Y&H MPPT Solar Charge Controller User Manual

1. Introduction

The Y&H HMW MPPT Solar Charge Controller is designed to efficiently manage power flow in off-grid photovoltaic systems. It detects the real-time power generation of solar panels and tracks the maximum power point (MPPT) to ensure optimal charging of various battery types. This controller coordinates the operation of solar panels, batteries, and loads, serving as a core component for system stability and performance.

Equipped with an LCD display, users can easily monitor operating status, parameters, and modify control settings to meet specific system requirements. The controller also features comprehensive electronic fault self-test and robust electronic protection functions to minimize damage from installation errors or system failures.

2. Safety Information

Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in serious injury or damage to the controller and other system components.

• Ensure all wiring is correctly polarized and securely connected.
• Always connect the battery to the controller FIRST, then the solar panels, and finally the load.
• Disconnect the solar panels and load BEFORE disconnecting the battery.
• Do not attempt to repair the controller yourself. Contact qualified personnel for service.
• Install the controller in a well-ventilated area to ensure proper heat dissipation.
• Keep the controller away from flammable materials and moisture.

3. Product Overview

The Y&H HMW MPPT Solar Charge Controller features a robust design with an intuitive LCD display and control buttons for easy interaction.

3.1. Key Components and Indicators

1. Solar charging controller function indicator light
2. Solar charging controller LCD display screen
3. Solar charging controller interface setting button
4. Installation hole for solar charging controller

3.2. LCD Display Interface

The LCD display provides real-time information about your solar system:

• PV: Solar panel input voltage
• CHARGE: Battery charging current
• LOAD: DC load output current
• ALARM: Warning indicator light
• WiFi status indicator: Indicates WiFi connection status (if applicable)
• Real-time clock: Current date and time
• Battery charging power: Power being delivered to the battery
• DC load output power: Power consumed by the DC load
• Daily: Daily energy generated (WH)
• Total: Total energy generated (KWH)
• Device Temp: Controller's internal temperature
• Bat Temp: Battery temperature
• Bat Type: Configured battery type
• Load Mode: Configured load control mode
• System Vol: System voltage (Auto/Manual)
• Load Switch: Load output status (Turnoff/Turnon)
• Status: System operational status (e.g., System normal, Charging ready)

3.3. Control Buttons

• ESC: Return/Load switch key
• UP: Page up/+
• DOWN: Page down/-
• SET: Confirm/Set key

4. Specifications

The Y&H HMW series MPPT Solar Charge Controller offers various models with different current ratings. Below are the detailed technical specifications:

5. Setup & Installation

5.1. Wiring Order

It is critical to follow the correct wiring sequence to prevent damage to the controller and other components. Always connect in the following order:

1. Connect the Battery: Connect the battery to the controller first. Ensure correct polarity (+ to + and - to -).
2. Connect Solar Panels (PV System): Connect the solar panels to the controller. Ensure correct polarity.
3. Connect the Load: Connect your DC load to the controller.

To disconnect the system, reverse the order: Disconnect the load, then the solar panels, then the battery.

5.2. Mounting

• Mount the controller vertically on a flat, non-flammable surface.
• Ensure adequate clearance around the controller for proper air circulation and heat dissipation. The controller uses intelligent fan cooling.
• Avoid direct sunlight, high temperatures, and humid environments.

5.3. Optional Communication Function (WiFi/Bluetooth)

This specific model does not support communication functions (RS485/WiFi/Bluetooth). If you require these features, please ensure you purchase a communication-enabled version of the controller.

For models with optional WiFi/Bluetooth, follow these general steps:

5.3.1. WiFi Mode Connection Steps

1. If the Bluetooth connection fails, you can use this method to connect. Click to scan the QR-code for operation.
2. Scan the two-dimensional code label on the device (each device has an independent body code) to activate the distribution mechanism.
3. Select the WiFi signal connected to the current mobile phone and enter the WiFi password; Click Next.
4. The system enters the network configuration state and waits for the completion of the network configuration.

Note: Please ensure that the signal sent by your wireless router can cover the installation location of the device well, and ensure that the communication with the router is good. Otherwise, all monitoring APP functions may fail due to poor communication signals.

5.3.2. Bluetooth Mode APP Installation Steps

1. Scan the code to download the "Smart Life APP", open the Smart Life APP and turn on the Bluetooth function of your mobile phone.
2. Power on the solar grid micro inverter device.
3. Click the "+" icon in the upper right corner of the Smart Life APP homepage to add a device; Click "Add" after discovering the device.
4. Confirm the WiFi connection, enter the password, and click "Next" to ensure that the device is within the WiFi signal.
5. Click Finish to enter the home page of the device.

Note: Please ensure that the signal sent by your wireless router can cover the installation location of the device well, and ensure that the communication with the router is good. Otherwise, all monitoring APP functions may fail due to poor communication signals.

