Y&H MPPT 100A 12V/24V Solar Charge Controller Regulator

1. Introduction

The Y&H MPPT 100A Solar Charge Controller Regulator is designed to efficiently manage power flow from your solar panels to your battery bank and connected loads. Featuring Maximum Power Point Tracking (MPPT) technology, it optimizes solar energy harvesting, providing a reliable and stable power supply for various applications. This manual provides essential information for safe installation, operation, and maintenance of your solar charge controller.

Image 1: Front view of the Y&H MPPT 100A Solar Charge Controller, showing the LCD display, control buttons, and dual USB ports.

2. Safety Instructions

• Ensure your battery has sufficient voltage for the controller to correctly identify the battery type before initial installation.
• Keep the battery cable as short as possible to minimize power loss.
• This regulator is suitable only for lead-acid batteries (OPEN, AGM, GEL). It is not compatible with Ni-MH, Li-ion, or other battery types.
• The charge regulator is designed exclusively for regulating solar modules. Never connect any other charging source to the charge regulator.

3. Product Features

• MPPT Technology: Detects the maximum charging current to increase efficiency by 10%-30% compared to standard PWM controllers.
• Battery Compatibility: Suitable for lead-acid batteries (OPEN, AGM, GEL).
• Automatic Load Cut-off: When battery voltage is low, the controller automatically disconnects the load. It will reconnect when the battery voltage returns to normal.
• Comprehensive Protection: Features over-charging, over-discharging, reverse polarity protection for battery and solar panels, short-circuit protection, and thunder protection.
• Dual USB Ports: Provides two 5V/2A USB outputs for charging external devices.
• LCD Display: Clear LCD screen shows charging current, discharging current, battery voltage, temperature, and other operational parameters.
• Automatic Voltage Recognition: Automatically sets charge-off, load-off, and load-restore voltages based on battery voltage grade (parameters are fixed at 25°C).
• Temperature Compensation: Automatically adjusts charging voltage based on ambient temperature changes.

4. Product Overview

Familiarize yourself with the components and interface of your Y&H MPPT Solar Charge Controller.

Image 2: Labeled diagram of the Y&H MPPT Solar Charge Controller, indicating the LCD display, Menu button, Page Up button, Page Down/Manual button, dual USB ports, and connection terminals for solar panel, battery, and load.

• LCD Display: Shows system status and parameters.
• Menu Button: Used to navigate menus and confirm selections.
• Page Up Button: Used to scroll up or increase values.
• Page Down/Manual Button: Used to scroll down, decrease values, or manually control load.
• Dual USB Ports: 5V DC output for charging USB devices.
• Solar Panel Terminals: Connect to your solar photovoltaic modules.
• Battery Terminals: Connect to your battery bank.
• Load Terminals: Connect to your DC loads.

5. Installation and System Connection

Proper connection sequence is crucial to prevent damage to the controller and other components. Always follow the steps below.

Connection Sequence:

1. Connect the battery to the charge controller's positive (+) and negative (-) terminals.
2. Connect the photovoltaic module (solar panel) to the charge controller's positive (+) and negative (-) terminals.
3. Connect the DC load to the charge controller's positive (+) and negative (-) terminals.

Important: The reverse order applies when uninstalling! Always disconnect the solar panel first, then the battery, and finally the load. An improper connection or disconnection sequence can damage the controller.

Image 3: Wiring diagram illustrating the connection of a solar panel, battery, and load to the Y&H MPPT Solar Charge Controller. The diagram shows positive and negative terminals for each connection.

Important Considerations:

• Inverter Connection: Connect the inverter directly to the battery, not to the load terminals of the controller.
• Battery Capacity: Ensure the battery capacity corresponds to the solar panel current. For example, a 10A solar panel current ideally requires a 100 AH battery capacity. Using a large solar panel with a small battery can be hazardous.
• Solar Panel Voltage: For a 12V battery, the solar panel's working voltage (Voc) should be between 17V and 23V. For a 24V battery, the working voltage (Voc) should be between 36V and 46V. Exceeding these voltage ranges can damage the controller.

6. Operating Instructions

LCD Display and Navigation:

The LCD display shows various parameters such as battery voltage, solar panel charging status, load status, and battery charge level. Use the buttons to navigate and adjust settings.

• MENU Button: Short press to cycle through different display interfaces.
• UP Button: Used to increase values in settings.
• DOWN/MANUAL Button: Used to decrease values in settings or to manually turn the load on/off.

Parameter Settings:

1. Short press the MENU button to cycle through the display interfaces.
2. To enter manual settings, long press the MENU button for 3 seconds. The display will enter a flickering state.
3. While flickering, short press the MENU button to switch between parameters. Use the UP and DOWN buttons to adjust the desired value.
4. After completing adjustments, the controller will automatically save the settings and exit the setup menu.

Function Descriptions:

• Over-discharge Recovery Voltage: The voltage at which the load output is re-enabled after the battery has recovered from an over-discharge state.
• Over-discharge Voltage: The voltage threshold at which the load output is disconnected to protect the battery from over-discharge.
• Working Type Settings:
  • [24H]: Load output is active for 24 hours (unless battery voltage is below the over-discharge threshold).
  • [1-19H]: Load turns on after sunset and remains on for the set number of hours (1 to 19 hours).
  • [0H]: Load turns on from dusk until dawn.

7. Maintenance

To ensure optimal performance and longevity of your Y&H MPPT Solar Charge Controller, regular maintenance is recommended:

• Periodically check all wiring connections for tightness and corrosion.
• Keep the controller clean and free from dust and debris.
• Ensure adequate ventilation around the controller to prevent overheating.
• Monitor the LCD display for any error codes or unusual readings.

8. Troubleshooting

Refer to the table below for common issues and their solutions.

9. Specifications

Note: Product specifications are subject to change without prior notice.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the product packaging or contact your retailer. Keep your purchase receipt as proof of purchase.