Goodwe ES G2 Series Single Phase Low Voltage Hybrid Solar Inverter User Manual

1. Product Overview

The Goodwe ES G2 inverter, ranging from 3 to 6kW, is a single-phase hybrid inverter designed to increase self-consumption of generated solar energy by intelligently controlling energy flow. It features UPS-level switching to backup mode in less than 10ms, providing strong backup capability for heavy loads like air conditioners. Its smart and compact design offers great flexibility for various scenarios, supporting parallel connection for dependable backup power supply. With plug-and-play functionality and minimal weight, PV installations are quicker and easier. The ES G2 is compatible with a wide range of low voltage batteries, including GoodWe Lynx Home U batteries, making it an excellent choice for homeowners seeking high energy autonomy, reliable power, and affordable energy prices.

Figure 1: Front view of the Goodwe ES G2 Series Hybrid Inverter.

2. Setup and Installation

The Goodwe ES G2 Series Hybrid Inverter is designed for wall-mounted installation and features a plug-and-play design for quicker setup. Ensure the installation location is suitable for an IP65 rated device, protected from direct sunlight and excessive heat, and allows for natural convection cooling.

2.1 Mounting

• Choose a sturdy vertical surface capable of supporting the inverter's weight (approximately 20KG).
• Ensure adequate clearance around the inverter for proper ventilation and heat dissipation.
• Mount the inverter using appropriate hardware for wall mounting.

2.2 Electrical Connections

• Connect the PV strings to the designated DC input terminals. The inverter supports a maximum input current of 16A per MPPT.
• Connect the battery system (Li-ion or Lead-acid) to the battery input terminals. Ensure the battery voltage is within the 40-60V range.
• Connect the AC output to the utility grid for on-grid operation and to the backup load for off-grid functionality.
• Ensure all connections are secure and comply with local electrical codes.

Figure 2: Typical installation examples of Goodwe inverters in various global projects.

3. Operating Instructions

The ES G2 inverter features smart control and monitoring capabilities, allowing for efficient energy management.

3.1 User Interface

The inverter is equipped with an LED display, and optionally an LCD display, along with WLAN + APP connectivity for comprehensive monitoring and control. Refer to the specific model's user interface for detailed navigation.

3.2 Communication

Communication options include WiFi, LAN, or RS485 (optional), enabling smart home integration with multi-protocol communications and smart load control via dry contacts.

3.3 Power On/Off Sequence

1. Ensure all DC and AC connections are correctly made and secured.
2. Turn on the DC isolator switch for the PV array.
3. Turn on the battery disconnect switch.
4. Turn on the AC circuit breaker for the inverter.
5. Observe the inverter's display and indicator lights for normal operation.

4. Maintenance

Regular maintenance ensures optimal performance and longevity of your Goodwe ES G2 inverter.

• Cleaning: Periodically clean the inverter's exterior to prevent dust and debris buildup, especially around cooling fins. The inverter uses natural convection for cooling, so unobstructed airflow is crucial.
• Inspection: Regularly inspect all electrical connections for signs of wear, corrosion, or loosening.
• Performance Monitoring: Utilize the monitoring interface (LED/LCD/APP) to check system performance, energy production, and battery status.
• Firmware Updates: Keep the inverter's firmware updated as recommended by Goodwe to ensure access to the latest features and performance enhancements.

5. Troubleshooting

This section provides general guidance for common issues. For detailed troubleshooting, refer to the comprehensive manual available via the Goodwe support channels.

5.1 Common Issues and Solutions

• No Power Output: Check all DC and AC connections, ensure circuit breakers are on, and verify battery charge level.
• Low Energy Production: Inspect PV panels for shading or dirt. Check for any error codes on the inverter display.
• Inverter Fault Indicator: If a fault indicator is active, note the error code displayed (if any) and consult the detailed troubleshooting guide or contact support. The inverter features optional AFCI on the DC side and remote shutdown capabilities which can indicate specific issues.
• Communication Issues: Verify WiFi/LAN connection, check cable integrity for RS485, and ensure monitoring app is updated.

6. Specifications

7. Warranty and Support

The Goodwe ES G2 Series Hybrid Solar Inverter comes with a 5-year warranty. For technical support, service inquiries, or warranty claims, please contact your authorized Goodwe dealer or Goodwe customer service. Ensure you have your product model and serial number available when seeking support.

7.1 Communication Options

The inverter supports various communication methods including WiFi, LAN, or RS485 (optional) for remote monitoring and diagnostics, which can be helpful for support purposes.

8. User Tips

• Battery Compatibility: The ES G2 is compatible with both Lithium-ion and Lead-acid batteries, offering flexibility in system design.
• High Power Module Support: The inverter is designed for high-power module compatibility, supporting up to 16A DC input current per string.
• Backup Power: Leverage the strong backup power supply for critical loads during grid outages, with UPS-level switching in under 10ms.
• Monitoring: Regularly use the WLAN + APP interface for smart monitoring of your system's performance and energy consumption.