Terminal
- 10. PV Input Terminal
- 11. Wi-Fi Port
- 12. On/Off Switch
Installation
I. Preparation
Before installation, check the unit for any damage. The package should contain the solar inverter and the user manual. Remove the bottom cover by unscrewing three screws before connecting any wires.
II. Unit Installation
When choosing an installation location, consider the following:
- Do not install the inverter on flammable building materials.
- Install on a solid surface.
- Install at eye level so the LCD screen is always visible.
- The ambient temperature should be between 0°C and 55°C for optimal performance.
- The recommended installation position is vertically against a wall.
- Ensure adequate space for heat dissipation and cable management.
NOTE: SUITABLE FOR INSTALLATION ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACES ONLY.
Install the unit using three screws (M4 or M5 recommended).
III. Battery Connection
NOTE: An external DC disconnect device or fuse must be installed between the battery and the inverter for safe operation and compliance with regulations. The fuse size should be selected based on the typical current indicated in the table.
WARNING: All wiring work must be performed by qualified personnel.
Use the correct cable, stripping length (L2), and crimping length (L1) as shown in Figure 5 for safe and efficient battery connection.
| Model | Max. Current | Battery Capacity | Cable Size | L1 (mm) | L2 (mm) | Torque Value | |
|---|---|---|---|---|---|---|---|
| 1500W-24 | 70A | 100AH | 6AWG | 13.3 | 3 | 18 | 2~3 Nm |
| 2500W-24 | 100A | 100AH | 4AWG | 21.15 | 3 | 18 | 2~3 Nm |
| Other models | 140A | 100AH | 2AWG | 38 | 3 | 18 | 2~3 Nm |
Battery Connection Steps:
- Strip 18 mm of insulation from the positive and negative wires as recommended.
- Connect all batteries according to the unit's requirements.
- Slide the battery cable onto the inverter's battery terminal and tighten the screws to 2-3 Nm. Ensure correct polarity is maintained for both the battery and the inverter/charger terminals.
WARNING: Risk of electric shock due to high battery voltage.
CAUTION: Do not place anything between the inverter's flat terminals to prevent overheating. Do not apply antioxidant to the terminals before thorough connection.
NOTE: Ensure the positive (+) terminal is connected to the positive (+) terminal and the negative (-) terminal to the negative (-) terminal before making the final DC connection or closing the DC switch.
IV. AC Input/Output Connection
NOTE: Install a separate AC disconnect switch between the inverter and the AC source for safe disconnection during maintenance. The recommended AC disconnect switch rating is 50A.
NOTE: There are two terminal blocks labeled "IN" and "OUT". Do not confuse input and output.
WARNING: All wiring must be performed by qualified personnel.
Use the correct cable size for AC input connections.
| Model | Cross-section | Torque Value |
|---|---|---|
| 1.5KVA | 12AWG | 1.4~1.6Nm |
| 2.5KVA/3.5KVA | 10AWG | 1.4~1.6Nm |
| 5.5KVA | 8 AWG | 1.4~1.6Nm |
AC Input/Output Connection Steps:
- Ensure the DC switch is open before connecting AC input/output.
- Strip 10 mm of insulation from the wires. Shorten the L-phase and N-neutral wires by 3 mm.
- Insert the AC input wires according to the polarity indicated on the terminal block and tighten the terminal screws. Connect the PE protective line first.
- PE → Ground (Yellow-Green)
- L → Line (Brown)
- N → Neutral (Blue)
- Connect the AC output wires similarly, ensuring the PE protective line is connected first.
- PE → Ground (Yellow-Green)
- L → Line (Brown)
- N → Neutral (Blue)
- Ensure all wires are connected correctly.
NOTE: Appliances like air conditioners require a 2-3 minute delay for refrigerant equalization. Power interruptions can damage connected equipment.
V. PV Connection
NOTE: Install a separate DC circuit breaker between the inverter and the PV modules before connecting PV modules.
WARNING: All wiring must be performed by qualified personnel.
Use the correct recommended cable size for photovoltaic module connections.
| Model | Max. Current | Cable Size | Torque |
|---|---|---|---|
| 1.5KVA | 15A | 12 AWG | 1.4~1.6 Nm |
| 2.5KVA | 15A | 12 AWG | 1.4~1.6 Nm |
| 3.5KVA | 15A | 12 AWG | 1.4~1.6 Nm |
| 5.5KVA | 18A | 12 AWG | 1.4~1.6 Nm |
| 6.2KVA | 27A | 12 AWG | 1.4~1.6 Nm |
PV Module Selection:
When selecting PV modules, consider the following parameters:
- The open-circuit voltage (Voc) of the PV modules should not exceed the inverter's maximum open-circuit voltage.
