SRGFTS SUMRY EP-4000L Hybrid Solar Inverter User Manual

1. Introduction

The SRGFTS SUMRY EP-4000L Hybrid Solar Inverter is an advanced all-in-one power solution designed for various applications, including RVs, caravans, camping, and home backup systems. This unit integrates a pure sine wave inverter, an MPPT solar charge controller, and an AC battery charger into a single device. It offers flexible power management by supporting both 12V and 24V battery systems, providing 2000W (12V) or 3500W (24V) of continuous power output. Equipped with comprehensive safety features and real-time monitoring capabilities, it ensures reliable and efficient energy conversion.

2. Safety Information

Please read and understand all safety instructions before installation and operation. Failure to follow these instructions may result in electric shock, fire, severe injury, or death.

• Qualified Personnel: Installation and wiring must be performed by qualified personnel in accordance with all applicable electrical codes and standards.
• Electrical Shock Hazard: This inverter operates with high voltages. Do not attempt to open or service the unit unless you are qualified. Disconnect all power sources (AC, DC, and PV) before performing any maintenance or wiring.
• Battery Safety: Work with batteries carefully. Wear eye protection and appropriate clothing. Batteries can produce explosive gases; ensure adequate ventilation.
• Ventilation: Ensure the inverter is installed in a well-ventilated area to prevent overheating. Do not block ventilation openings.
• Environment: Do not install the inverter in areas with flammable materials, corrosive gases, or excessive moisture.
• Grounding: The inverter must be properly grounded.
• GFCI Protection: The integrated GFCI provides essential leakage current protection. Do not bypass or disable this feature.

3. Product Overview

The SUMRY EP-4000L is a versatile hybrid solar inverter designed for optimal energy management.

Key Features:

• Dual Battery System Compatibility: Works with both 12V and 24V battery systems.
• High Power Output: 2000W continuous for 12V systems (4000W peak) and 3500W continuous for 24V systems (7000W peak).
• Integrated MPPT Charge Controller: Built-in 20A MPPT solar charge controller with a PV input voltage range of 15V-60VDC and a maximum PV input power of 500 watts.
• AC Battery Charger: Includes a 100A AC battery charger.
• Pure Sine Wave Output: Provides stable 220V/230V/240V AC output, suitable for sensitive electronics.
• GFCI Protection: Essential Ground Fault Circuit Interrupter for leakage protection, especially critical for RV applications.
• User-Friendly Interface: LCD display for operational status and parameter settings.
• Remote Monitoring: Built-in WiFi module for remote monitoring and Bluetooth for proximal sampling.
• Flexible Charging/Output Priority: Configurable priority settings for solar panels, battery, or utility power.

Product Components:

This image displays the front panel of the SRGFTS SUMRY EP-4000L Hybrid Solar Inverter, highlighting its integrated LCD screen for status monitoring and user interface buttons for configuration.

This diagram visually explains the multi-functional capabilities of the inverter, combining an MPPT solar charge controller (20A, 15-48VDC PV input, 500W max), a power inverter (2000W/3500W, 230VAC output), and a 100A AC battery charger, adaptable for 12V/24V batteries.

This illustration demonstrates the inverter's versatility, supporting both 12V (2000W output) and 24V (3500W output) battery systems. It is compatible with multiple battery chemistries including GEL, Lithium (Li), AGM, User-defined, and Flooded (FLD) types, shown integrated into a recreational vehicle power system.

4. Setup and Installation

Proper installation is crucial for the safe and efficient operation of your hybrid solar inverter. It is highly recommended that installation be performed by a certified electrician or qualified professional.

4.1 Mounting the Inverter

• Choose a dry, well-ventilated area away from direct sunlight, heat sources, and flammable materials.
• Ensure sufficient clearance around the inverter for proper airflow (at least 20 cm on all sides).
• Mount the inverter vertically on a sturdy surface using appropriate fasteners.

4.2 Wiring Connections

All wiring must comply with local and national electrical codes. Use appropriately sized cables for all connections.

1. Battery Connection:
   • Connect the battery cables to the inverter's DC terminals, ensuring correct polarity (positive to positive, negative to negative).
   • Confirm your battery system voltage (12V or 24V) matches the inverter's configuration. The inverter automatically adapts to 12V or 24V systems.
2. PV (Solar Panel) Connection:
   • Connect the solar panel array to the inverter's PV input terminals.
   • Ensure the PV input voltage (15V-60VDC) and maximum power (500W) are within the inverter's specifications.
3. AC Input (Utility/Generator) Connection:
   • Connect the AC utility grid or generator to the inverter's AC input terminals.
   • This inverter is designed for 220V/230V/240V single-phase voltage input. It is NOT compatible with 110V split-phase voltage.
4. AC Output (Load) Connection:
   • Connect your AC loads (appliances) to the inverter's AC output terminals.
   • Ensure the total load does not exceed the inverter's rated output power (2000W for 12V, 3500W for 24V).
   • The integrated GFCI provides leakage protection for connected loads.
5. Grounding:
   • Connect the inverter's grounding terminal to a reliable earth ground.

