1. Product Overview
The ANENJI 4.5KVA 4.2KW 24V Hybrid Solar Inverter with MPPT 230V is a versatile device designed for both on-grid and off-grid photovoltaic systems. It features a 100A solar charge controller and supports PV input voltages from 60-500V. This model, ANJ-4000W-24V WIFI, includes built-in WiFi for remote monitoring.
1.1 Key Features
- Pure Sine Wave Output: Delivers stable power suitable for all sensitive devices.
- Power Factor 1.0: Maximizes energy utilization and power transmission efficiency.
- Wide PV Input Voltage Range: Supports 60Vdc - 500Vdc for flexible solar panel connections.
- 100A MPPT Controller: Integrates Maximum Power Point Tracking technology for optimal solar power extraction.
- Lithium Battery Activation: Can be activated by mains or PV for efficient lithium battery operation and maintenance.
- LiFePO4 Battery Compatibility: Connects to LiFePO4 batteries via RS485 interface for enhanced safety and lifespan.
- Battery-Free Operation: Capable of working without a battery for continuous power supply.
- Detachable Dust Cover: Protects the inverter from dust and debris in harsh environments.
- WiFi Remote Monitoring: Allows users to track system status and control remotely.
- Multiple Output Priority Support: Configurable output priority (UTL, SOL, SBU, SUB) for flexible power management.
- Battery Optimization Function (EQ): Improves battery performance and extends its lifecycle.
1.2 Product Video
Video: A 360-degree view of the ANENJI Hybrid Solar Inverter, showcasing its design and various ports.
1.3 Product Views and Components
The inverter features a clear LCD display and various connection ports for comprehensive system integration.
Image: Product Overview with numbered components.
- LCD display
- Status indicator
- Charging indicator
- Fault indicator
- Function buttons
- Power on/off switch
- AC input
- AC output
- PV input
- Battery input
- RS232 communication port
- RS485 communication port
- Wire outlet hole
- Grounding
Image: Front view of the ANENJI Hybrid Solar Inverter.
Image: Side view of the inverter, showing the product label with model and serial number.
Image: Rear view of the inverter, detailing AC input/output, PV input, and battery terminals.
1.4 Packing List
- 1x ANENJI Hybrid Solar Inverter
- 1x User Manual
2. Installation
2.1 Unpacking and Inspection
Before installation, carefully inspect the unit for any damage. Ensure all items listed in the packing list are present.
2.2 Preparation
Before connecting any wiring, remove the bottom cover by unscrewing the two screws as shown in the diagram below.
Image: Diagram illustrating the removal of the inverter's bottom cover.
2.3 Mounting the Unit
Observe the following guidelines when selecting a mounting location:
- Do not mount the inverter on flammable construction materials.
- Mount the unit on a solid surface.
- Install the inverter at eye level for easy reading of the LCD display.
- Ensure the ambient temperature is between 0°C and 55°C for optimal operation.
- Adhere to the recommended vertical wall installation position.
- Maintain sufficient clearance around the unit for heat dissipation and wire access, as shown in the diagram.
Image: Mounting dimensions and recommended clearances (20cm sides, 50cm top/bottom).
WARNING: Suitable for mounting on concrete or other non-combustible surface only.
2.4 Battery Connection
CAUTION: For safety and regulation compliance, install a separate DC over-current protector or disconnect device between the battery and inverter. Over-current protection is required.
WARNING: All wiring must be performed by qualified personnel. Use appropriate cable for battery connection to reduce risk of injury.
Recommended battery cable, stripping length (L2), and tinning length (L1):
| Model | Maximum Amperage | Battery Capacity | Wire Size | Cable mm² | L1 (mm) | L2 (mm) | Torque Value |
|---|---|---|---|---|---|---|---|
| All Models | 137A | 100AH | 2AWG | 38 | 3 | 18 | 2~3 Nm |
Steps for battery connection:
- Remove 18 mm of insulation sleeve from positive and negative cables.
- Connect all battery packs as required.
- Insert battery cables into the inverter's battery connector and tighten bolts with a torque of 2-3 Nm. Ensure correct polarity.
2.5 AC Input/Output Connection
CAUTION: Install a separate AC breaker between the inverter and AC input power source. Recommended spec: 50A. Do not mis-connect input and output connectors.
WARNING: All wiring must be performed by qualified personnel. Use appropriate cable for AC input connection.
