1. Introduction
This manual provides essential information for the safe and efficient operation of your VICTOR NM-ECO-4.2KW/6.2KW Grid-on/Off-grid Solar Inverter. This inverter is designed to convert DC power from solar panels and/or batteries into AC power for your home or grid, offering both grid-tied and off-grid functionalities. Please read this manual thoroughly before installation and use, and keep it for future reference.
2. Key Features
- Pure sine wave output for sensitive electronics.
- Supports both on-grid and off-grid operation modes.
- Integrated Wi-Fi & GPRS for remote monitoring via iOS and Android applications.
- Capable of running without a battery in certain configurations.
- One-key restoration to factory settings for easy reset.
- Automatic activation feature for lithium batteries.
- Built-in 120A MPPT solar charge controller, supporting up to 6200W PV input (for 4.2KW model).
- Wide PV input voltage range (60~450VDC) for flexible solar panel configurations.
- Equipped with an anti-dust kit for enhanced durability in harsh environments.
- Smart battery charge design to prolong battery lifespan.
- Dual AC output for versatile load management.
3. Installation and Setup
3.1 Unpacking and Inspection
Upon receiving your inverter, carefully unpack it and inspect for any signs of damage. Ensure all components listed in the packing list are present. If any damage or missing parts are found, contact your supplier immediately.
3.2 Mounting the Inverter
The inverter should be mounted vertically on a solid surface, away from direct sunlight, heat sources, and moisture. Ensure adequate clearance around the unit for proper ventilation. The unit features mounting brackets at the top for secure installation.
Figure 3.1: Front view of the inverter, highlighting mounting points.
3.3 Connection Overview
The inverter provides various connection terminals for AC input, AC output (main and second), battery, and PV input. Refer to the diagram below for the layout of these connections.
Figure 3.2: Rear panel connections (AC IN, MAIN OUT, SECOND OUT, BATTERY, PV IN, Input Breaker).
3.4 System Wiring Diagram
The inverter integrates solar modules, a generator, utility grid, and battery packs to power home appliances. The diagram illustrates the typical connections for a hybrid solar power system.
Figure 3.3: Hybrid Solar System Wiring Diagram.
Note: All wiring should be performed by a qualified electrician in accordance with local electrical codes and regulations. Ensure all power sources are disconnected before making any connections.
4. Operation
4.1 LCD Display and Indicators
The inverter features an LCD display that provides real-time operational status and system information. Understanding the icons and indicators is crucial for monitoring performance and identifying issues.
Figure 4.1: Inverter LCD Display.
Figure 4.2: LCD Display Icon Definitions.
- PV Input (1): Indicates power from solar panels.
- AC Input (2): Shows utility grid connection status.
- Input/Battery/Temp (3): Displays input voltage, input frequency, PV voltage, battery voltage, and charger current.
- Setting Programs (4): Indicates active settings.
- Warning Code (5): Flashes with specific codes for faults.
- Output/Battery/Load (6): Shows output voltage, output frequency, load percentage, load in VA/watt, and discharging current.
- Load Level (7): Visual representation of current load.
- DC/AC Inverter Circuit (8): Indicates inverter operation.
- Battery Level (9): Displays battery charge status.
- Utility Charger Circuit (10): Shows when the utility is charging batteries.
- Unit Connects to PV Panel (11): Confirms solar panel connection.
- Unit Connects to Mains (12): Confirms utility grid connection.
- Bypass (13): Indicates load is supplied by utility power.
- Unit Alarm Disabled (14): Shows when alarms are off.
- Overload (15): Indicates an overload condition.
4.2 Wi-Fi & GPRS Monitoring
The inverter supports remote monitoring via Wi-Fi and GPRS. Download the official application for iOS or Android devices to access real-time data, adjust settings, and receive alerts from your inverter. Refer to the app's instructions for setup and usage.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your solar inverter. The unit features a built-in anti-dust kit, reducing the need for frequent internal cleaning.
- Cleaning: Periodically clean the exterior of the inverter with a soft, dry cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
- Connections: Annually inspect all electrical connections (PV, battery, AC input/output) to ensure they are tight and free from corrosion.