This image depicts the SUMRY inverter installed within an RV kitchen environment, highlighting its suitability for mobile living and the critical role of its GFCI protection for connected appliances such as a coffee maker and toaster oven.

5. Operating Instructions

Once installed, the inverter can be configured and monitored through its LCD display and integrated communication modules.

5.1 Initial Power-Up

1. Ensure all wiring connections are secure and correct.
2. Turn on the battery breaker/switch.
3. Turn on the PV (solar panel) breaker/switch.
4. Turn on the AC input (utility/generator) breaker/switch.
5. The inverter will perform a self-test and the LCD display will illuminate.

5.2 LCD Display and Control Buttons

The LCD display provides real-time operational status, input/output information, and allows for parameter configuration. Use the control buttons (ESC, UP, DOWN, ENTER) to navigate menus and adjust settings.

This image showcases the inverter's monitoring capabilities, featuring a detailed LCD display for operational status and input/output information, alongside a smartphone interface for remote monitoring via the integrated WiFi module and proximal sampling via Bluetooth.

5.3 Parameter Settings

Key parameters that can be set include:

• Battery Type: Select the appropriate battery type (AGM, Lithium, LiFePO4, User-defined, etc.) for optimal charging.
• Charging Current: Adjust the battery charging current from AC or solar.
• Input Source Priority: Configure the priority for charging (e.g., Solar First, Solar and Utility, Only Solar).
• Output Source Priority: Set the priority for powering loads (e.g., Solar (SOL), Utility (UTI), Solar-Battery-Utility (SBU)).

This diagram explains the flexible charging and output priority settings of the hybrid inverter. It supports three input charging modes: Solar First, Solar and Utility, and Only Solar. It also offers three output priority modes: Solar (SOL), Utility (UTI), and Solar-Battery-Utility (SBU), allowing for optimized energy management in various scenarios like RVs.

5.4 Remote Monitoring

The built-in WiFi module allows for remote monitoring of the inverter's performance via a dedicated smartphone application. Bluetooth functionality enables local monitoring and data access.

This graphic compares the output waveform of the SUMRY inverter (Pure Sine Wave) with a Modified Sine Wave, illustrating the SUMRY inverter's high compatibility and stable, grid-like 230VAC output, suitable for sensitive electronic devices.

This image illustrates the diverse applications of the SUMRY inverter, including use in homes, during camping trips, and for RV travel, demonstrating its ability to power common appliances like refrigerators, washing machines, microwave ovens, coffee makers, and kettles.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your inverter.

• Cleaning: Periodically clean the inverter's exterior with a dry cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
• Connection Checks: Annually inspect all electrical connections (battery, PV, AC input/output) for tightness and signs of corrosion. Tighten any loose connections.
• Battery Inspection: Regularly check battery terminals for corrosion and ensure battery fluid levels (for flooded batteries) are adequate.
• Environmental Check: Ensure the installation environment remains dry, well-ventilated, and free from extreme temperatures.

7. Troubleshooting

This section provides guidance for common issues. For complex problems, contact customer support.

Common Issues and Solutions:

• Inverter Not Turning On:
  • Check battery connections and voltage.
  • Ensure battery breaker/switch is ON.
  • Verify AC input power if configured for utility priority.
• No AC Output:
  • Check for overload condition; reduce connected loads.
  • Verify AC output breaker is ON.
  • Check for fault codes on the LCD display (e.g., over-temperature, short-circuit).
  • If GFCI tripped, reset it after identifying and resolving the leakage issue.
• Battery Not Charging:
  • Check PV connections and ensure solar panels are receiving sunlight.
  • Verify AC input power if charging from utility.
  • Check charging current settings on the LCD.
  • Ensure battery type setting matches the connected battery.
• LCD Display Not Working:
  • Check main power supply to the inverter.
  • Contact customer support if the issue persists after checking power.

This image emphasizes the comprehensive safety protections built into the inverter, featuring Ground Fault Circuit Interrupter (GFCI) for leakage current protection (trips at >75mA), along with safeguards against over-temperature, overload, and output short-circuits, crucial for RV applications.

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your product or contact SRGFTS customer service directly. Ensure you have your model number (EP-4000L) and purchase details available when seeking support.

Manufacturer: SRGFTS