Suggested cable requirement for AC wires:
| Model | Gauge | Torque Value |
|---|---|---|
| 1.5KVA | 12AWG | 1.4~1.6Nm |
| 4KVA | 10AWG | 1.4~1.6Nm |
| 5.5KVA/6.2KVA | 8 AWG | 1.4~1.6Nm |
Steps for AC input/output connection:
- Before making AC input/output connection, ensure the DC protector or disconnector is open.
- Remove 10mm of insulation sleeve for six conductors. Shorten phase L and neutral conductor N by 3mm.
- Insert AC input wires according to polarities (L, N, PE) indicated on the terminal block and tighten screws. Connect PE protective conductor (yellow-green) first.
- Insert AC output wires according to polarities (L, N, PE) and tighten screws. Connect PE protective conductor first.
- Ensure all wires are securely connected.
CAUTION: Connect AC wires with correct polarity. Reversed L and N wires may cause utility short-circuit in parallel operation.
CAUTION: Appliances like air conditioners require a 2-3 minute restart delay. If power fluctuates rapidly, it can damage connected appliances. Check if your appliances have time-delay functions.
2.6 PV Connection
CAUTION: Install a separate DC circuit breaker between the inverter and PV modules.
WARNING: All wiring must be performed by qualified personnel. Use appropriate cable for PV module connection.
PV Module Wire Connection steps:
- Remove 10 mm of insulation sleeve for positive and negative conductors.
- Check correct polarity of connection cable from PV modules and PV input connectors. Connect positive pole (+) to positive pole (+) and negative pole (-) to negative pole (-).
- Ensure wires are securely connected.
2.7 Final Assembly
After connecting all wirings, replace the bottom cover by screwing in the two screws.
3. Operation
3.1 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.
3.2 Operation and Display Panel
The front panel features an LCD display, three indicators, and four function keys to show operating status and power information.
Image: Product characteristics highlighting key features like Pure Sine Wave, Power Factor 1.0, MPPT, Lithium Battery Activation, and WiFi monitoring.
LED Indicators:
| LED Indicator | Color | Status | Message |
|---|---|---|---|
| AC/INV | 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 |
3.3 LCD Setting
Press and hold the ENTER button for 3 seconds to enter setting mode. Use "UP" or "DOWN" to select programs, then "ENTER" to confirm or "ESC" to exit.
Key settings include:
- Program 01: Output Source Priority
- Solar First (SOL): Solar energy powers loads first. Battery energy assists if solar is insufficient. Utility powers loads only if solar is unavailable or battery voltage drops.
- Utility First (UTL) (Default): Utility powers loads first. Solar and battery energy assist if utility is unavailable.
- SBU Priority (SBU): Solar energy powers loads first. Battery energy assists if solar is insufficient. Utility powers loads only if solar is unavailable or battery voltage drops.
- SUB Priority (SUB): Solar energy charges battery first, then powers loads. Utility assists if solar is insufficient. (Note: SUB priority is for PVmax=500Vdc models only).
- Program 02: Maximum Charging Current
Configures total charging current for solar and utility chargers. Range is from Max. AC charging current to Max. charging current of SPEC, but not less than AC charging current (Program 11).
- Program 03: AC Input Voltage Range
- Appliances (APL) (Default): 90-280VAC.
- UPS (UPS): 170-280VAC.
- Generator (GEN): 170-280VAC, compatible with generators.
- Program 05: Battery Type
- AGM (AGn) (Default)
- Flooded (FLD)
- User-Defined (USE): Allows setting battery charge voltage and low DC cut-off voltage in programs 26, 27, and 29.
- Li2 (Lithium): Supports PYLON US2000 Protocol 3.5 Version.
- Li4 (Lithium): Standard communication Protocol from inverter supplier.
- Program 06/07: Auto Restart
Enables or disables auto restart when overload or over temperature occurs.
- Program 09: Output Frequency
Sets output frequency to 50Hz or 60Hz.
- Program 10: Auto Bypass
When set to "auto", if mains power is normal, it will automatically bypass even if the switch is off.
- Program 11: Maximum Utility Charging Current
Sets the maximum charging current from utility.
- Program 12: Setting Voltage Point Back to Utility Source
Defines the battery voltage threshold at which the system switches back to utility source when in SBU or Solar First priority.
- Program 13: Setting Voltage Point Back to Battery Mode
Defines the battery voltage threshold at which the system switches back to battery mode when in SBU or Solar First priority.
- Program 18: Buzzer Mode
Configures when the buzzer sounds (mute, input source change/warning/fault, warning/fault only).
