Introduction
This user manual provides detailed instructions for the Caredy PWM 6V/12V 3A Solar Panel Intelligent Regulator. This device is designed to manage power flow from your solar panel to your battery, preventing overcharge, over-discharge, short circuits, and overloading. It utilizes the battery discharge rate characteristics for accurate discharge control and adopts a PWM main charging circuit of tandem type to effectively improve charging efficiency. An LED indicator displays the battery's current status. Three operating modes can be selected: normally open mode, pure light control mode, and light control plus timing mode.
Safety Information
- Ensure all connections are correct and secure before operation to prevent damage to the controller or connected devices.
- Connect the battery to the controller first, then the solar panel, and finally the load. Disconnect in the reverse order.
- Do not expose the controller to water or excessive moisture.
- Operate within the specified voltage and current limits (6V/12V, 3A).
- Keep out of reach of children.
Product Overview
The Caredy Solar Charge Controller is a compact and efficient device for managing your solar power system. It features clear indicators and terminals for easy connection.
Figure 1: Front view of the Caredy Solar Charge Controller, showing "CHARGE" and "LOAD" indicators, and terminals for solar panel, battery, and load.
Figure 2: Front and back view of the controller. The back label displays Model: CTK3S, U:6V12V I: 3A, and a barcode with the number 6922018040201.
Figure 3: Physical dimensions of the controller, approximately 6.9 cm (2.7 in) in height and 5.4 cm (2.1 in) in width.
Figure 4: Internal view of the controller, showing the circuit board and components.
Setup and Installation
Follow these steps for proper installation of your solar charge controller:
- Prepare Wiring: Ensure all wires are of appropriate gauge for the current and length, and that all connections are clean and secure.
- Connect Battery: First, connect the battery to the charge controller's battery terminals (marked with a battery icon). Ensure correct polarity (+ to + and - to -). The controller will detect the battery voltage (6V or 12V) automatically.
- Connect Solar Panel: Next, connect the solar panel to the charge controller's solar panel terminals (marked with a solar panel icon). Ensure correct polarity.
- Connect Load: Finally, connect your DC load (e.g., LED light) to the charge controller's load terminals (marked with a light bulb icon). Ensure correct polarity.
Figure 5: Connection diagram showing the solar controller connected to solar panel arrays, a battery, and an LED light.
Operating Modes
The controller offers three distinct operating modes for the load output:
- Normally Open Mode: The load output is continuously on, regardless of light conditions.
- Pure Light Control Mode: The load output turns on automatically when it gets dark and turns off when it gets light.
- Light Control Plus Timing Mode: The load output turns on when it gets dark and stays on for a preset duration, then turns off.
Refer to the specific product documentation or contact support for instructions on how to select and configure these operating modes, as this model features an adjustable LCD display for settings.
Figure 6: The controller supports three operating modes: normally open mode, pure light control mode, and light control plus timing mode.
Maintenance
- Regularly 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.
- Periodically inspect the battery for signs of damage or leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No charge indicator light | No solar input; reversed solar polarity; faulty solar panel. | Check solar panel connections and sunlight exposure. Verify polarity. Test solar panel output. |
| Load not working | Low battery voltage; reversed load polarity; load exceeding current limit; incorrect operating mode. | Check battery voltage. Verify load polarity. Reduce load. Adjust operating mode settings. |
| Controller not turning on | Battery not connected or reversed polarity. | Ensure battery is connected first with correct polarity. |
| Overcharge/Over-discharge protection active | Battery voltage outside safe operating range. | The controller automatically protects the battery. Ensure proper charging/discharging conditions. |
| Short circuit protection active | Short circuit in solar panel, battery, or load circuit. | Identify and remove the short circuit. The controller will resume normal operation once the fault is cleared. |
Specifications
| Brand | Caredy |
| Model | Caredyigk4v5ur7c (CTK3S) |
| Voltage | 6V/12V (Auto-sensing) |
| Current | 3A |
| Working Temperature | -20 ℃ to 55 ℃ (-4 ℉ to 131 ℉) |
| Protection Level | IP30 |
| Product Size | Approx. 6.9 x 5.4 cm (2.7 x 2.1 inches) |
| Product Weight | Approx. 43g (0.81 ounces) |
| Charging Circuit | PWM Tandem Type |
| Display Type | LED Indicator |
| UPC | 749249028092 |
Official Product Video
Video: Solar Charge Controller, PWM 6V/12V 3A Solar Panel. This video provides a visual overview of the product and its features.
Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact Caredy customer service directly. Details regarding specific warranty periods and support channels are typically provided with your purchase.
You can also visit the official Caredy store on Amazon for more information: Caredy Store