- The open-circuit voltage (Voc) of the photovoltaic modules should be higher than the battery's minimum voltage.
Solar Charging Mode Parameters:
| Inverter Model | Max. PV Array Open Circuit Voltage | PV Array MPPT Voltage Range | Max. PV Input Current |
|---|---|---|---|
| 1.5KW-3.5KW | 500VDC | 30VDC~500VDC | 15A |
| 5.5KVA | 500VDC | 60VDC~500VDC | 18A |
The table below shows recommended module configurations using 450 Wp and 550 Wp photovoltaic modules.
| Solar Input | Number of Panels | Total Input Power | Model |
|---|---|---|---|
| 1 series | 1 | 450W | 1.5KW-5.5KW |
| 2 series | 2 | 900 W | |
| 3 series | 3 | 1,350 W | |
| 4 series | 4 | 1,800 W | |
| 5 series | 5 | 2,250 W | |
| 6 series | 6 | 2,700 W | |
| 7 series | 7 | 3,150 W | |
| 8 series | 8 | 3,600 W | |
| 9 series | 9 | 4,050 W | |
| 10 series | 10 | 4,500 W | |
| 11 series | 11 | 4,950 W | |
| 12 series | 12 | 5,400 W | |
| 6 series and 2 parallel | 12 | 5,400 W | 2.5KW-5.5KW |
PV Module Cable Connection (Figure 9):
- Strip 10 mm insulation from the positive and negative cables.
- Check the polarity of the PV module and PV input connection cables. Connect the positive (+) cable to the positive (+) PV input terminal and the negative (-) cable to the negative (-) PV input terminal.
- Ensure wires are connected correctly.
VI. Final Assembly
Replace the bottom cover and tighten the two screws as shown in Figure 11.
Operation
I. Powering On/Off
Once the unit is properly installed and batteries are connected, press the On/Off switch (located on the unit's button) to turn it on.
II. Operation and Display Panel
The control and display panel on the front of the inverter includes three indicators, four function buttons, and an LCD screen displaying operating status, input/output power information, and power source details.
LED Indicators
| LED | Status | Description |
|---|---|---|
| AC/INV | Green Solid | Output is powered directly from the mains ("Line Mode"). |
| Green Flashing | Output is powered by the battery or PV in battery mode. | |
| CHG | Green Solid | Battery is fully charged. |
| Green Flashing | Battery is charging. | |
| FAULT | Red Solid | An error has occurred in the inverter. |
| Red Flashing | The inverter has a warning. |
Key Functions
| Key | Function |
|---|---|
| ESC | Exit setup mode. |
| UP | Navigate to the previous setting. |
| DOWN | Navigate to the next option. |
| ENTER | Confirm selection or exit setup mode. |
III. LCD Screen Settings
Press and hold the ENTER button for 3 seconds to enter setup mode. Use the UP or DOWN buttons to select program settings, and press ENTER to confirm or ESC to exit.
Program Settings
| Program | Description | Options |
|---|---|---|
| 01 | Output Source Priority: Configure load source priority. |
|
| 02 | Max. Charging Current: Set the total charging current for solar and mains charging. (Max. Charging Current = Mains Charging Current + Solar Panel Charging Current) | 60A (default). Allows charging current from mains up to the specified maximum charging current, but not less than the mains charging current set in program 11. |
| 03 | AC Input Voltage Range | Configurable based on UPS, Generator, or standard AC input. |
| 05 | Battery Type |
For User-defined, parameters like charging voltage and low voltage cutoff can be set in programs 26, 27, and 29. For Lithium Battery without communication, default values are suitable. Charging voltage and low voltage cutoff can be set in programs 26, 27, and 29. |
| 06 | Automatic Restart after Overload | Enabled (default) or Disabled. |
| 07 | Automatic Restart after Over-temperature | Enabled (default) or Disabled. |
| 08 | Output Voltage | 220V or 230V (default). |
| 09 | Output Frequency | 50Hz (default) or 60Hz. |
| 10 | Automatic Bypass | Manual (default) or Auto. In Auto mode, the system bypasses automatically under correct power supply conditions, even if the switch is in the "off" position. |
| 11 | Max. Mains Charging Current | 30A (default). Allows charging current within a specified range, but not less than the mains charging current from program 11. |
| 12 | Voltage Setting for "SBU Priority" or "Solar First" | 48V models: Default 46V. Range 44.0V to 57.2V. Max setting must be less than program 13 value. Min setting must be greater than program 29 value. 24V models: Default 23V. Range 22.0V to 28.6V. Max setting must be less than program 13 value. Min setting must be greater than program 29 value. 12V models: Default 11.5V. Range 11.0V to 14.3V. Max setting must be less than program 13 value. Min setting must be greater than program 29 value. |
