1. Introduction
1.1 Purpose & Scope
This manual provides safety and installation guidelines, as well as information on tools and wiring for the Anern Hybrid Solar Inverter. It is a multi-function inverter/charger, combining functions of inverter, solar charger, and battery charger to offer uninterruptible power support.
1.2 Key Features
- Pure sine wave output.
- Configurable input voltage range for home appliances and personal computers via LCD setting.
- Configurable battery charging current based on applications via LCD setting.
- Configurable AC/Solar Charger priority via LCD setting.
- Compatible with mains voltage or generator power.
- Auto restart while AC is recovering.
- Overload, over temperature, and short circuit protection.
- Smart battery charger design for optimized battery performance.
- Cold start function.
1.3 Product Overview
The Anern Hybrid Solar Inverter is designed to provide reliable power. Below are visual representations of the product and its components.
Product Components (Refer to Figure 5 on PDF page 5)
- LCD display
- Status indicator
- Charging indicator
- Fault indicator
- Function buttons
- Power on/off switch
- AC input
- Main output
- Second output
- Battery input
- PV input
- Anti dust kit
- RS-485 communication port/WiFi-port
2. Safety Instructions
WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.
- Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual.
- CAUTION: To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries. Other types of batteries may burst, causing personal injury and damage.
- Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect re-assembly may result in a risk of electric shock or fire.
- To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
- CAUTION: Only qualified personnel can install this device with battery.
- NEVER charge a frozen battery.
- For optimum operation of this inverter/charger, please follow required specifications to select appropriate cable size. It's very important to correctly operate this inverter/charger.
- Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
- Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to the INSTALLATION section of this manual for details.
- One piece of 150A fuse is provided as over-current protection for the battery supply.
- GROUNDING INSTRUCTIONS: This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulations to install this inverter.
- NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.
- Warning!! Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.
3. Installation & Setup
3.1 Unpacking and Inspection
Before installation, inspect the unit to ensure nothing inside the package is damaged. You should have received the unit and this user manual.
3.2 Mounting the Unit
Consider the following points for installation:
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface.
- Install this inverter at eye level to allow the LCD display to be read at all times.
- For proper air circulation to dissipate heat, allow a clearance of approximately 20 cm to the side and 50 cm above and below the unit.
- The ambient temperature should be between 0°C and 55°C for optimal operation.
- The recommended installation position is to be adhered to the wall vertically.
- Keep other objects and surfaces clear as shown in the diagram to guarantee sufficient heat dissipation and space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
Install the unit by screwing two M6 screws.
3.3 Wiring Connections
Before connecting any wires, remove the bottom cover by unscrewing two screws. Refer to the video below for a visual guide on connecting wires.
Video 1: Step-by-step guide on connecting wires to the inverter.
3.3.1 Battery Connection
CAUTION: For safety and compliance, install a separate DC over-current protector or disconnect device between the battery and inverter. Over-current protection is always required. Refer to the table below for recommended fuse or breaker size.
WARNING! All wiring must be performed by qualified personnel. Use appropriate cables for battery connection to reduce risk of injury.
| Model | Wire Size | Cable (mm²) | Torque Value (max) |
|---|---|---|---|
| 3.6KW/4.2KW/6.2KW | 1 x 2AWG | 25 | 2 Nm |
Steps:
- Remove insulation sleeve 18 mm for positive and negative conductors.
- Suggest putting bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
- Connect all battery packs as shown in the diagram below.
- Insert the battery wires flatly into battery connectors of the inverter and ensure the bolts are tightened with a torque of 2 Nm in a clockwise direction. Ensure polarity is correct.
WARNING: Shock Hazard. Installation must be performed with care due to high battery voltage in series.
CAUTION!! Before making the final DC connection or closing the DC breaker/disconnector, ensure positive (+) is connected to positive (+) and negative (-) is connected to negative (-).
3.3.2 AC Input/Output Connection
CAUTION!! Before connecting to the AC input power source, install a separate AC breaker between the inverter and AC power source. This ensures the inverter can be securely disconnected during maintenance and protected from overcurrent.
| Model | Gauge | Cable (mm²) | Torque Value |
|---|---|---|---|
| 3.6KW/4.2KW | 12 AWG | 4 | 1.2 Nm |
| 6.2KW | 10 AWG | 6 | 1.2 Nm |
Steps:
- Before making AC input/output connection, ensure the DC protector or disconnector is open.
- Remove insulation sleeve 10mm for six conductors. Shorten phase L and neutral conductor N by 3 mm.
