1. Introduction
This manual provides detailed instructions for the assembly, installation, operation, and troubleshooting of the Anern 4200W Hybrid Solar Inverter. Please read this manual carefully before installation and operation, and keep it for future reference. This multi-function inverter/charger combines the functions of an inverter, solar charger, and battery charger to provide uninterruptible power support in a compact size. Its comprehensive LCD display allows for user-configurable and easily accessible button operation for settings such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.
Key Features:
- Pure sine wave solar inverter
- Inverter operation without battery
- One-key restoration to factory settings
- Lithium battery automatic activation by PV
- Built-in 120A MPPT solar controller
- Max 6200W solar charge (for 4.2KW model)
- High PV input voltage range (60-450VDC)
- Built-in anti-dust kit for harsh environments
- Smart battery charge design to optimize battery life
- Dual AC output
- WIFI monitoring available for iOS and Android devices
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 the 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 the 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 a battery.
- NEVER charge a frozen battery.
- For optimum operation, select appropriate cable sizes as specified.
- 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, which could cause an explosion.
- Strictly follow the installation procedure when disconnecting AC or DC terminals.
- A 150A fuse is provided as over-current protection for the battery supply.
- GROUNDING INSTRUCTIONS: This inverter/charger must be connected to a permanent grounded wiring system. Comply with local requirements and regulations.
- NEVER cause AC output and DC input short circuits. Do NOT connect to the mains when DC input short circuits.
- Warning!! Only qualified service persons are able to service this device. If errors persist after following the troubleshooting table, send this inverter/charger back to a local dealer or service center for maintenance.
3. Product Overview
The Anern Hybrid Solar Inverter is designed for efficient energy management. Below is an overview of its main components and their functions.
Component Identification:
- 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
- WIFI communication/RS-232 port
- Battery communication/RS-485 port
4. Installation
4.1 Unpacking and Inspection
Before installation, inspect the unit. Ensure no damage occurred during shipping. The package should contain:
- The Inverter Unit x 1
- User Manual x 1
4.2 Preparation and Mounting
Before connecting any lines, remove the screws under the machine and the bottom cover plate.
When selecting a mounting location, consider the following:
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface, preferably concrete or other non-combustible material.
- Install the inverter at eye level for easy readability of the LCD display.
- Allow a clearance of approximately 20 cm to the sides and 50 cm above and below the unit for proper air circulation and heat dissipation.
- The ambient temperature should be between 0°C and 55°C for optimal operation.
- The recommended installation position is vertically adhered to the wall.
- Ensure sufficient space around the machine for adequate heat dissipation and wiring access.
Install the unit by screwing two M6 screws into the mounting surface.
4.3 Battery Connection
CAUTION: For safety and regulation compliance, install a separate DC over-current protector or disconnect device between the battery and inverter. All wiring must be performed by qualified personnel.
WARNING: It is critical to use appropriate cable sizes for battery connection to ensure system safety and efficient operation. Be cautious when working with metal tools near batteries to avoid short circuits or explosions.
| Model | Wire Size | Cable (mm²) | Torque Value (max) |
|---|---|---|---|
| 3.6KW/4.2KW/6.2KW | 1 x 2AWG | 25 | 2 Nm |
Connection Steps:
- Remove 18 mm of insulation sleeve for positive and negative conductors.
- Use bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
- Connect all battery packs as per the system diagram.
- Insert battery wires flatly into the inverter's battery connectors and tighten the bolts with a torque of 2 Nm in a clockwise direction. Ensure correct polarity: positive (+) to positive (+) and negative (-) to negative (-).
CAUTION: Before making the final DC connection or closing the DC breaker/disconnector, ensure positive (+) is connected to positive (+) and negative (-) to negative (-).
4.4 AC Input/Output Connection
CAUTION: Install a separate AC breaker between the inverter and the AC input power source (32A for 3.6KW/4.2KW, 50A for 6.2KW). Do NOT mis-connect input and output connectors. All wiring must be performed by qualified personnel.
| Model | Gauge | Cable (mm²) | Torque Value |
|---|---|---|---|
| 3.6KW/4.2KW | 12 AWG | 4 | 1.2 Nm |
| 6.2KW | 10 AWG | 6 | 1.2 Nm |
Connection Steps:
- Before making AC input/output connections, open the DC protector or disconnector.