| 13 | Battery Full Charge Voltage Setting (default) | 48V models: Range 48V to (Program 26 value - 0.4V). Max setting must be greater than program 12 value. 24V models: Default 29.2V. Range 30V. Max setting must be greater than program 12 value. 12V models: Range 12V to (Program 13 value - 0.4V). Max setting must be greater than program 12 value. |
| 16 | Charging Source Priority |
|
| 18 | Buzzer Mode |
|
| 19 | Return to Default Screen |
|
| 20 | Backlight Control | Backlight On (default) or Backlight Off. |
| 23 | Overload Bypass: If enabled, the unit switches to mains mode during overload in battery mode. | Bypass Disabled (default) or Bypass Enabled. |
| 25 | Modbus ID | Configurable from 001 (default) to 247. |
| 26 | Charging Voltage Setting (C.V. voltage) | For "User-defined" setting: The setting value must be equal to or greater than the value in program 27. Each click increases by 0.1V. 12V models: Default 14.1V. Range 12.0V to 15.5V. 24V models: Default 28.2V. Range 24.0V to 30.0V. 48V models: Default 56.4V. Range 48.0V to 62.0V. |
| 27 | Float Charging Voltage | For "User-defined" setting: The setting value must be equal to or greater than the value in program 27. Each click increases by 0.1V. 12V models: Default 13.5V. 24V models: Default 27.0V. Range 24.0V to Program 26 value. 48V models: Default 54.0V. Range 48.0V to Program 26 value. |
| 29 | Low DC Voltage Cutoff | For "User-defined" setting: The setting value must be less than the value in program 12. Each click changes the value by 0.1V. The low DC voltage cutoff is set to the configured value, regardless of the connected load. Default settings and ranges: 12V models: Default 10.5V. Range 10.0V to 13.5V. 24V models: Default 21.0V. Range 20.0V to 27.0V. 48V models: Default 42.0V. Range 40.0V to 54.0V. |
| 32 | Max. Charging Current Setting | Set the maximum charging current, which must be less than the maximum charging current specified by the BMS. |
| 33 | Battery Equalization |
If "USE" is selected in program 05, this program can be set. |
| 34 | Battery Voltage Equalization | For "Flooded" or "User-defined" in program 05: This program can be set. 12V models: Range 12V to (Program 13 value - 0.4V). Max setting must be greater than program 12 value. 24V models: Default 29.2V. Range 30V. Each click increases by 0.1V. 48V models: Default 58.4V. Range 64V. Each click increases by 0.1V. |
| 35 | Battery Equalization Time | 60 min (default). Setting range 0 to 900 minutes. |
| 36 | Battery Equalization Time | 120 min (default). Setting range 0 to 900 minutes. |
| 37 | Equalization Interval | 30 days (default). Setting range 1 to 90 days. |
| 39 | Immediate Equalization |
If the equalization function is enabled in program 33, this program can be set. If "Enable" is selected, equalization starts immediately and "E9" is displayed on the LCD. If "Disable" is selected, the function is canceled until the next scheduled equalization according to program 37. "E9" will not be displayed on the LCD. |
| 41 | Automatic Activation for Lithium Battery |
If "LIx" is selected for lithium battery in program 05, and the battery is not detected, the device will automatically activate the lithium battery at the set time. To manually activate the lithium battery, restart the device. |
| 42 | Lithium Battery | Manual Activation: Note: This function is available only on models that support lithium battery activation. Other models have this setting reserved (not usable). If "LIx" is selected for lithium battery in program 05, and the battery is not detected, you can select this option to manually activate the lithium battery at any time. |
| 46 | Maximum Discharge Current Protection |
Available only in one model mode. If mains power is available, the unit switches to mains power mode, and battery discharge stops if the set discharge current is exceeded. If mains power is not available, a warning is displayed, and battery discharge continues regardless of the set discharge current value. Setting range: 20A to 500A. |
Battery Equalization
The charge controller includes an equalization function to address negative chemical effects like stratification, where acid concentration is higher at the bottom of the battery than at the top. Equalization helps remove sulfate crystals that may form on the plates. If left unchecked, sulfation can reduce the battery's overall capacity. Periodic equalization is recommended.