- Insert AC input wires according to polarities (L: brown or black, N: blue) indicated on the terminal block and tighten the screws.
- Insert AC output wires according to polarities (L: brown or black, N: blue) indicated on the terminal block and tighten the screws.
- Make sure all wires are securely connected.
WARNING: Ensure AC power source is disconnected before attempting to hardwire it to the unit.
CAUTION: Appliances like air conditioners require 2-3 minutes to restart. If power fluctuates, it can damage connected appliances. Check if your air conditioner has a time-delay function.
3.3.3 PV Connection
CAUTION: Install a DC circuit breaker between the inverter and PV modules.
WARNING! Use appropriate cable for PV module connection to ensure system safety and efficient operation.
| Model | Wire Size | Cable (mm²) | Torque Value (max) |
|---|---|---|---|
| 3.6KW/4.2KW/6.2KW | 1 x 12AWG | 4 | 1.2 Nm |
PV Module Selection:
When selecting PV modules, consider the following:
- Open circuit Voltage (Voc) of PV modules must not exceed the max. PV array open circuit voltage of the inverter.
- Open circuit Voltage (Voc) of PV modules should be higher than the min. battery voltage.
| INVERTER MODEL | 3.6KW/4.2KW | 6.2KW |
|---|---|---|
| Max. PV Array Open Circuit Voltage | 500Vdc | |
| PV Array MPPT Voltage Range | 60Vdc~500Vdc | |
PV Module Wire Connection Steps:
- Remove insulation sleeve 10 mm for positive and negative conductors.
- Suggest putting bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
- Check correct polarity of wire connection from PV modules and PV input connectors. Connect positive pole (+) to positive pole (+) and negative pole (-) to negative pole (-). Recommended tool: 4mm blade screwdriver.
3.4 Final Assembly
After connecting all wirings, put the bottom cover back by screwing the two screws.
3.5 Communication Connection (Optional)
For Wi-Fi or GPRS cloud communication, use the supplied communication cable to connect to the inverter and the respective module. Download the APP from the APP store and refer to the 'Wi-Fi Plug Quick Installation Guideline' or 'GPRS RTU Quick Installation Guideline' to set up the network and register. The inverter status will then be shown on your mobile phone APP or computer webpage.
4. Operation
4.1 Power ON/OFF
Once the unit is properly installed and batteries are connected, simply press the On/Off switch (located on the bottom of the case) to turn on the unit.
To turn off the inverter, follow these steps:
- Turn off the load, PV input, and AC input.
- Turn off the inverter.
- Turn off the battery.
Refer to the video below for a visual guide on starting and stopping the inverter.
Video 2: Demonstrates the startup and shutdown procedure for the inverter.
4.2 Operation and Display Panel
The operation and display panel is on the front of the inverter, featuring three indicators, four function keys, and an LCD display for operating status and input/output power information.
4.2.1 RGB Light (Option)
- Battery Mode: Red Light
- Utility Mode: Blue Light
- PV Mode: Purple Light
4.2.2 LCD Display Icons & Indicators
The LCD display provides various information and status indicators. Refer to the manual (PDF pages 12-13) for a detailed list of icons and their meanings, including input source information, output information, battery information, load information, mode operation information, and mute operation.
4.2.3 LCD Setting
To enter setting mode, press and hold the ENTER button for 3 seconds. Use the UP or DOWN buttons to select programs, and ENTER to confirm or ESC to exit. Detailed settings are available in the full PDF manual (pages 14-20), covering aspects like output source priority, maximum charging current, AC input voltage range, battery type, auto restart functions, output frequency, output voltage, and various voltage settings for battery and grid-tie operations.
4.2.4 Display Setting
The LCD display information can be switched by pressing the UP or DOWN key. Selectable information includes input voltage, frequency, PV voltage, charging current, battery voltage, output voltage, load percentage, and more. Refer to the full PDF manual (pages 21-26) for detailed display screens for charged, discharged, standby, line, and grid-tie modes.
4.3 Battery Equalization
The equalization function helps reverse the buildup of negative chemical effects in batteries, such as stratification and sulfation, which can reduce battery capacity. It's recommended to equalize batteries periodically.
To apply equalization, enable the function in LCD setting program 30. Then, you can set the equalization interval in program 35 or activate it immediately in program 36. The inverter will enter the Equalize stage when the set interval is reached or activated.
5. Maintenance
5.1 Anti-Dust Kit Clearance and Maintenance
Your inverter comes with an anti-dust kit installed from the factory. This kit helps keep dust out and increases product reliability. The inverter automatically detects this kit and adjusts internal thermal sensors.