- Program 19: Auto Return to Default Display Screen
Sets whether the display returns to default (input/output voltage) after 1 minute of inactivity or stays on the last screen.
- Program 20: Backlight Control
Enables or disables the LCD backlight.
- Program 23: Overload Bypass
When enabled, the unit transfers to line mode if an overload occurs in battery mode.
- Program 25: Modbus ID Setting
Sets the Modbus ID (001-247).
- Program 26: Bulk Charging Voltage (C.V voltage)
Sets the bulk charging voltage for user-defined battery types. Must be ≥ Program 27 value.
- Program 27: Floating Charging Voltage
Sets the floating charging voltage for user-defined battery types.
- Program 29: Low DC Cut-off Voltage
Sets the low DC cut-off voltage for user-defined battery types. Must be < Program 12 value.
- Program 32: Bulk Charging Time (C.V stage)
Sets the duration for bulk charging (5-900 minutes) or automatically.
- Program 33: Battery Equalization
Enables or disables battery equalization.
- Program 34: Battery Equalization Voltage
Sets the voltage for battery equalization.
- Program 35: Battery Equalized Time
Sets the duration for battery equalization (0-900 minutes).
- Program 36: Battery Equalized Timeout
Sets the timeout for battery equalization (0-900 minutes).
- Program 37: Equalization Interval
Sets the interval between battery equalization cycles (1-90 days).
- Program 39: Equalization Activated Immediately
Activates battery equalization immediately or cancels it.
- Program 41: Automatic Activation for Lithium Battery
Enables automatic activation for lithium batteries when not detected.
- Program 42: Manual Activation for Lithium Battery
Allows manual activation for lithium batteries when not detected.
- Program 43: Setting SOC Point Back to Utility Source
Sets the State of Charge (SOC) threshold for switching back to utility source.
- Program 44: Setting SOC Point Back to Battery Mode
Sets the State of Charge (SOC) threshold for switching back to battery mode.
- Program 45: Low DC Cut-off SOC
Sets the low DC cut-off State of Charge (SOC).
- Program 46: Maximum Discharge Current Protection
Enables or disables discharge current protection and sets the maximum discharge current (20A-500A).
3.4 Setting for PYLON US2000 Lithium Battery
For PYLONTECH US2000 lithium batteries, specific dip switch settings are required for baud rate and battery group address. Dip switch 1 should be ON for 9600 baud rate. Dip switches 2, 3, and 4 are for battery group address.
Process of Install:
- Use the RS485 cable to connect the inverter and Lithium battery.
- Switch on the Lithium battery.
- Press the Lithium battery power button for more than three seconds to start it.
- Turn on the inverter.
- Select battery type "Li2" in LCD program 05. The battery icon on the LCD display will light up if communication is successful.
3.5 Setting for Lithium Battery Without Communication
If using a lithium battery without BMS communication, follow these steps:
- Obtain battery BMS specifications (Max charging voltage, Max charging current, Discharging protection voltage).
- Set battery type as "USE" (user-defined) in Program 05.
- Set C.V voltage as Max charging voltage of BMS - 0.5V in Program 26.
- Set floating charging voltage as C.V voltage in Program 27.
- Set Low DC cut-off voltage ≥ discharging protection voltage of BMS + 2V in Program 29.
- Set Max charging current (Program 02) to be less than the Max charging current of BMS.
- Set Program 12 (Setting voltage point back to utility source) to be ≥ Low DC cut-off voltage + 1V.
4. Maintenance
4.1 Battery Equalization
Battery equalization reverses the buildup of negative chemical effects like stratification and removes sulfate crystals, which can reduce battery capacity. It is recommended to equalize batteries periodically.
How to Apply Equalization Function:
Enable battery equalization in LCD setting program 33. Then, apply it by either:
- Setting the equalization interval in program 37.
- Activating equalization immediately in program 39.
When to Equalize:
In the float stage, when the set equalization interval is reached or equalization is activated immediately, the controller will enter the Equalize stage.
Image: Graph showing battery voltage stages during equalization (Bulk, Absorption, Float, Equalize).
Equalize Charging Time and Timeout:
During the Equalize stage, the controller charges the battery until it reaches the battery equalization voltage. Constant-voltage regulation maintains this voltage until the set equalized time is reached. If the battery voltage does not reach the equalization point within the set time, the charge controller extends the equalized time. If the voltage is still low after the timeout, equalization stops, and the system returns to the float stage.
