OOYCYOO MPPT 100A Solar Charge Controller User Manual

1. Introduction

This manual provides essential instructions for the safe and efficient operation of your OOYCYOO MPPT 100A Solar Charge Controller. This device is designed to optimize power harvesting from your solar panels and manage battery charging for 12V, 24V, 36V, and 48V battery systems. It features advanced Maximum Power Point Tracking (MPPT) technology, ensuring high conversion efficiency and compatibility with various battery types including AGM, Gel, Flooded, and Lithium batteries.

Key features include a backlight LCD display, KWH charge display, enhanced convection cooling, and multiple safety protections. The controller supports a maximum PV input voltage of 150V and a maximum input power of 5000W for 48V systems.

2. Safety Instructions

Read all instructions carefully before installation and operation.
Ensure all wiring is correctly polarized and securely connected to prevent damage to the controller, batteries, or solar panels.
Always disconnect the solar panel and battery power before installing or adjusting the controller.
Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
Do not disassemble or attempt to repair the controller. Contact qualified personnel for service.
Wear appropriate personal protective equipment, including eye protection, during installation.
Ensure the battery bank is properly fused and protected.

3. Product Overview

3.1 Components and Interface

The OOYCYOO MPPT 100A Solar Charge Controller features a clear LCD display and various terminals for connection. Below is an illustration of the main components and their functions.

OOYCYOO MPPT 100A Solar Charge Controller with labeled ports — **Image 3.1:** Front and side view of the OOYCYOO MPPT 100A Solar Charge Controller with labeled terminals and buttons. Key labels include Solar Panel Terminal, Battery Terminal, Load Terminal, 2*USB 5V 2.4A ports, RS485 Communication Port, Remote Temp Sensor port, and the 5S RESET button.

Solar Panel Terminal: Connects to the solar panel array.
Battery Terminal: Connects to the battery bank.
Load Terminal: Connects to DC loads.
USB 5V 2.4A Ports: For charging small electronic devices.
RS485 Communication Port: For external communication and monitoring.
Remote Temp Sensor Port: For connecting the included temperature sensor to monitor battery temperature.
5S RESET Button: Used for resetting the controller or accessing certain settings.
LCD Display: Shows real-time system status and parameters.

3.2 Key Features

MPPT Technology: Maximum Power Point Tracking for optimal solar energy harvesting, with a tracking rate of ≥99% and conversion rate >98%.
Auto System Voltage Recognition: Automatically identifies 12V, 24V, 36V, or 48V battery systems.
Wide Battery Compatibility: Supports AGM, Gel, Flooded, and Lithium (LiFePO4, Li(NiCoMn)O2) battery types. User-programmable settings for absorption voltage, floating voltage, and low voltage disconnect.
Comprehensive Protection: Includes PV over current/power, PV short circuit, PV reverse polarity, night reverse charging, battery reverse polarity, battery over voltage, battery over discharge, battery overheating, controller overheating, lithium battery low temperature, load short circuit, load overload, and TVS high voltage transients.
Efficient Cooling: Built-in cooling fan activates when temperature >45℃ and deactivates <40℃, extending product life.
LCD Display: Backlit display shows real-time data including KWH charge, voltage, current, and other system parameters.

OOYCYOO MPPT 100A Solar Charge Controller with icons for multiple protection features — **Image 3.2:** Visual representation of the multiple protection features integrated into the OOYCYOO MPPT 100A Solar Charge Controller, including high temperature, overcharge, reverse current, over discharge, overload, short circuit, and reverse polarity protection.

4. Setup and Installation

4.1 Mounting the Controller

Choose a dry, well-ventilated location, protected from direct sunlight, high temperatures, and moisture.
Ensure there is sufficient space around the controller for proper heat dissipation, especially above and below the unit where cooling fans are located.
Mount the controller vertically on a non-flammable surface using appropriate screws.

4.2 Wiring Connections

Important: Follow the connection order precisely to avoid damage. Connect the battery first, then the solar panels, and finally the load.

Connect the Battery: Connect the positive and negative terminals of the battery bank to the corresponding battery terminals on the controller. Ensure correct polarity. The controller will automatically detect the system voltage.
Connect the Solar Panels: Connect the positive and negative leads from your solar panel array to the corresponding PV terminals on the controller. Ensure correct polarity. The controller will begin charging the battery.
Connect the DC Load (Optional): Connect your DC loads to the load terminals on the controller. Ensure correct polarity.
Connect Temperature Sensor: Plug the included temperature sensor into the designated port on the controller and place the sensor near the battery for accurate temperature compensation.
Connect Remote Meter (Optional): If using an external remote meter, connect it to the RS485 communication port.

OOYCYOO MPPT 100A Solar Charge Controller with included accessories — **Image 4.1:** The OOYCYOO MPPT 100A Solar Charge Controller shown with its included accessories, such as mounting hardware, temperature sensor, and communication cable, ready for installation.

4.3 Battery Type Configuration

The controller is compatible with various battery types. You can configure the charging parameters for optimal performance and battery longevity.

Diagram showing OOYCYOO MPPT 100A Solar Charge Controller connected to a battery, with various battery types listed — **Image 4.2:** Diagram illustrating the OOYCYOO MPPT 100A Solar Charge Controller's strong battery adaptability, showing compatibility with GEL, AGM, USER-defined, Sealed, Flooded (FLD), Lithium (LI), and LiFePO4 battery types. A charging curve graph is also displayed, indicating Bulk Charge, Constant Charging, and Float Charge stages.