Steps for Maintenance:
- Loosen the screw on the top of the inverter in a counterclockwise direction.
- Remove the dustproof case and take out the air filter foam.
- Clean the air filter foam and dustproof case.
- After cleaning, re-assemble the dust-kit back to the inverter.
NOTICE: The anti-dust kit should be cleaned from dust every one month.
6. Troubleshooting
This section provides common problems, their possible causes, and solutions. For detailed fault codes and warning indicators, refer to the full PDF manual (pages 28-29).
| Problem | LCD/LED/Buzzer | Explanation / Possible Cause | What to do |
|---|---|---|---|
| Unit shuts down automatically during startup process. | LCD/LEDs and buzzer active for 3 seconds then off. | Battery voltage is too low (<1.91V/Cell) | 1. Re-charge battery. 2. Replace battery. |
| No response after power on. | No indication. | 1. Battery voltage is too low (<1.4V/Cell) 2. Internal fuse tripped. | 1. Contact repair center for fuse replacement. 2. Re-charge battery. 3. Replace battery. |
| Mains exist but unit works in battery mode. | Input voltage displayed as 0 on LCD, green LED flashing. | Input protector is tripped | Check if AC breaker is tripped and AC wiring is connected well. |
| Mains exist but unit works in battery mode. | Green LED is flashing. | Insufficient quality of AC power (Shore or Generator) | 1. Check if AC wires are too thin and/or too long. 2. Check if generator (if applied) is working well or if input voltage range setting is correct (UPS/Appliance). |
| Mains exist but unit works in battery mode. | Green LED is flashing. | Set "Solar First" as priority of output source. | Change output source priority to Utility first. |
| When unit is turned on, internal relay switches on and off repeatedly. | LCD display and LEDs are flashing. | Battery is disconnected. | Check if battery wires are connected well. |
| Buzzer beeps continuously and red LED is on. | Fault code 07 | Overload error. Inverter is overload 110% and time is up. | Reduce the connected load by switching off some equipment. |
| Buzzer beeps continuously and red LED is on. | Fault code 05 | Output short circuited. | Check if wiring is connected well and remove abnormal load. |
| Buzzer beeps continuously and red LED is on. | Fault code 02 | Temperature of internal converter component is over 120°C. Internal temperature of inverter component is over 100°C. | Check whether the air flow of the unit is blocked or whether the ambient temperature is too high. |
| Buzzer beeps continuously and red LED is on. | Fault code 03 | Battery is over-charged. | Return to repair center. |
| Buzzer beeps continuously and red LED is on. | Fault code 01 | Fan fault | Replace the fan. |
| Buzzer beeps continuously and red LED is on. | Fault code 06/58 | Output abnormal (Inverter voltage below 190Vac or higher than 260Vac) | 1. Reduce the connected load. 2. Return to repair center. |
| Buzzer beeps continuously and red LED is on. | Fault code 08/09/53/57 | Internal components failed. | Return to repair center. |
| Buzzer beeps continuously and red LED is on. | Fault code 51, 52, 55 | Over current or surge, Bus voltage too low, Output voltage unbalanced. | Restart the unit, if the error happens again, please return to repair center. |
7. Specifications
Below are the detailed specifications for the Anern Hybrid Solar Inverter models.