- Remove 10 mm of insulation sleeve for six conductors. Shorten phase L and neutral conductor N by 3 mm.
- Insert AC input wires according to the polarities indicated on the terminal block (L-LINE: brown or black, N-Neutral: blue) and tighten the terminal screws.
- WARNING: Ensure the AC power source is disconnected before hardwiring to the unit.
- Insert AC output wires according to the polarities indicated on the terminal block (L-LINE: brown or black, N-Neutral: blue) and tighten the terminal screws.
- Ensure all wires are securely connected.
CAUTION: Appliances like air conditioners require 2-3 minutes to restart. If a power shortage occurs and recovers quickly, it can damage connected appliances. Check if your air conditioner has a time-delay function. Otherwise, the inverter may trigger an overload fault to protect the appliance, but internal damage might still occur.
4.5 PV Connection
CAUTION: Install a separate DC circuit breaker between the inverter and PV modules before connecting. All wiring must be performed by qualified personnel.
| Model | Wire Size | Cable (mm²) | Torque Value (max) |
|---|---|---|---|
| 3.6KW/4.2KW/6.2KW | 1 x 12AWG | 4 | 1.2 Nm |
PV Module Selection Guidelines:
- The Open Circuit Voltage (Voc) of PV modules must not exceed the maximum PV array open circuit voltage of the inverter (500Vdc).
- The Open Circuit Voltage (Voc) of PV modules should be higher than the minimum battery voltage.
- PV Array MPPT Voltage Range: 60Vdc~450Vdc.
Connection Steps:
- Remove insulation sleeve for 10 mm for positive and negative conductors.
- Use bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
- Check the correct polarity of wire connection from PV modules and PV input connectors. Connect the positive pole (+) of the connection wire to the positive pole (+) of the PV input connector. Connect the negative pole (-) of the connection wire to the negative pole (-) of the PV input connector. (Recommended tool: 4mm blade screwdriver).
4.6 Communication Connection
The inverter supports Wi-Fi and GPRS cloud communication for monitoring.
- Wi-Fi Cloud Communication (Optional): Use the supplied communication cable to connect to the inverter and the Wi-Fi module. Download the APP from the APP store and refer to the "Wi-Fi Plug Quick Installation Guideline" to set up the network and register. The inverter status will be shown via the mobile phone APP or a computer webpage.
- GPRS Cloud Communication (Optional): Use the supplied communication cable to connect to the inverter and the GPRS module, then apply external power to the GPRS module. Download the APP from the APP store and refer to the "GPRS RTU Quick Installation Guideline" to set up the network and register. The inverter status will be shown via the mobile phone APP or a computer webpage.
Lithium Battery Communication:
Communication between the battery and the inverter is achieved via the battery communication interface (Baud rate: 9600).
Lithium Battery and Inverter Connection:
Use power cables and communication cables for lithium batteries and inverters. Ensure correct polarity. The RJ45 connector of the communication cable connects to the BMS port on the inverter, and the other RJ45 connector connects to the RS485 port of the lithium battery. Before connecting, ensure both the lithium battery and inverter are turned off. Installing a circuit breaker for the power cables of the lithium battery and the inverter battery interface is recommended to prevent sparks.
| A-01 (Inverter BMS Port) | A-02 (Lithium Battery RS485 Port) |
|---|---|
| 1 | 7 |
| 2 | 8 |
| 8 | 6 |
| Empty pins are not connected | |
5. Operation
5.1 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.
5.2 Operation and Display Panel
The front panel of the inverter features an LCD display, three indicators, and four function keys to show operating status and input/output power information.
LED Indicators:
| LED Indicator | Color | Status | Message |
|---|---|---|---|
| INV/AC | Green | Solid On | Output is powered by utility in Line mode. |
| Flashing | Output is powered by battery or PV in battery mode. | ||
| CHG | Green | Solid On | Battery is fully charged. |
| Flashing | Battery is charging. | ||
| FAULT | Red | Solid On | Fault occurs in the inverter. |
| Flashing | Warning condition occurs in the inverter. |
Function Keys:
| 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 |
5.3 LCD Setting
Press and hold the ENTER button for 3 seconds to enter setting mode. Use UP/DOWN to select programs and ENTER to confirm or ESC to exit. Key configurable settings include:
- Program 00: Exit setting mode or one-button restore factory settings.
