1. Introduction
This manual provides essential information for the safe and efficient operation of your Temank MPPT Solar Charge Controller 35A. This advanced Maximum Power Point Tracking (MPPT) controller is designed to maximize solar panel output and enhance charging efficiency for 12V/24V battery systems. It is compatible with various battery types, including lead-acid (Sealed, Gel, Flooded) and lithium (LiFePO4, Lithium-Ion) batteries, and features comprehensive protection mechanisms.
Figure 1.1: Front view of the Temank MPPT Solar Charge Controller 35A, showing the LCD display and control buttons.
Figure 1.2: Illustration highlighting the controller's high tracking efficiency (up to 98%) and peak conversion efficiency (up to 97%), shown connected to a battery bank.
2. Safety Information
Please read all safety instructions carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure all connections are secure and correct before powering on the system.
- Always disconnect the solar panel and battery power before performing any maintenance or wiring changes.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Do not charge lithium batteries below 0°C (32°F) to prevent damage.
- The negative grounding design enhances safety. Ensure proper grounding.
- This device is equipped with protections against short circuits, overcurrent, and reverse polarity. However, proper installation is crucial to prevent these issues.
- Only qualified personnel should perform installation and maintenance.
Figure 2.1: Overview of the 9 built-in electronic protections, including PV overcurrent, PV short circuit, PV reverse polarity, battery reverse polarity, battery overvoltage, battery over-discharge, lithium battery low temperature, load overcurrent protection, and overtemperature protection.
3. Setup and Installation
3.1 Wiring Instructions
Follow the wiring order precisely to ensure safe and correct operation. Connect the system in the following sequence:
- Connect the Battery: First, connect the battery to the charge controller. Ensure the battery breaker is open before connecting, then close it once connected.
- Connect the Load (if applicable): Next, connect any DC loads to the controller.
- Connect the PV Array: Finally, connect the solar panels to the charge controller. Ensure the PV breaker is open before connecting, then close it once connected.
To disconnect the system, reverse this order: disconnect PV array, then load, then battery.
Figure 3.1: Schematic diagram illustrating the correct wiring order for the battery, load, and PV array to the solar charge controller.
3.2 Battery Compatibility and Settings
The controller is compatible with various 12V and 24V batteries. You can select the battery type and customize settings for absorption voltage, float voltage, low voltage cutoff, and load timer.
Figure 3.2: Diagram showing compatibility with multiple battery types, including AGM, GEL, FLD (Flooded), LI (Lithium), and SLA (Sealed Lead-Acid).
To select the battery type:
- Long press the BAT/▲ key to enter the setting program.
- Use the BAT/▲ and DC/▼ keys to toggle through the battery type options.
- Press the SET/⚙ key to save and confirm your selection.
- If you select "User-defined battery type" (USE), you can proceed with setting specific battery parameters.
3.3 Calibrating Battery Voltage
If there is a discrepancy between the battery voltage monitored by the controller and the value measured by a multimeter, you can calibrate the battery voltage using this setting.
Figure 3.3: Screen showing the battery voltage calibration interface on the LCD display.
- Long press the BAT/▲ key to enter the setting program.
- Use the BAT/▲ and DC/▼ keys to adjust the value.
- Press the SET/⚙ key to save and confirm.
4. Operating Instructions
4.1 LCD Display and Working Modes
The clear LCD screen provides real-time information about the controller's working state and process. It displays various parameters and indicators.
Figure 4.1: Detailed view of the backlight LCD screen, showing various icons and numerical readings for system status. It also lists working modes and error codes.
The controller operates in several working modes:
- 3.0: Night mode, no charging.
- 4.0: MPPT Charging Mode.
- 7.0: Boost Charging Mode.
- 8.0: Floating Charge Mode.
4.2 Multiple Load Work Modes
The controller supports different load operation modes, allowing you to control when your connected DC loads are powered.
Figure 4.2: Illustration of the three primary load work modes: 00H (Load Turn OFF), 24H (Load always Turn ON), and 01H~23H (Time control for load duration).
- 00H: Load is always turned OFF.
- 24H: Load is always turned ON.
- 01H~23H: Time control mode, allowing you to set the duration (in hours) for which the load remains ON.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your solar charge controller.
- Periodically inspect all wiring connections for tightness and corrosion.
- Keep the controller clean and free from dust and debris. Use a dry cloth for cleaning.
- Ensure adequate ventilation around the controller to prevent overheating.
- Monitor the LCD display for any unusual readings or fault codes.
6. Troubleshooting
The controller's LCD display may show fault codes if an issue occurs. Refer to the table below for common fault codes and their solutions.
| Fault Code | Fault Cause | Solution |
|---|---|---|
| 18 | Input photovoltaic voltage too low | Increase the number of solar panels or connect them in series to raise the photovoltaic input voltage. |
| 60 | Overtemperature protection | Allow the equipment to cool to below the recovery temperature to resume normal charging and discharging. |
| 63 | Battery voltage too high | Measure to confirm if battery voltage exceeds rated voltage and disconnect photovoltaic array circuit breaker. |
| 65 | Battery voltage too low | Charge the battery until voltage exceeds the undervoltage recovery point. Refer to '3.7 Default Parameters for Different Battery Types' for specific details. |
| 71 | Input photovoltaic voltage too high | Reduce the number of photovoltaic arrays connected to the controller to lower photovoltaic input; or adjust series and parallel connections to reduce voltage or current values. |
| 73 | Overcharging current | Reduce output terminal load to ensure total load is within rated limits of the controller and battery. |
| 72 | Overdischarging current | Reduce output terminal load to ensure total load is within rated limits of the controller and battery. |
7. Specifications
| Feature | Detail |
|---|---|
| Model | 35A |
| Max PV Input (12V Battery) | 360W |
| Max PV Input (24V Battery) | 720W |
| Max. PV Open-Circuit Voltage | <80V |
| Battery Voltage | 12V/24V Auto |
| Tracking Efficiency | Up to 98% |
| Peak Conversion Efficiency | Up to 97% |
| Compatible Battery Types | Lead-acid (Sealed, Gel, Flooded), Lithium (LiFePO4, Lithium-Ion) |
| Display Type | LCD |
| Dimensions | 7.68 x 5.31 x 2.56 inches (approx. for 35A model) |
| Item Weight | 1.98 pounds |
| Color | Orange |
8. Warranty and Support
Temank is committed to providing high-quality products and responsive customer service. For any questions, technical assistance, or warranty claims, please contact Temank customer support through the retailer where the product was purchased or refer to the contact information provided with your product packaging.
Please retain your proof of purchase for warranty purposes.