7.1 Line Mode Specifications (Table 1)
| Feature | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Input Voltage Waveform | Sinusoidal (utility or generator) | ||
| Nominal Input Voltage | 230Vac | ||
| Low Loss Voltage | 170Vac±7V (UPS); 90Vac±7V (Appliances) | ||
| Low Loss Return Voltage | 180Vac±7V (UPS); 100Vac±7V (Appliances) | ||
| High Loss Voltage | 280Vac±7V | ||
| High Loss Return Voltage | 270Vac±7V | ||
| Max AC Input Voltage | 300Vac | ||
| Nominal Input Frequency | 50Hz / 60Hz (Auto detection) | ||
| Low Loss Frequency | 40±1Hz | ||
| Low Loss Return Frequency | 42±1Hz | ||
| High Loss Frequency | 65±1Hz | ||
| High Loss Return Frequency | 63±1Hz | ||
| Output Short Circuit Protection | Circuit Breaker | ||
| Efficiency (Line Mode) | >95% (Rated R load, battery full charged) | ||
| Transfer Time | 10ms typical (UPS); 20ms typical (Appliances) | ||
7.2 Inverter Mode Specifications (Table 2)
| Feature | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Rated Output Power | 3.6KW | 4.2KW | 6.2KW |
| Output Voltage Waveform | Pure Sine Wave | ||
| Output Voltage Regulation | 230Vac±5% | ||
| Output Frequency | 50Hz | ||
| Peak Efficiency | 93% | ||
| Overload Protection | 3s@≥150% load; 5s@101%~150% load | ||
| Surge Capacity | 2* rated power for 5 seconds | ||
| Nominal DC Input Voltage | 24Vdc | 48Vdc | |
| Cold Start Voltage | 23.0Vdc | 46.0Vdc | |
| Low DC Warning Voltage (<50% load) | 22.0Vdc | 44.0Vdc | |
| Low DC Warning Voltage (≥50% load) | 21.0Vdc | 42.0Vdc | |
| Low DC Warning Return Voltage (<50% load) | 22.5Vdc | 45.0Vdc | |
| Low DC Warning Return Voltage (≥50% load) | 22.0Vdc | 44.0Vdc | |
| Low DC Cut-off Voltage (<50% load) | 20.5Vdc | 41.0Vdc | |
| Low DC Cut-off Voltage (≥50% load) | 20.0Vdc | 40.0Vdc | |
| High DC Recovery Voltage | 32Vdc | 62Vdc | |
| High DC Cut-off Voltage | 33Vdc | 63Vdc | |
| No Load Power Consumption | 30W | 35W | 50W |
7.3 Two Load Output Power (Table 3)
| INVERTER MODEL | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Full Load | 3600W | 4200W | 6200W |
| Maximum Main Load | 3600W | 4200W | 6200W |
| Maximum Second Load (battery model) | 1200W | 1400W | 2066W |
| Main Load Cut Off Voltage | 22VDC | 44VDC | |
| Main Load Return Voltage | 26VDC | 52VDC | |
7.4 Charge Mode Specifications (Table 4)
| Feature | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Charging Algorithm | 3-Step | ||
| AC Charging Current (Max) | 100Amp (@VI/P=230Vac) | ||
| Bulk Charging: Flooded Battery Voltage | 29.2 | 58.4 | |
| Bulk Charging: AGM / Gel Battery Voltage | 28.2 | 56.4 | |
| Floating Charging Voltage | 27Vdc | 54Vdc | |
| MPPT Solar Charging Mode | |||
| Max. PV Array Power | 6200W | 6500W | |
| Nominal PV Voltage | 240Vdc | 360Vdc | |
| PV Array MPPT Voltage Range | 60Vdc~500Vdc | ||
| Max. PV Array Open Circuit Voltage | 500Vdc | ||
| Max Charging Current (AC charger plus solar charger) | 120Amp | 120Amp | 120Amp |
7.5 Grid-Tie Operation (Table 5)
| Feature | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Nominal Output Voltage | 220/230/240 VAC | ||
| Feed-in Grid Voltage Range | 195~253VAC | ||
| Feed-in Grid Frequency Range | 49~51±1Hz/59~61±1Hz | ||
| Nominal Output Current | 15.7A | 18.2A | 26.9A |
| Power Factor Range | >0.99 | ||
| Maximum Conversion Efficiency (DC/AC) | 97% | ||
7.6 General Specifications (Table 6)
| Feature | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Safety Certification | CE | ||
| Operating Temperature Range | -10°C to 50°C | ||
| Storage Temperature | -15°C~60°C | ||
| Humidity | 5% to 95% Relative Humidity (Non-condensing) | ||
| Dimension (D*W*H), mm | 110X334X423 | ||
| Net Weight, kg | 9 | 9.5 | 10 |
8. User Tips
- Ventilation is Key: Always ensure adequate airflow around the inverter. Blocked vents can lead to overheating and reduced performance.
- Regular Cleaning: Clean the anti-dust kit monthly to prevent dust buildup, which can impact efficiency and lifespan.
- Secure Connections: Periodically check all wiring connections (battery, AC, PV) to ensure they remain tight and secure. Loose connections can cause power loss or damage.
- Monitor Display: Pay attention to the LCD display and indicator lights for any warnings or fault codes. Addressing issues promptly can prevent larger problems.
- Battery Health: Implement the battery equalization function as recommended to maintain optimal battery health and extend its lifespan.
9. Warranty & Support
For detailed warranty information and technical support, please contact your local dealer or the manufacturer directly. Ensure you have your product model and serial number ready when seeking assistance.
For a complete user manual with all diagrams and detailed settings, please refer to the official PDF document: Anern Hybrid Inverter User Manual (PDF).