5. Troubleshooting
5.1 Fault Reference Codes
The inverter displays fault codes to indicate specific issues:
| Fault Code | Fault Event | Icon on Display |
|---|---|---|
| 01 | Over temperature of inverter module | 01 ERROR |
| 02 | Over temperature of DCDC module | 02 ERROR |
| 03 | Battery voltage is too high | 03 ERROR |
| 04 | Over temperature of PV module | 04 ERROR |
| 05 | Output short circuited | 05 ERROR |
| 06 | Output voltage is too high | 06 ERROR |
| 07 | Overload time out | 07 ERROR |
| 08 | Bus voltage is too high | 08 ERROR |
| 09 | Bus soft start failed | 09 ERROR |
| 10 | PV over current | 10 ERROR |
| 11 | PV over voltage | 11 ERROR |
| 12 | DCDC over current | 12 ERROR |
| 13 | Over current or surge | 13 ERROR |
| 14 | Bus voltage is too low | 14 ERROR |
| 15 | Inverter failed (Self-checking) | 15 ERROR |
| 18 | Op current offset is too high | 18 ERROR |
| 19 | Inverter current offset is too high | 19 ERROR |
| 20 | DC/DC current offset is too high | 20 ERROR |
| 21 | PV current offset is too high | 21 ERROR |
| 22 | Output voltage is too low | 22 ERROR |
| 23 | Inverter negative power | 23 ERROR |
5.2 Warning Indicators
The inverter displays warning codes for non-critical issues:
| Warning Code | Warning Event | Audible Alarm | Icon Flashing |
|---|---|---|---|
| 02 | Temperature is too High | Beep three times every second | 02 WARNING |
| 04 | Low battery | Beep once every second | 04 WARNING |
| 07 | Overload | Beep once every 0.5 second | 07 WARNING |
| 10 | Output power derating | Beep twice every 3 seconds | 10 WARNING |
| 14 | Fan blocked | None | 14 WARNING |
| 15 | PV energy is low | Beep twice every 3 seconds | 15 WARNING |
| 19 | Lithium Battery communication is failed | Beep once every 0.5 second | 19 WARNING |
| 21 | Lithium Battery over current | None | 21 WARNING |
| E9 | Battery equalization | None | E9 WARNING |
| bP | Battery is not connected | None | bP WARNING |
5.3 Common Troubleshooting
| 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. | The battery voltage is too low. | 1. Re-charge battery. 2. Replace battery. |
| No response after power on. | No indication. | 1. Battery voltage is too low. 2. Battery polarity is reversed. | 1. Check battery connections. 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. | |
| 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) is working well or if input voltage range setting is correct. |
| 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 overloaded 110% and time is up. | Reduce connected load by switching off some equipment. |
| Fault code 05 | Output short circuited. | Check if wiring is connected well and remove abnormal load. | |
| Fault code 02 | Internal temperature of inverter component is over 100°C. | Check whether air flow is blocked or ambient temperature is too high. | |
| Fault code 03 | Battery is over-charged. The battery voltage is too high. | Return to repair center. Check if battery specs and quantity meet requirements. | |
| Fault code 06/22 | Output abnormal (Inverter voltage below 190Vac or higher than 260Vac). | 1. Reduce connected load. 2. Return to repair center. | |
| Fault code 08/09/15 | Internal components failed. | Return to repair center. | |
| Fault code 13 | Over current or surge. | Restart the unit. If error persists, return to repair center. | |
| Fault code 14 | Bus voltage is too low. | If wires are connected well, return to repair center. |
6. Specifications
6.1 Line Mode Specifications (Table 1)
| INVERTER MODEL | 1.5KVA (PVmax=160V) | 4KVA | 5.5KVA | 6.2KVA |
|---|---|---|---|---|
| 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 | Battery mode: Electronic Circuits | |||
