1. Introduction
This manual provides essential information for the safe and efficient operation of your EASUN POWER MPPT Solar Hybrid Inverter. Please read this manual thoroughly before installation and use. It covers the 2KW, 4KW, and 6.2KW models, which are designed to provide reliable power for various applications, integrating solar power, utility power, and battery power.
Key Features:
- Pure sine wave solar inverter
- High PV input voltage range (60V-500VDC)
- Built-in MPPT solar charge controller
- Inverter running without battery (PV voltage needs to be above 160V for 4KW and 6.2KW models)
- WIFI-GPRS remote monitoring
- Auto restart while AC is recovering
- Configurable AC/Solar Charging priority via LCD setting
- Overload/Over temperature/short circuit protection
2. Safety Instructions
Please observe the following safety precautions during installation and operation:
- Ensure all connections are secure and correctly polarized.
- Do not attempt to open or repair the inverter yourself. Refer to qualified personnel.
- Install the inverter in a well-ventilated area, away from flammable materials.
- Ensure proper grounding of the unit.
- Always disconnect power sources before performing any maintenance or wiring.
3. Setup and Installation
3.1. Product Overview
The EASUN POWER Solar Hybrid Inverter is available in 2KW, 4KW, and 6.2KW capacities, each designed for specific battery voltages and PV array configurations.
3.2. Mounting the Unit
Consider the following points before selecting where to install:
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface.
- Install this inverter at eye level in order to allow the LCD display to be read at all times.
- The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
- The recommended installation position is to be adhered to the wall vertically.
- Be sure to keep other objects and surfaces as shown in the right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
3.3. Wiring Connections
Refer to the following diagrams and video for proper wiring of AC, battery, and PV inputs/outputs.
- Connecting AC: Connect the AC input and output wires to the designated terminals.
- Connecting Battery: Connect the positive and negative battery terminals. For the 6.2KW model, a 48VDC system is supported.
- Connecting PV: Connect the PV input wires to the designated terminals.
- Access Battery: Ensure battery connections are secure.
- Connect to WiFi: Plug in the WiFi module to the designated port for remote monitoring.
4. Operating Instructions
4.1. LCD Display and Buttons
The inverter features an LCD display and function keys for monitoring and configuration.
| Icon | Function Description |
|---|---|
| AC | Indicates the AC input. |
| PV | Indicates the PV input. |
| INPUTBATT | Indicate input voltage, input frequency, PV voltage, battery voltage and charger current. |
| 88 | Indicates the setting programs. |
| 88 (flashing) | Warning: flashing with warning code. |
| 88 (lighting) | Fault: lighting with fault code. |
| OUTPUTBATTLOAD | Indicate output voltage, output frequency, load percent, load in VA, load in Watt and discharging current. |
| Battery Level | Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line mode. |
| Mains Connection | Indicates unit connects to the mains. |
| PV Panel | Indicates load is supplied by the PV panel. |
| BYPASS | Indicates the utility charger circuit is working. |
| DC/AC Inverter | Indicates the DC/AC inverter circuit is working. |
| LED Indicator | Messages |
|---|---|
| AC / INV (Green, Solid On) | Output is powered by utility in Line mode. |
| AC / INV (Green, Flashing) | Output is powered by battery or PV in battery mode. |
| CHG (Green, Solid On) | Battery is fully charged. |
| CHG (Green, Flashing) | Battery is charging. |
| FAULT (Red, Solid On) | Fault occurs in the inverter. |
| FAULT (Red, Flashing) | Warning condition occurs in the inverter. |
| Function Key | Description |
|---|---|
| ESC | To exit setting mode. |
| UP | To go to previous selection. |
| DOWN | To go to next selection. |
| ENTER | To confirm the selection in setting mode or enter setting mode. |
4.2. WiFi Remote Monitoring
The inverter supports WIFI-GPRS remote monitoring. Connect the provided WiFi module to the inverter's communication port. Follow the instructions provided with the WiFi module for network setup and app configuration to monitor your system remotely.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Keep the inverter's ventilation openings clear of dust and debris to prevent overheating. Use a dry cloth for cleaning the exterior.