Access the settings menu on the LCD display to select your battery type (AGM, Gel, Flooded, Lithium).
For Lithium batteries or custom requirements, select 'USER' mode to manually set absorption voltage, float voltage, and low voltage disconnect thresholds. Refer to your battery manufacturer's specifications for recommended values.

5. Operating Instructions

5.1 LCD Display and Navigation

The controller's LCD display provides real-time information about your solar system. Use the 'SELECT' buttons to navigate through different screens and parameters.

OOYCYOO MPPT 100A Solar Charge Controller connected to an external remote display — **Image 5.1:** The OOYCYOO MPPT 100A Solar Charge Controller connected to an optional external remote display via a 1.5m cable, showing real-time system data such as voltage, current, and KWH.

Main Screen: Displays current battery voltage, charging current, solar panel voltage, and load status.
KWH Display: Shows the total accumulated charge in kilowatt-hours.
Parameter Settings: Access various settings such as battery type, load timer, and protection thresholds.

5.2 Load Control

The controller includes a load timer function, allowing you to control when your DC loads are active.

Navigate to the load timer settings on the LCD display.
Set the desired ON/OFF times for your connected DC loads.

6. Maintenance

Regular Inspection: Periodically check all wiring connections for tightness and corrosion.
Cleaning: Keep the controller clean and free from dust. Use a dry cloth to wipe the exterior. Ensure ventilation openings are not obstructed.
Temperature: Ensure the operating environment temperature remains within the specified range to prevent overheating. The built-in fan will assist with cooling.
Battery Health: Monitor battery voltage and health regularly. Ensure battery terminals are clean and free of corrosion.

7. Troubleshooting

This section addresses common issues you might encounter with your solar charge controller.

Problem	Possible Cause	Solution
Controller not turning on / No display	Battery not connected or low voltage; Reverse polarity connection.	Check battery connections and voltage. Ensure correct polarity. Charge battery if voltage is too low.
No charging from solar panels	Solar panels not connected; PV voltage too low/high; Reverse PV polarity; Shading on panels.	Check PV connections and polarity. Ensure PV voltage is within controller's operating range (e.g., 18V-96V for 12V system). Clear any shading.
Load not working	Load disconnected; Overload; Short circuit; Low battery voltage disconnect.	Check load connections. Reduce load. Check for short circuits. Charge battery.
Overheating	Poor ventilation; Excessive ambient temperature; Overload.	Ensure adequate airflow around the controller. Relocate to a cooler area if necessary. Reduce load.
Inaccurate voltage readings	Loose connections; Faulty sensor.	Check all wiring connections. Ensure temperature sensor is properly connected and placed.

8. Specifications

Detailed technical specifications for the OOYCYOO MPPT 100A Solar Charge Controller.

Parameter	Value
Rated Charge Current	100A
System Nominal Voltage	12V/24V/36V/48V DC Auto Identifying
Max. PV Open Circuit Voltage	150VDC
Max. PV Input Power (12V System)	1300W (Voc ≤96V)
Max. PV Input Power (24V System)	2600W (Voc ≤112V)
Max. PV Input Power (36V System)	3800W
Max. PV Input Power (48V System)	5000W (Voc ≤150V)
MPPT Best Working Voltage Range (12V)	DC18V-DC96V
MPPT Best Working Voltage Range (24V)	DC36V-DC112V
MPPT Best Working Voltage Range (48V)	DC72V-DC150V
Maximum DC/DC Transfer Efficiency	≥98.7%
Power Terminal	10 AWG
Product Dimensions	12"L x 7.8"W x 3.2"H (30.5 x 19.8 x 8.1 cm)
Item Weight	9.04 pounds (4.1 kg)
Material	Plastic
Display Type	LCD
Operating Temperature	4℃ to 40℃ (approximate, based on fan operation)
UPC	768415110171

9. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your purchase or contact OOYCYOO customer service through their official channels. Ensure you have your product model and purchase details available when seeking support.

	OOYCYOO MPPT Solar Power Generation System Controller User Manual This document provides comprehensive instructions and technical specifications for the OOYCYOO MPPT Solar Power Generation System Controller. Learn about installation, parameter settings, protection features, and system wiring for optimal solar energy utilization.
	Ooycyoo MPPT 'P' Series 40A/60A Solar Charge Controller User Manual Explore the Ooycyoo MPPT 'P' Series 40A/60A Solar Charge Controller. This user manual details advanced MPPT technology, features like real-time display, USB charging, and multi-stage battery charging, along with essential safety and installation guidance for solar energy systems.
	ECO-WORTHY 60A MPPT Solar Charge Controller Installation and Operation Manual This manual provides comprehensive instructions for the installation, operation, and maintenance of the ECO-WORTHY 60A MPPT Solar Charge Controller. It covers safety precautions, product features, installation steps, working principles, troubleshooting, and specifications for 12V, 24V, 36V, and 48V systems.
	ECGSOLAX SY Series MPPT Solar Charge Controller User Manual User manual for the ECGSOLAX SY Series 100A MPPT Solar Charge Controller, detailing specifications, operation modes, display functions, protection features, and important safety notes.
	Y&H SY Series MPPT Solar Charge Controller Wiring and Setting Guide A comprehensive guide to wiring and setting up the Y&H SY series MPPT solar charge controller, covering battery connection, solar panel connection, load connection, and voltage settings for various battery types.