| Efficiency (Line Mode) | >95% (Rated R load, battery full charged) | |||
| Transfer Time | 10ms typical (UPS); 20ms typical (Appliances) | |||
6.2 Inverter Mode Specifications (Table 2)
| INVERTER MODEL | 1.5KVA (PVmax=160V) | 4KVA | 5.5KVA | 6.2KVA |
|---|---|---|---|---|
| Rated Output Power | 1.5KVA/1.5KW | 4KVA/4KW | 5.5KVA/5.5KW | 6.2KVA/6.2KW |
| Output Voltage Waveform | Pure Sine Wave | |||
| Output Voltage Regulation | 230Vac±5% | |||
| Output Frequency | 50Hz or 60Hz | |||
| Peak Efficiency | 94% | |||
| Surge Capacity | 2* rated power for 5 seconds | |||
| Nominal DC Input Voltage | 12Vdc | 24Vdc | 48Vdc | |
| Cold Start Voltage | 11.0Vdc | 23.0Vdc | 46.0Vdc | |
| Low DC Warning Voltage (Just for AGM and Flooded) | ||||
| @ load < 20% | 11.0Vdc | 22.0Vdc | 44.0Vdc | |
| @ 20% ≤ load < 50% | 10.7Vdc | 21.4Vdc | 42.8Vdc | |
| @ load ≥ 50% | 10.1Vdc | 20.2Vdc | 40.4Vdc | |
| Low DC Warning Return Voltage (Just for AGM and Flooded) | ||||
| @ load < 20% | 11.5Vdc | 23.0Vdc | 46.0Vdc | |
| @ 20% ≤ load < 50% | 11.2Vdc | 22.4Vdc | 44.8Vdc | |
| @ load ≥ 50% | 10.6Vdc | 21.2Vdc | 42.4Vdc | |
| Low DC Cut-off Voltage (Just for AGM and Flooded) | ||||
| @ load < 20% | 10.5Vdc | 21.0Vdc | 42.0Vdc | |
| @ 20% ≤ load < 50% | 10.2Vdc | 20.4Vdc | 40.8Vdc | |
| @ load ≥ 50% | 9.6Vdc | 19.2Vdc | 38.4Vdc | |
6.3 Charge Mode Specifications (Table 3)
| UTILITY CHARGING MODE | 1.5KVA (PVmax=160V) | 4KVA | 5.5KVA | 6.2KVA |
|---|---|---|---|---|
| Max Charging Current (PV+AC) (@VI/P=230Vac) | 120Amp | 100Amp | 100Amp | 120Amp |
| Max Charging Current (AC) (@VI/P=230Vac) | 80Amp | |||
| Bulk Charging Voltage (Flooded Battery) | 14.6Vdc | 29.2Vdc | 58.4Vdc | |
| Bulk Charging Voltage (AGM / Gel Battery) | 14.1Vdc | 28.2Vdc | 56.4Vdc | |
| Floating Charging Voltage | 13.5Vdc | 27Vdc | 54Vdc | |
| Overcharge Protection | 15.5 Vdc | 33Vdc | 63Vdc | |
| Charging Algorithm | 3-Step | |||
6.4 Solar Input Specifications (Table 3 continued)
| INVERTER MODEL | 1.5KVA (PVmax=160V) | 4KVA | 5.5KVA | 6.2KVA | |
|---|---|---|---|---|---|
| Rated Power | 900W | 1500W | 4000W | 5500W | 6500W |
| Max. PV Array Open Circuit Voltage | 160Vdc | 500Vdc | |||
| PV Array MPPT Voltage Range | 30Vdc~160Vdc | 60Vdc~500Vdc | |||
| Max. Input Current | 30A | 50A | 15A | 18A | 27A |
| Max. Charging Current(PV) | 60A | 100A | 120A | ||
6.5 General Specifications (Table 4)
| INVERTER MODEL | 1.5KVA (PVmax=160V) | 4KVA | 5.5KVA | 6.2KVA |
|---|---|---|---|---|
| Operating Temperature Range | -10°C to 55°C | |||
| Storage Temperature | -15°C~60°C | |||
| Humidity | 5% to 95% Relative Humidity (Non-condensing) | |||
| Dimension (D*W*H), mm | 358x295x105 | 438x295x105 | ||
| Net Weight, kg | 5.8 | 6.2 | 8.2 | 8.7 |
7. User Tips
- Lithium Battery Compatibility: The inverter is compatible with lead-acid batteries (AGM, Flooded) and lithium batteries (LiFePO4). Ensure you select the correct battery type in Program 05 of the LCD settings for optimal performance and safety.
- WiFi Monitoring: For models ANJ-4000W-24V-WIFI and 6200W, built-in WiFi is available for remote monitoring. These models do not include an RS232 interface.
- Initial Setup for Lithium Batteries: When setting up with lithium batteries, it is crucial to complete all necessary settings (Programs 05, 26, 27, 29, 43, 44, 45) before turning on the inverter's output. This prevents potential issues with battery voltage detection and charging.
8. Warranty and Support
For detailed warranty information, service, and technical support, please refer to the complete user manual PDF. This document provides comprehensive details on product guarantees and how to obtain assistance.
You can access the full user manual PDF here: ANENJI Hybrid Solar Inverter User Manual (PDF)