- Program 01: Output Source Priority:
- Utility First (U56): Utility provides power as first priority. Solar and battery power only when utility is unavailable.
- Solar First (S06): Solar energy provides power as first priority. If insufficient, utility supplies power. Battery powers loads only if solar and utility are unavailable or insufficient.
- SBU Priority (S6U): Utility provides power only when battery voltage drops below a set level.
- Program 02: Maximum Charging Current: Configures total charging current (utility + solar). Options from 10A to 60A (default).
- Program 03: AC Input Voltage Range:
- APL (Appliances): 90-280VAC.
- UPS: 170-280VAC.
- Program 05: Battery Type: Options include AGM, Flooded, User-Defined, and specific Lithium battery communication modes (LIP for PACE 485 BMS, LIL for PYLON 485 BMS).
- Program 30: Battery Equalization: Enable or disable battery equalization function.
- Program 37: GRID-tie Operation:
- Off Grid (OFF): Inverter operates only in off-grid mode. Solar energy powers loads first, then charges.
- Hybrid (HYD): Inverter operates in hybrid mode. Solar energy powers loads first, then charges, with excess energy fed to the grid.
5.4 Battery Equalization
Battery equalization reverses negative chemical effects like stratification and removes sulfate crystals, extending battery life. It can be applied by setting an equalization interval (Program 35) or activating it immediately (Program 36).
Equalize Charging Process:
During equalization, the controller supplies power to charge the battery until it reaches the equalization voltage. It then maintains this voltage. If the battery doesn't reach the equalization voltage within the set time, the controller extends the time. If it still doesn't reach the voltage after the timeout, equalization stops, and the system returns to float stage.
5.5 Mains and Lithium Battery Activation Function
- After 90 seconds of mains power connection, the inverter connects to the mains and starts operation.
- If the inverter is in lithium battery mode (LIP or LIL) and the battery is not connected, the mains activation function is automatically enabled upon mains connection.
6. Maintenance
6.1 Anti-Dust Kit Clearance and Maintenance
The inverter comes with a pre-installed anti-dust kit. This kit helps maintain internal temperature and prevents dust accumulation, enhancing product reliability.
Cleaning Procedure:
- 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.
7. Troubleshooting
This section provides solutions for common issues. If problems persist, contact a qualified service person.
| Problem | LCD/LED/Buzzer Indication | 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 far too low (<1.4V/Cell) 2. Internal fuse tripped. | 1. Contact repair center for fuse replacement. 2. Re-charge battery. 3. Replace battery. |
| 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/long. 2. Check generator (if applied) or input voltage range setting. |
| Green LED is flashing. | "Solar First" set as priority of output source. | Change output source priority to Utility first. | |
| When unit is turned on, internal relay switches on/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 overload 110% and time is up. | Reduce connected load. |
| Fault code 05 | Output short circuited. | Check wiring, remove abnormal load. | |
| Fault code 02 | Temperature of internal converter component over 120°C / 100°C. | Check air flow, ambient temperature. | |
| Fault code 03 | Battery is over-charged / voltage too high. | Return to repair center / Check battery specs. | |
| Fault code 01 | Fan fault. | Replace the fan. | |
| Fault code 06/58 | Output abnormal (voltage below 190Vac or above 260Vac). | 1. Reduce connected load. 2. Return to repair center. | |
| Fault code 08/09/53/57 | Internal components failed. | Return to repair center. | |
| Fault code 51 | Over current or surge. | Restart unit. If error persists, return to repair center. | |