- Connection Checks: Periodically inspect all wiring connections (AC, DC, battery, PV) to ensure they are tight and free from corrosion. Loose connections can lead to power loss or damage.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges.
- Battery Health: Monitor your battery's health and charge status regularly, especially if using lead-acid batteries, to maximize their lifespan.
6. Troubleshooting
This section provides guidance on common issues. For complex problems, contact technical support.
6.1. Common Issues and Solutions
- No Power Output: Check AC input, battery connections, and PV input. Ensure the inverter is switched ON. Check for fault codes on the LCD.
- Battery Not Charging: Verify PV input voltage and current. Check battery connections and settings. Ensure the solar charge controller is functioning.
- Inverter Overheating: Check for blocked ventilation. Ensure ambient temperature is within limits. Reduce load if necessary.
- Fault Codes Displayed: Refer to the LCD Display Icons and Functions table for the meaning of specific fault codes. Address the underlying issue as indicated.
7. Specifications
Detailed specifications for the EASUN POWER MPPT Solar Hybrid Inverter models:
| Model | SMG-III-6.2KW-WIFI | SMG-II-4KW-WIFI | SMG-II-2KW-WIFI |
|---|---|---|---|
| Rated Power | 6.2KVA/6.2KW | 3.5KVA/3.5KW | 2KVA/2KW |
| Work without battery | Yes, PV input needs to be more than 280V | Yes, PV input needs to be more than 280V | NO, battery is mandatory |
| Number of Parallel | NO | NO | NO |
| With WIFI | YES | YES | YES |
| BMS | YES | YES | YES |
| Input | |||
| Voltage | 220/230VAC | ||
| Selectable Voltage Range | 170～280VAC(For Personal Computers), 90～280VAC(For Home Appliances) | ||
| Frequency Range | 50Hz/60Hz(Auto sensing) | ||
| Wave form | Pure Sine Wave | ||
| Output | |||
| AC Voltage Regulation (Batt.Mode) | 230VAC±5% | 220/230VAC±5% | 230VAC±5% |
| Surge Power | 12400VA | 7000VA | 3000VA |
| Efficiency (Peak) PV to INV | 97% | 96% | 95% |
| Efficiency (Peak) Battery to INV | 94% | 93% | 94% |
| Transfer Time | 10ms(For Personal Computers); 20ms(For Home Appliances) | ||
| Battery & AC Charger | |||
| Battery Voltage | 48VDC | 24VDC | 12VDC |
| Floating Charge Voltage | 54VDC | 37VDC | 13.5VDC |
| Overcharge Protection | 63VDC | 31VDC | 14.1VDC |
| Maximum Charge Current | 80A | 80A | 80A |
| Solar Charger | |||
| Maximum PV Array Power | 6500W | 4000W | 900W |
| Solar Charger Type | MPPT Solar Charge Controller | ||
| MPPT Range @ Operating Voltage | 60～500VDC | 60~500VDC | 30-160VDC |
| Maximum PV Array Open Circuit Voltage | 500VDC | 500VDC | 160VDC |
| Maximum Charging Current | 120A | 100A | 120A |
| Max. Solar Input Current | 27A | 15A | 30A |
| Physical | |||
| Dimension, D*W*H(mm) | 438*295*105 | 358*295*100 | 358*295*105 |
| Net Weight(kgs) | 9kg | 7kg | 6kg |
| Communication Interface | RS232/RS485/ WIFI | RS232 / RS485 /WIFI | RS232/RS485 /WIFI |
| Operating Environment | |||
| Humidity | 5% to 95% Relative Humidity (Non-condensing) | ||
| Operating Temperature | 0℃～55℃ | -10°C to 55°C | -10°C to 55°C |
| Storage Temperature | -15℃～60℃ | -15°C to 60°C | -15°C to 60°C |
8. User Tips
- For optimal performance, ensure your PV array voltage is consistently within the recommended MPPT operating range.
- When configuring charging priorities, consider your local utility rates and solar availability to maximize energy savings.
- Regularly check the LCD display for any warning or fault codes and address them promptly to prevent system downtime.
- If using the WiFi monitoring feature, ensure a stable internet connection for reliable data access.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the manufacturer's official website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.
For additional resources, you may visit the EASUN POWER Grow Store Store online.
