Introduction
This manual provides essential information for the safe and efficient operation of your Easun Hybrid Off-Grid Solar Inverter. Please read this manual thoroughly before installation and use, and keep it for future reference.
Key Features
- Pure sine wave inverter output.
- Capable of running without a battery (PV input voltage higher than 200V).
- Built-in dual MPPT solar controller.
- Configurable input voltage range for various applications (home appliances, personal computers).
- Configurable battery charging current.
- Configurable AC/Solar Charger priority.
- Compatible with mains voltage or generator power.
- Automatic restart upon AC recovery.
- Overload, over temperature, and short circuit protection.
- Smart battery charger design for optimized battery performance.
- Cold start function.
- Parallel capability for 11KW models (up to 6 units) for orders from end of August 2025.
Unboxing the Inverter
Carefully unpack the inverter and inspect for any damage. Ensure all components are present.
Video: Unboxing and initial inspection of the Easun Hybrid Solar Inverter, showing the main unit, user manual, and included accessories like connectors and a WiFi module.
Setup and Installation
Mounting the Unit
Consider the following points before selecting where to install the inverter:
- 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.
CAUTION: SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
PV Module Connection
When selecting proper PV modules, please be sure to consider below parameters:
- Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.
- Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
Battery Connection
The 11KP model supports a 48VDC system. Ensure correct polarity when connecting batteries.
Inverter Ports and Connections
Detailed port descriptions:
- PV1 input
- PV2 input
- AC input
- Grounding point
- Main output
- Second output
- Dry contact port
- RS232 communication port (DB9)
- RS485 communication port (RJ45)
- RS232 communication port (RJ45)
- Parallel communication port (only for parallel model)
- Battery negative/positive outlet hole
- Power on/off switch
Operating Instructions
Product Overview and Indicators
The front panel features:
- LCD display
- Status indicator
- Charging indicator
- Fault indicator
- Function buttons
LED Indicator Messages
| 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 Descriptions
| 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 |
System Operation Diagrams
Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter. Always disconnect all power sources before performing any maintenance.
- Keep the inverter's ventilation openings clear of dust and debris to ensure proper airflow and heat dissipation.
- Periodically check all wiring connections for tightness and signs of corrosion.
- Inspect the inverter for any visible damage or unusual noises.
- Ensure the operating environment remains within the specified temperature and humidity ranges.
Troubleshooting
This section provides basic troubleshooting steps for common issues. For more complex problems, contact qualified service personnel.
- No Power Output: Check the power on/off switch, battery connections, and AC input. Verify that the utility grid or generator is supplying power if applicable.
- Fault Indicator On: Refer to the LED Indicator Messages table in the Operating Instructions section to identify the type of fault or warning. Address the underlying issue (e.g., overload, over temperature).
- Battery Not Charging: Check solar panel connections, PV input voltage, and AC input. Ensure the charging current settings are appropriate for your battery type.
- Unusual Noises: If you hear abnormal sounds, immediately disconnect power and inspect the unit for loose components or internal damage.
Specifications
The following table details the technical specifications for the Easun Hybrid Off-Grid Solar Inverter models.
| MODEL | ISolar-SMG-II-8.5KW-48V-WiFi | ISolar-SMG-II-11KP-48V-WiFi | ISolar-SMF-II-11KP-48V-WiFi |
|---|---|---|---|
| Capacity | 8.5KVA/8.5KW | 11KVA/11KW | 11KVA/11KW |
| Maximum PV Input Power | 10KW | 11KW | 11KW |
| Parallel Capability | NO | YES (6 pcs) | YES (6 pcs) |
| Lithium Battery Activation | YES (By PV or Utility) | NO | |
| Lithium Battery Communication | YES (RS485) | ||
| INPUT | |||
| Nominal Voltage | 230VAC | ||
| Acceptable Voltage Range | 170-280VAC (For personal Computer); 90-280VAC (For Home Appliances) | ||
| Frequency | 50/60Hz (Autosensing) | ||
| OUTPUT | |||
| Nominal Voltage | 220/230/240VAC | ||
| Surge Power | 17000VA | 22000VA | 22000VA |
| Frequency | 50/60Hz | ||
| Waveform | Pure Sinewave | ||
| Transfer Time | 10ms (For personal Computer); 20ms (For Home Appliances) | ||
| Peak Efficiency | 94% | ||
| Overload Protection | 5s@>=140%load; 10s@110%~140%load | ||
| Admissible Power Factor | 0.6~1 (inductive or capacitive) | ||
| BATTERY | |||
| Battery Voltage | 48VDC | 48VDC | 48VDC |
| Maximum Discharge Current | 180A | 220A | 220A |
| Floating Charge Voltage | 54VDC | 54VDC | 54VDC |
| Over Charge Protection | 63VDC | 63VDC | 60VDC |
| Charging Method | CC/CV | ||
| SOLAR CHARGER & AC CHARGER | |||
| Solar Charger TYPE | MPPT | MPPT | MPPT |
| Max. PV Array Power | 5000W*2 | 5500W*2 | 5500W*2 |
| Max. PV Array Open Circuit Voltage | 500VDC | 500VDC | 500VDC |
| PV Array MPPT Voltage Range | 60VDC~500VDC | 60VDC~500VDC | 120VDC~450VDC |
| Max. Solar Input Current | 18A*2 | 18A*2 | 18A*2 |
| Max. Solar Charge Current | 140A | 160A | 120A |
| Max. AC Charge Current | 120A | 120A | 120A |
| Max. Charge Current | 140A | 160A | 120A |
| PHYSICAL | |||
| Dimensions, DxWxH (mm) | 540*415*122 | 540*415*122 | 490*580*139 |
| Net Weight (Kgs) | 14 | 15 | 19.5 |
| Communication Interface | RS232/RS485/DRYCONTACT | ||
| LCD | YES | ||
| ENVIRONMENT | |||
| Operating Temperature Range | -10°C to 55°C | ||
| Storage temperature | -15°C to 60°C | ||
| Humidity | 5% to 95% Relative Humidity (Non-condensing) | ||
User Tips
While no specific user tips were available from reviews or Q&A, here are some general recommendations for optimal performance:
- Regularly monitor the LCD display for status updates and any warning/fault indicators.
- Ensure your PV array voltage is consistently above 200V if operating without batteries.
- For parallel operation (11KW models from August 2025), ensure all units are properly configured and connected according to the parallel communication port instructions.
- Always consult the detailed user manual (if a PDF is available) for advanced settings and specific error codes.
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.
