1. Introduction
This document serves as a comprehensive instruction manual for the Y&H 3600W 24VDC to 110VAC Hybrid Pure Sine Wave Inverter with 120A MPPT Solar Controller. This multi-function inverter/charger integrates the capabilities of an inverter, solar charger, and battery charger to provide reliable, uninterruptible power support. Its design includes a comprehensive LCD display and user-friendly buttons for configuring settings such as battery charging current, AC/solar charger priority, and acceptable input voltage, adapting to various application needs.
The inverter is designed for both on-grid and off-grid solar applications, offering a robust solution for energy management. Please read this manual thoroughly before installation and operation to ensure proper function and safety.
2. Safety Information
Always observe the following safety precautions during installation, operation, and maintenance of the inverter:
- Ensure all wiring is performed by qualified personnel in accordance with local electrical codes.
- Do not attempt to open or disassemble the inverter. There are no user-serviceable parts inside.
- Disconnect all power sources (AC, DC, and solar) before performing any maintenance or wiring.
- Install the inverter in a well-ventilated area, away from flammable materials and direct sunlight.
- Ensure proper grounding of the unit.
- Wear appropriate personal protective equipment (PPE) when working with electrical systems.
3. Product Overview
The Y&H 3600W Hybrid Solar Inverter is a versatile unit designed to manage solar power, battery charging, and AC output. Key specifications are highlighted below:
Image 3.1: Front view of the Y&H 3600W 24V Solar Inverter, highlighting its AC output power (3600W), AC output voltage (120VAC), DC input voltage (24V), 120A MPPT solar charge controller, PV input voltage range (60-450VDC), and starting voltage (90V). It also notes pure sine wave hybrid inverter with dual AC output, compatibility with lead-acid and lithium batteries, and battery-free operation support.
4. Key Features
- Hybrid On/Off-Grid Operation: Supports both grid-tied and off-grid solar power systems.
- Pure Sine Wave Output: Provides clean and stable power suitable for sensitive electronics.
- Integrated MPPT Solar Charger: Features a built-in 120A MPPT solar charge controller for efficient solar energy harvesting.
- Wide PV Input Voltage Range: Accommodates a high PV input voltage range (90-450VDC) with a maximum PV array power of 4200W.
- Dual AC Outputs: Equipped with two 110V/120V AC outputs for flexible power distribution.
- Battery Compatibility: Compatible with 24V AGM, Gel, Lead-acid, Lithium-ion, and Lithium Iron Phosphate batteries.
- Battery-Free Operation: Capable of running without a battery, directly from solar power or grid.
- Smart Battery Management: Includes built-in lithium battery automatic activation and comprehensive protection functions to optimize battery life.
- Real-time Monitoring: Features an LCD screen and LED indicators for dynamic system data and operation status monitoring.
- SmartESS App Support: Optional Wi-Fi/GPRS module for remote monitoring and control via iOS and Android applications.
- Comprehensive Protection: Offers multiple protection features including short circuit, overload, overcharge, over current, backfill, over voltage, under voltage, and over-temperature protection.
- One-Key Restoration: Allows for one-key restoration to factory settings.
- Anti-Dust Kit: Built-in anti-dust kit for enhanced durability in harsh environments.
5. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your inverter. Follow the wiring diagrams and technical specifications carefully.
5.1 Wiring and Technical Specifications
Image 5.1: Detailed wiring diagram for the Y&H 3600W Solar Inverter, showing connections for generator, mains power, solar panels, 24V battery, and dual AC outputs (Main Out and Second Out). It specifies cable gauges (12AWG for AC, 25mm² for battery) and recommended breakers (32A for AC output, 120A for charging current).
Key Wiring Details:
- PV Power: Max 4200W. Max PV Open Circuit Voltage: 500VDC. MPPT Voltage Range: 60V-500VDC. Start-up voltage (initial charging): >90V.
- Solar Panel Connection: It is recommended to connect solar panels in series to meet the voltage requirements.
- Max Charging Current: 120A. Charging Current: 100A. Suggested cable: 12AWG. Recommended breaker: 32A.
- AC Output Power: 3600W. AC Output Voltage: 110/120Vac. Peak power: 7200W. Suggested cable: 12AWG. Recommended breaker: 32A.
- Battery Connection: For 24V batteries. Suggested cable: 25mm².
- Wire Identification: Red for Live/Positive, Blue/Black for Neutral/Negative, Green for Earth.
5.2 Battery Compatibility
The inverter supports seamless multi-battery connectivity and battery-free use. It is compatible with various 24V battery types:
Image 5.2: Illustration showing the Y&H Inverter's compatibility with various battery types: AGM, GEL, FLD (Flooded), LI (Lithium), and SLD (Sealed Lead-Acid). It also notes that for Lithium Battery BMS Communication, the Battery BMS must be PylonTech.
- Lead-Acid (Seal, AGM, Gel, Flooded)
- Lithium-ion
- Lithium Iron Phosphate
The inverter also features built-in lithium battery automatic activation and comprehensive battery protection functions.
6. Operating Modes
The inverter offers flexible charging and output modes to maximize energy use and reduce electricity bills.
6.1 Charging Modes
Image 6.1: Diagram showing the four available charging modes: CSO (Solar First), Utility First, SNU (Solar and Utility - default), and OSO (Only Solar). These modes dictate the priority of power sources for charging the battery.