- Environment: Verify that the installation environment remains within the recommended temperature and humidity ranges, and that ventilation is not obstructed.
- Battery Health: If using external batteries, monitor their health and charge cycles as recommended by the battery manufacturer. The inverter's smart battery charge design helps optimize battery life.
6. Troubleshooting
This section addresses common issues you might encounter with your inverter. For problems not listed here, please contact technical support.
6.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on / No display | No DC input from PV or battery; AC input not present; main breaker tripped. | Check PV connections and voltage. Verify battery connections and charge. Ensure AC input breaker is on. |
| Error Code 53 after control board replacement | Firmware mismatch with the new control board. | Ensure the correct firmware version is installed for the specific control board (02G). Contact technical support for firmware updates or compatibility verification. |
| Overload warning (Icon 15) | Connected load exceeds inverter's rated output power. | Reduce the connected load. Disconnect non-essential appliances. |
| Low battery voltage warning | Batteries are discharged or faulty. | Allow batteries to charge from solar or utility. Inspect batteries for damage or aging. |
7. Technical Specifications
| Category | Parameter | Value (NM-ECO-4.2KW PLUS) |
|---|---|---|
| General | Model | VICTOR NM-ECO-4.2KW PLUS |
| Phase | 1-phase | |
| Maximum PV Input Power | 6200W | |
| Rated Output Power | 4200W/4200VA | |
| Maximum Solar Charging Current | 120A | |
| GRID-TIE OPERATION | ||
| PV Input (DC) | Nominal DC Voltage/Maximum DC Voltage | 360VDC/500VDC |
| Start-up Voltage/Initial Feeding Voltage | 60VDC/90VDC | |
| MPPT Voltage Range | 60VDC~450VDC | |
| Number Of MPPT Trackers/Maximum Input Current | 1/18A | |
| GRID OUTPUT (AC) | ||
| AC Output | Nominal Output Voltage | 200/230/240VAC |
| Output Voltage Range | 195~253VAC | |
| Nominal Output Current | 18.2A | |
| Power Factor | >0.99 | |
| Feed-in Grid Frequency Range | 49~51±1Hz | |
| EFFICIENCY | ||
| Conversion | Maximum Conversion Efficiency (Solar/AC) | 98% |
| OFF-GRID OPERATION | ||
| AC Input | Input Voltage | 220/230/240VAC |
| BATTERY MODE OUTPUT (AC) | ||
| AC Output | Nominal Output Voltage | 220/230/240VAC |
| Output Waveform | Pure sine wave | |
| Efficiency (DC to AC) | 94% | |
| BATTERY & CHARGER | ||
| Battery | Nominal DC Voltage | 24VDC |
| Maximum Solar Charging Current (Solar to AC) | 120A | |
| Maximum AC Charging Current | 100A | |
| PHYSICAL | ||
| Dimensions & Weight | Dimension (D x W x H) | 420*350*110 (MM) |
| Cartoon Dimension (D x W x H) | 500*415*180 (MM) | |
| Net Weight | 8.0 KG | |
| Gross Weight | 9.0 KG | |
| Other | Operating Temperature Range | -10℃~50℃ |
| Certificate | CE | |
| Output waveform | Prue Sine Wave | |
8. User Tips
- When replacing components like the control board, always ensure you have the correct firmware version that matches the new hardware to avoid errors (e.g., Error 53). Consult technical support for firmware compatibility.
- Regularly check the inverter's display for any flashing warning codes and refer to the LCD Icon Definitions (Figure 4.2) for immediate diagnosis.
- For optimal battery life, ensure your battery type settings in the inverter are correctly configured and avoid deep discharges where possible.
9. Warranty and Support
9.1 Warranty Information
This VICTOR solar inverter comes with a 1-year warranty from the date of purchase. The warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by improper installation, misuse, natural disasters, or unauthorized modifications.
9.2 Technical Support
For technical assistance, troubleshooting, or warranty inquiries, please contact our support team:
- WhatsApp: +86 17267586993
- Email: maoyishunda@gmail.com
When contacting support, please provide your inverter model number and a detailed description of the issue.