How to Implement the Equalization Function:
- Activate the battery equalization function in the LCD monitor settings (Program 33).
- You can then implement this function in one of the following ways:
- Set the equalization interval in Program 37.
- Activate equalization immediately in Program 39.
When to Equalize
In standby mode, when the set equalization time (battery equalization cycle) is reached, or when equalization is activated immediately, the controller switches to equalization mode.
Equalization Charging Time and Time Limit
During the equalization stage, the controller provides maximum charging power until the battery voltage reaches the set equalization voltage level. Then, a constant voltage charge is applied to maintain the battery voltage at the equalization level. The battery remains in the equalization stage until the set equalization time is reached. If the battery voltage has not reached the set equalization voltage after the set equalization time has passed, the charge controller will extend the equalization time until the battery voltage reaches the required level. If the battery voltage is still lower than the set equalization voltage after the extended equalization time, the charge controller will terminate the equalization process and return to standby mode.
Lithium Battery Settings
Lithium Battery Settings Without Communication
This recommendation applies when using lithium batteries and is intended to prevent the Battery Management System (BMS) from triggering due to a lack of communication between the BMS and the device. Follow these steps before starting the setup:
- Obtain the battery BMS specifications, particularly:
- A. Maximum charging voltage
- B. Maximum charging current
- C. Discharge protection voltage
- Set the battery type to "LIB".
- Set the C.V. (charging voltage) to the BMS's maximum charging voltage minus 0.5V.
- Set the Float Charging Voltage to be the same as the C.V. voltage.
Troubleshooting
| Problem | LCD/LED/Buzzer | Possible Cause | Solution |
|---|---|---|---|
| Unit shuts down automatically during startup. | LCD/LED display and buzzer are active for 3 seconds and then shut off completely. | Battery voltage is too low. | Charge the battery. Replace the battery. |
| Unit does not respond after power-on. | None. | Battery voltage is too low. Battery polarity is reversed. | Charge the battery. Replace the battery pack. Check that the battery and wires are connected correctly. Charge the battery. Replace the battery pack. |
| Power is available, but the unit operates in battery mode. | Input voltage displayed as 0 on LCD, and green LED flashes. | Green LED flashes. | Check if the AC switch is off and the AC wiring is connected correctly. Check if the AC wiring is too thin or too long. Check if the generator (if used) is operating correctly or if the input voltage range settings are correct. (UPS → Device) Change the output source priority to "Utility first". |
| Unit shuts down repeatedly when powered on. | LCD screen and LEDs flash intermittently. | Excessive current or input voltage protection is activated. | Reduce the load. |
| Buzzer beeps continuously and the red LED is on. | Error Code 07 (Overload) | Reduce the load. | |
| Unit is overloaded and time is up. | Error Code 05 | Check if the wiring is connected correctly and remove the abnormal load. | |
| Internal component temperature exceeds 100°C. | Error Code 02 | Check if the airflow in the device is obstructed or if the ambient temperature is too high. | |
| Battery is overcharged. | Error Code 03 | Contact the service center. | |
| Incorrect output (inverter voltage below 190Vac or above 260Vac). | Error Codes 06/22 | Check if the battery specifications and quantity meet the requirements. | Reduce the load. Contact the service center. |
| Internal components are faulty. | Error Codes 08/09/15 | Restart the device. If the error persists, contact the service center. | Contact the service center. |
| Bus voltage is too low. | Error Code 14 | If the cables are connected correctly, contact the service center. | Contact the service center. |
| Other error codes. | Various error codes. | Check wiring connections. | Contact the service center. |
Maintenance
- Keep the unit clean by wiping it with a soft, dry cloth. Do not use chemicals.
- Regularly check power cords and plugs for damage such as wear, cracks, or loose connections.
- Ensure ventilation openings are clean and unobstructed for adequate cooling.
- Avoid contact with water or other liquids to prevent electrical hazards.
Disposal
This product is subject to the Waste Electrical and Electronic Equipment (WEEE) regulations. Dispose of it at a collection point for electrical waste that provides safe recycling in accordance with GPSR standards. Check for the nearest collection points. If you have questions about disposal, contact the manufacturer or an authorized service center.
Warranty and Service Information
The product comes with a 24-month manufacturer's warranty from the date of purchase, covering all material and manufacturing defects. For issues related to the device, please contact our service department for prompt and professional service. The warranty does not cover damage resulting from misuse, drops, mechanical damage, unauthorized repairs, or attempts at disassembly.