- CSO (Solar First): Prioritizes solar power for charging.
- Utility First: Prioritizes grid power for charging.
- SNU (Solar and Utility - Default): Uses both solar and utility power for charging.
- OSO (Only Solar): Charges exclusively from solar power.
6.2 Output Modes
The inverter supports two main output modes:
- Bypass Mode: Power is supplied directly from the utility grid.
- Inverter Mode: Power is supplied from the battery or solar panels via the inverter.
6.3 Dual Load Output Power
The inverter features dual AC output ports (Main Out and Second Out) for flexible load management.
Image 6.2: Illustration of the dual load output power. The Main Out port stops working when the battery voltage falls below a set range (20V-23V), while the Second Out port continues to operate, allowing for prioritization of critical loads.
The main output port will cease operation when the battery voltage drops below a user-defined threshold, typically between 20V and 23V. The second output port, however, will continue to function, allowing for the prioritization of essential loads during low battery conditions.
7. Monitoring and Control
The inverter provides real-time monitoring capabilities through its integrated LCD display and optional remote access via a mobile application.
7.1 SmartESS App Monitoring
Image 7.1: Screenshot of the SmartESS mobile application interface, demonstrating its capability to monitor system data. An optional Wi-Fi/GPRS data acquisition module (shown with an antenna) is required for this functionality and must be purchased separately.
For remote monitoring and control, the SmartESS app is available for both iOS and Android devices. This feature requires an optional Wi-Fi/GPRS data acquisition module, which must be purchased separately and connected to the inverter. The app allows users to view system status, energy production, consumption, and adjust certain settings from their smartphone or tablet.
8. Protection Features
The Y&H 3600W Hybrid Solar Inverter is equipped with comprehensive 360-degree protection mechanisms to ensure safe and reliable operation of your system.
Image 8.1: Visual representation of the inverter's comprehensive protection features, including Short Circuit Protection, Over-Load Protection, Over Charge Protection, Over Current Protection, Backfill Protection, Over Voltage Protection, Under Voltage Protection, and Over-Temperature Protection.
- Short Circuit Protection: Prevents damage from short circuits.
- Over-Load Protection: Safeguards against excessive power draw.
- Over Charge Protection: Protects batteries from overcharging.
- Over Current Protection: Prevents damage from excessive current.
- Backfill Protection: Ensures power flows in the correct direction.
- Over Voltage Protection: Protects against dangerously high voltage levels.
- Under Voltage Protection: Prevents damage from critically low voltage levels.
- Over-Temperature Protection: Shuts down the unit if internal temperatures become too high.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Y&H |
| Model Number | NM-ECO-LV-3.6K-BX |
| Power Source | Solar Powered and Battery Powered |
| Output Power | 3600 Watts |
| Output Voltage | 110 Volts (AC) |
| Output Waveform | Pure Sine Wave |
| Frequency | 50 Hz / 60 Hz (Configurable) |
| DC Input Voltage | 24 Volts (DC) |
| Max PV Array Power | 4200W |
| Max PV Open Circuit Voltage | 500VDC |
| MPPT Voltage Range | 60V-500VDC |
| Max Solar Charge Current | 120A |
| Max AC Input Current | 40A |
| Dimensions (L x W x H) | 50.5 cm x 42.5 cm x 8.5 cm |
| Item Weight | 9.65 Kilograms |
| Components Included | Hybrid Inverter |
| UPC | 704334410077 |
10. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your inverter. Always disconnect all power sources before performing any maintenance.
- Cleaning: Periodically clean the exterior of the inverter with a dry cloth. Ensure ventilation openings are free from dust and debris. The built-in anti-dust kit helps in harsh environments, but regular checks are still recommended.
- Connections: Annually check all electrical connections for tightness and signs of corrosion. Loose connections can cause overheating and damage.
- Battery Inspection: If using batteries, inspect them regularly for any signs of damage, leakage, or swelling. Ensure battery terminals are clean and secure.
- Environment: Ensure the installation environment remains within the specified temperature and humidity ranges.
11. Troubleshooting
This section provides basic troubleshooting steps for common issues. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No DC input from battery/solar; loose connections; blown fuse/breaker. | Check battery voltage and connections. Verify solar input. Inspect fuses/breakers. |
| No AC output | Overload; short circuit; low battery voltage; inverter fault. | Reduce load. Check for short circuits. Charge battery. Check LCD for error codes. |
| Battery not charging | No solar input; solar panels dirty/damaged; incorrect charging mode; battery fault. | Check solar panel connections and cleanliness. Verify solar input voltage. Select appropriate charging mode. |
| Over-temperature warning | Insufficient ventilation; blocked fan; excessive ambient temperature. | Ensure adequate airflow around the inverter. Clean fan and vents. Relocate if ambient temperature is too high. |
Refer to the LCD display for specific error codes, if available, and consult the full manual or contact support for detailed diagnostics.
12. Warranty and Support
The Y&H 3600W Hybrid Solar Inverter comes with a 2-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use and service conditions.
For warranty claims, technical support, or any inquiries regarding your product, please contact Y&H customer service through the retailer where the product was purchased or directly via the manufacturer's official support channels. Please have your model number (NM-ECO-LV-3.6K-BX) and proof of purchase ready when contacting support.