ECGSOLAX Solar Hybrid Inverter User Manual

1. Introduction

This ECGSOLAX multi-function inverter/charger combines the functions of an inverter, MPPT solar charger, and battery charger to provide uninterruptible power support in a portable size. Its comprehensive LCD display offers user-configurable and easy-to-access button operations for settings such as battery charging current, AC/Solar charger priority, battery charging/cut-off voltage, and acceptable input voltage based on different applications.

The inverter is designed for various applications including solar station systems, solar home systems, hybrid energy systems, solar RVs/vessels systems, and backup power solutions.

Figure 1: Front view of the ECGSOLAX Hybrid Inverter, highlighting 1.8KW/3KW power, 12V/24V rated power, 80A MPPT, and 450VDC PV input. Also shows WIFI icon.

2. Key Features

• Pure sine wave output for compatibility with various loads.
• Programmable supply priority for PV, battery, or Grid.
• High PV input voltage range (55~450VDC).
• Built-in Max 80A MPPT solar charge controller.
• Compatible with lithium-ion batteries.
• Supports BMS communication with Lithium batteries.
• Smart battery charge design to optimize battery life.
• Protection against overload, high temperature, and inverter output short circuit.
• Cold start function.
• Intelligent fan speed adjustment for efficient cooling.
• Built-in anti-dusk kit for harsh environments (optional).
• WIFI & GPRS available for iOS and Android monitoring (optional).

Figure 2: Overview of the 3000W Solar Inverter Charger applications, including Solar Station System, Solar Home System, Hybrid Energy System, Solar RVs/Vessels System, and backup power.

3. Setup and Installation

3.1 Physical Dimensions

Ensure adequate space for installation and ventilation. The inverter dimensions are:

• Height: 348 mm
• Width: 282 mm
• Depth: 105 mm

Figure 3: Dimensions of the inverter: 348mm (height), 282mm (width), 105mm (depth).

3.2 System Connection

Refer to the system connection diagram for proper wiring. Solar panels are recommended to be connected in series to achieve the optimal voltage range.

Figure 4: System Connection Diagram for the inverter, showing solar panels (recommended in series), generator/utility input, battery connection (24V Lead-Acid/Lithium), AC output to home appliances, and key specifications.

3.3 Connection Ports

The bottom panel of the inverter provides the following connection ports:

• AC IN: For connecting to the utility grid or a generator.
• AC OUT: For connecting to household appliances.
• INPUT BREAKER: Circuit breaker for AC input.
• BATTERY: Terminals for connecting the battery bank (12V or 24V).
• PV IN: Terminals for connecting solar panels.

Figure 5: Multiple views of the inverter, including the bottom panel showing connection ports (AC IN, AC OUT, INPUT BREAKER, BATTERY, PV IN).

3.4 WIFI Module (Optional)

For remote monitoring and control via a mobile app, an optional WIFI module is required and needs to be purchased separately. Connect the WIFI module to the designated communication port on the inverter.

Figure 6: Image showing monitoring and control via a smart app, with a QR code to download the app (supports iOS and Android). It also indicates that WIFI needs to be purchased separately.

4. Operation

4.1 LCD Display and Control Panel

The inverter features a comprehensive LCD display and control panel for monitoring and configuration. The display provides real-time information and allows users to adjust various settings.

Figure 7: Detailed view of the inverter's LCD display and control panel, with numbered indicators for PV input, AC input, input voltage/frequency/battery voltage/charger current, setting programs, flashing with warning code, output voltage/frequency/load percent/load in VA/load in watt and discharging current, load level, DC/AC inverter circuit working, battery level, utility charger circuit working, unit connects to PV panel, unit connects to mains, load supplied by utility power, unit alarm disabled, and overload.

4.2 Charging Modes

The inverter supports four distinct charging modes to optimize power management:

1. Solar Charging: Prioritizes solar power for battery charging.
2. Electricity Utility Priority: Prioritizes utility grid power for charging.
3. Solar Priority: Prioritizes solar power for both charging and load.
4. Hybrid Charging: Combines solar and utility power for charging.