6. Operating Instructions

Once the controller is correctly installed and powered on, the LCD display will show the current system status. Use the control buttons to navigate menus and adjust settings.

6.1. Navigating the Display

Press the UP and DOWN buttons to scroll through different display screens, showing various parameters like solar panel voltage, battery voltage, charging current, load current, and system status.

6.2. Parameter Settings

To enter the settings menu:

1. Press the SET button to enter the parameter setting mode.
2. Use the UP and DOWN buttons to navigate between parameters (e.g., Battery Type, Load Mode, System Voltage).
3. Press SET again to select a parameter for editing.
4. Use UP and DOWN to change the value.
5. Press SET to confirm the new value.
6. Press ESC to exit the setting mode or return to the previous menu.

Key adjustable parameters include:

• Battery Type: Select the type of battery connected (Sealed, Gel, Watering, Lithium Iron Phosphate, Ternary, Phosphoric Acid). This is crucial for correct charging algorithms.
• System Voltage: Can be set to Auto-recognition or a fixed voltage.
• Load Mode: Configure how the DC load output operates (e.g., always on, dusk to dawn, timer-based).
• Charging Current: Adjust the maximum charging current if needed (0-60A, 0-100A, or 0-120A depending on model).

6.3. Features

• MPPT Tracking Efficiency: Up to 99.9% for maximum power harvest from solar panels.
• Energy Conversion Efficiency: Up to 98% due to advanced digital power supply technology.
• Battery Compatibility: Supports various battery types including colloidal, sealed, open-end, and lithium batteries.
• Current Limiting Charging: Automatically reduces charging power if the solar panel power is too high and the charging current exceeds the rated current, operating at the rated charging current.
• Over-Temperature Protection: Built-in mechanism that linearly decreases charging current when temperature exceeds a set value, preventing damage.
• Temperature Compensation: Automatically adjusts charging and discharging parameters based on temperature to extend battery life.
• Metal Shell: Provides enhanced heat dissipation.
• Lithium Battery 0V Charging: Supports charging of deeply discharged lithium batteries.
• High Input Voltage Resistance: Reduces the need for heavy gauge solar wiring, lowering system costs.
• Display Interface: Can be switched between Chinese and English.

7. Maintenance

Regular maintenance ensures optimal performance and longevity of your solar charge controller.

• Cleaning: Periodically clean the controller's exterior, especially the cooling fins and fan vents, to prevent dust buildup that can hinder heat dissipation. Use a dry cloth.
• Connections: Check all wiring connections regularly to ensure they are tight and free from corrosion. Loose connections can cause overheating and poor performance.
• Battery Inspection: Inspect battery terminals for corrosion and ensure they are clean and tight.
• Environment: Ensure the installation environment remains within the specified operating temperature range and is free from excessive moisture or dust.
• Firmware: If a communication version is used, check for any available firmware updates from the manufacturer's website or app.

8. Troubleshooting

This section provides solutions to common issues you might encounter with your solar charge controller.

• No Display/Power:
  - Check battery connections and ensure the battery has sufficient voltage.
  - Verify all wiring is correct and secure.
• No Charging from Solar Panels:
  - Check solar panel connections and polarity.
  - Ensure solar panel voltage is above the battery voltage + 2V (start charging condition).
  - Verify solar panels are receiving adequate sunlight.
  - Check for any shading on the solar panels.
• Load Not Working:
  - Check load connections and ensure correct polarity.
  - Verify the load switch setting on the controller is set to 'Turnon' or the appropriate load mode.
  - Check if the battery voltage is too low, triggering low voltage disconnect.
• Over-Temperature Warning:
  - Ensure the controller is installed in a well-ventilated area.
  - Clean any dust or debris from the cooling fins and fan vents.
  - Reduce the load or solar input if possible, especially in hot environments.
• Inaccurate Readings:
  - Ensure all connections are tight and free of corrosion.
  - Check battery type settings to ensure it matches your battery.

If the problem persists after following these steps, please contact customer support.

9. User Tips

• Battery First: Always connect the battery to the controller before connecting solar panels or loads. This ensures the controller can properly detect the system voltage.
• Match Battery Type: Correctly setting the battery type in the controller's menu is crucial for optimal charging and battery longevity. Incorrect settings can damage your battery.
• Ventilation is Key: Ensure your controller has ample airflow, especially for higher amperage models. Good ventilation prevents overheating and prolongs the life of the device.
• Monitor Performance: Regularly check the LCD display for system status and parameters. This helps in early detection of any issues.
• Consider Communication Module: If remote monitoring is important for your setup, consider purchasing a model with the optional RS485/WiFi/Bluetooth communication interface.

10. Warranty & Support

Y&H products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the official Y&H customer service channel.