| Fault code 52 | Bus voltage is too low. | Restart unit. If error persists, return to repair center. | |
| Fault code 55 | Output voltage is unbalanced. | Restart unit. If error persists, return to repair center. |
Warning Indicators (Lithium Battery Mode):
| Warning Code | Warning Event | Warning Condition |
|---|---|---|
| 04 | The battery voltage is too low | Minimum lithium battery cell voltage <2.85V; Total lithium battery voltage <42V (48V system) or <22.4V (24V system). |
| 05 | The battery voltage is too high | Maximum lithium battery cell voltage >3.55V; Total lithium battery voltage >54V (48V system) or >28.8V (24V system). |
| 06 | The battery is low warning | Remaining battery capacity ≤10%. |
8. Specifications
8.1 Line Mode Specifications
| Parameter | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Input Voltage Waveform | Sinusoidal (utility or generator) | ||
| Nominal Input Voltage | 230Vac | ||
| Low Loss Voltage (UPS) | 170Vac±7V | ||
| Low Loss Voltage (Appliances) | 90Vac±7V | ||
| Low Loss Return Voltage (UPS) | 180Vac±7V | ||
| Low Loss Return Voltage (Appliances) | 100Vac±7V | ||
| 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 (UPS) | 10ms typical | ||
| Transfer Time (Appliances) | 20ms typical | ||
8.2 Inverter Mode Specifications
| Parameter | 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 (@load < 50%) | 22.0Vdc | 44.0Vdc | |
| Low DC Warning Voltage (@load ≥ 50%) | 21.0Vdc | 42.0Vdc | |
| Low DC Warning Return Voltage (@load < 50%) | 22.5Vdc | 45.0Vdc | |
| Low DC Warning Return Voltage (@load ≥ 50%) | 22.0Vdc | 44.0Vdc | |
| Low DC Cut-off Voltage (@load < 50%) | 20.5Vdc | 41.0Vdc | |
| Low DC Cut-off Voltage (@load ≥ 50%) | 20.0Vdc | 40.0Vdc | |
| High DC Recovery Voltage | 32Vdc | 62Vdc | |
| High DC Cut-off Voltage | 33Vdc | 63Vdc | |
| No Load Power Consumption | 30W | 35W | 50W |
8.3 Two Load Output Power
| Parameter | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Full Load | 3600W | 4200W | 6200W |
| Maximum Main Load | 3600W | 4200W | 6200W |
| Second Load Range | 720W~2520W | 840W~2940W | 1240W~4340W |
| Main Load Cut Off Voltage | 26VDC | ||
| Main Load Return Voltage | 27VDC | ||
8.4 Charge Mode Specifications
| Parameter | 3.6KW | 4.2KW | 6.2KW |
|---|---|---|---|
| Charging Algorithm | 3-Step | ||
| AC Charging Current (Max) | 100Amp (@VI/P=230Vac) | ||
| Bulk Charging Voltage (Flooded Battery) | 29.2 | 58.4 | |
| Bulk Charging Voltage (AGM / Gel Battery) | 28.2 | 56.4 | |
| Floating Charging Voltage | 27Vdc | 54Vdc | |
| 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 |
8.5 Grid-Tie Operation Specifications
| Parameter | 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 | 50±1Hz/60±1Hz | ||
| Nominal Output Current | 15.7A | 18.2A | 26.9A |
| Power Factor Range | >0.99 | ||
| Maximum Conversion Efficiency (DC/AC) | 97% | ||
8.6 General Specifications
| Parameter | Value |
|---|---|
| Brand Name | ANERN |
| Model Number | AN-SCI-ECO-4200W |
| Size | Unit: 358x442x116mm (Package: 550*430*210mm) |
| Weight | Unit: 8.0kg (Package: 10kg) |
| Output Type | DUAL |
| Output Frequency | 50/60Hz |
| Output Current | 18A |
| Is Smart Device | Yes |
| Origin | Mainland China |
| Certification | CE, RoHS |
| High-concerned chemical | None |
| EU LVD Voltage | High voltage: Above 50Vac or 75Vdc |
| Operating Temperature Range | -10°C to 50°C |
| Storage Temperature | -15°C~60°C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
9. User Tips
Based on available user feedback, the Anern 4200W Hybrid Solar Inverter offers an excellent price-quality ratio.
No specific operational tips or common issues were identified from the provided user reviews.
10. Warranty and Support
The Anern 4200W Hybrid Solar Inverter comes with a 2-year warranty.
For technical support, service, or warranty claims, please contact your local dealer or authorized service center. Refer to the product packaging or official website for specific contact information.
A user manual in PDF format is available for download: View User Manual (PDF)