Figure 8: Diagram showing four charging modes: Solar Charging, Electricity Utility Priority, Solar Priority, and Hybrid Charging. Also highlights Overtemperature Protection and Overload Protection.

4.3 Load Compatibility (Pure Sine Wave Output)

The inverter provides a pure sine wave output, ensuring compatibility with a wide range of sensitive electronics and appliances without interference. This includes TVs, refrigerators, computers, microwave ovens, and dishwashers.

Figure 9: Diagram illustrating the Pure Sine Wave Output of the inverter and listing various compatible loads.

Figure 10: Image showing the inverter's multi-functionality, supporting various household appliances. Emphasizes LiFePO4 battery support.

4.4 Mobile App Monitoring (Optional)

If the optional WIFI module is installed, you can monitor and control the inverter remotely using the dedicated mobile application available for iOS and Android devices. Scan the QR code provided with the WIFI module for app download.

Figure 11: Image demonstrating Wi-Fi communication for remote monitoring of the inverter via a mobile phone app.

5. Maintenance

• Cleaning: Regularly clean the exterior of the inverter with a dry, soft cloth. Ensure ventilation openings are free from dust and debris to maintain optimal cooling.
• Fan Speed Adjustment: The intelligent fan speed adjustment system helps manage internal temperature. Ensure the fans are not obstructed.
• Anti-Dusk Kit: If equipped with the optional anti-dusk kit, periodically inspect and clean its components to ensure effective protection in harsh environments.
• Connection Check: Periodically check all electrical connections (solar panels, battery, AC input/output) for tightness and signs of corrosion.
• Battery Health: Monitor battery voltage and performance through the LCD display or mobile app. Follow battery manufacturer guidelines for maintenance.

6. Troubleshooting

The inverter is equipped with protection features and diagnostic indicators to help identify and resolve issues.

6.1 Common Issues and Solutions

• No Power Output: Check AC input breaker, battery connections, and ensure the inverter is turned on. Verify battery voltage is within operating range.
• Overload Protection: If an overload warning appears (indicated by 'OVERLOAD' on the LCD, see Figure 7, item 15), reduce the connected load. The inverter will attempt to restart after a short period.
• High Temperature Protection: If a high temperature warning occurs, ensure adequate ventilation around the inverter. Clean any dust from the fan vents. The intelligent fan system should manage temperature, but extreme conditions may require manual intervention (e.g., moving to a cooler location).
• Inverter Output Short Circuit: The inverter will automatically shut down in case of a short circuit. Disconnect all loads, identify and fix the short circuit, then restart the inverter.
• Fault Codes: The LCD display (Figure 7, item 12) will show flashing codes for specific faults. Refer to the detailed fault code list in the full product manual for specific diagnostic steps.
• WIFI Connection Issues: Ensure the optional WIFI module is correctly installed and powered. Check network settings on your mobile device and ensure the inverter is within range of your Wi-Fi network.

7. Specifications

The following table details the technical specifications for the MIN-1.8K and MIN-3K models:

Figure 12: Detailed specification table for models MIN-1.8K and MIN-3K.

8. User Tips

• For optimal solar charging efficiency, ensure solar panels are oriented correctly and free from shading.
• When connecting batteries, always observe correct polarity (positive to positive, negative to negative) to prevent damage.
• If using the optional WIFI module, ensure a stable internet connection for reliable remote monitoring.
• Regularly check the inverter's display for any warning indicators or fault codes to address potential issues promptly.
• Consider the total power consumption of your appliances to avoid overloading the inverter, especially during peak usage.

9. Warranty and Support

This ECGSOLAX Solar Hybrid Inverter is CE certified, indicating compliance with European health, safety, and environmental protection standards.

For detailed warranty information, technical support, or service inquiries, please contact your authorized ECGSOLAX dealer or visit the official ECGSOLAX website. Keep your purchase receipt and product serial number handy when contacting support.