1. හැඳින්වීම
The HQST 20A PWM Flush Mount Solar Charge Controller is designed to efficiently manage power flow from your solar panels to your battery bank, ensuring optimal charging and protection. It is compatible with both 12V and 24V battery systems, supporting various battery types including Lithium, Sealed (AGM), Gel, and Flooded batteries. This manual provides essential information for proper installation, operation, and maintenance of your solar charge controller.
2. නිෂ්පාදන අවසන්view
Familiarize yourself with the components of your HQST solar charge controller:

This diagram illustrates the key components and dimensions of the HQST 20A PWM Flush Mount Solar Charge Controller. It measures approximately 5.11 inches in length and 3.54 inches in width.
- 5V 1A USB Port: For charging USB-compatible devices.
- ඉහළ සහ පහළ බොත්තම: Used for navigating display screens and adjusting settings.
- LCD සංදර්ශක තිරය: Shows real-time system data and settings.
- Load Button: Controls the DC load output.
- සවි කිරීම් සිදුරු: For securing the controller during installation.
- පැටවුම් පර්යන්ත: Connect to your DC loads.
- බැටරි පර්යන්ත: Connect to your battery bank.
- Solar Terminals: Connect to your solar panel array.
- Flat Mount Bracket: Optional bracket for surface mounting.
3. පිහිටුවීම
3.1 පාලකය සවි කිරීම
The controller offers flexible mounting options:

The controller can be installed using either a flush mount for a seamless look or a flat mount with the provided bracket. Choose a location that is dry, well-ventilated, and away from direct sunlight or heat sources.
- ෆ්ලෂ් මවුන්ට්: Integrate the controller directly into a panel or wall for a clean finish.
- පැතලි සවි කිරීම: Use the included bracket to mount the controller on a surface.
Ensure adequate space around the controller for air circulation to prevent overheating.
3.2 රැහැන් සම්බන්ධතා
Follow the correct wiring sequence to prevent damage to the controller or battery:
- බැටරිය සම්බන්ධ කරන්න: First, connect the battery to the controller's battery terminals (7). Ensure correct polarity (positive to positive, negative to negative). The LCD will power on.
- සූර්ය පැනලය සම්බන්ධ කරන්න: Next, connect the solar panel to the controller's solar terminals (8). Ensure correct polarity.
- DC භාරය සම්බන්ධ කරන්න: Finally, connect your DC loads to the controller's load terminals (6). Ensure correct polarity.
විසන්ධි කිරීමේ අනුපිළිවෙල: To disconnect the system, reverse the order: disconnect the load, then the solar panel, and finally the battery.

This wiring diagram illustrates the proper connection order for the solar panel, battery, and DC load to the HQST solar charge controller.

When connecting wires, ensure they are inserted into the correct square socket for the cable, not the screw hole. Fully unscrew the terminal screws, insert the wire ends, then tighten the screws securely.
3.3 බැටරි වර්ගය සැකසීම
The controller automatically recognizes 12V/24V Sealed (AGM), Gel, and Flooded batteries. For Lithium batteries, manual parameter setting is required:

The LCD display allows for manual adjustment of battery parameters, especially crucial for Lithium-ion batteries.
- Press and hold the 'Up & Down' button to enter the setting mode.
- Use the 'Up & Down' buttons to navigate to the battery type setting (e.g., "b01" for Gel, "b02" for Sealed, "b03" for Flooded, "b04" for Lithium).
- For Lithium batteries, further adjust charging voltage, over-discharge voltage, and other parameters as per your battery manufacturer's specifications.
- Press and hold the 'Load' button to save the settings and exit.
4. මෙහෙයුම් උපදෙස්
4.1 LCD Display Navigation
The LCD screen provides real-time monitoring of your solar system:

The intuitive LCD screen cycles through various operational data, including battery voltage, PV වෙළුමtage, charge current, load current, controller temperature, and battery state of charge (SOC).
- Press the 'Up & Down' button (2) to manually cycle through the displayed parameters.
- The display will automatically cycle through parameters if no button is pressed for a few seconds.
4.2 පැටවුම් පාලනය
The controller features a DC load output with multiple control modes:
- Press the 'Load' button (4) to manually turn the DC load output on or off.
- The controller supports 17 different load control modes, allowing for customized operation (e.g., dusk-to-dawn, timed operation). Refer to the full manual for detailed instructions on setting load modes.
4.3 USB ආරෝපණ වරාය
The integrated 5V 1A USB port (1) can charge small electronic devices. This port is active when the DC load output is enabled.
4.4 4-එස්tagඊ ස්මාර්ට් ආරෝපණය
The controller employs an advanced 4-stage charging algorithm to optimize battery health and lifespan:

This graph illustrates the voltagඊ සහ වත්මන් profiles during the 4-stage charging process, including Bulk, Boost/Absorption, Float, and Equalization stages.
- තොග ගාස්තුව: බැටරිය වේගයෙන් ආරෝපණය කිරීම සඳහා උපරිම ධාරාවක් ලබා දෙයි.
- Boost/Absorption Charge: නියත වෝල්ටීයතාවයක් පවත්වා ගනීtage බැටරිය වැඩිපුර ආරෝපණය නොකර සම්පූර්ණයෙන්ම ආරෝපණය කර ඇති බව සහතික කිරීමට.
- පාවෙන ගාස්තු: පරිමාව අඩු කරයිtage to a lower level to maintain the battery at full charge, compensating for self-discharge.
- සමීකරණ ගාස්තුව: (For lead-acid batteries only) Periodically overcharges the battery to balance cell voltagසහ සල්ෆේෂන් වැළැක්වීම.
5. නඩත්තු කිරීම
To ensure the longevity and optimal performance of your HQST solar charge controller, perform the following maintenance checks:
- නිතිපතා පරීක්ෂා කිරීම: Periodically check all wiring connections for tightness and signs of corrosion. Loose connections can cause voltagඊ බිංදු සහ අධික උනුසුම් වීම.
- පිරිසිදුකම: Keep the controller's exterior clean and free from dust, dirt, and debris. Use a dry cloth for cleaning. Do not use harsh chemicals or abrasive materials.
- වාතාශ්රය: Ensure that the installation area remains well-ventilated to allow for proper heat dissipation. Blocked vents can lead to overheating and reduced efficiency.
- බැටරි සෞඛ්යය: Monitor your battery's health and performance regularly. Follow the battery manufacturer's maintenance guidelines.
6. දෝශ නිරාකරණය
If you encounter issues with your solar charge controller, refer to the following common problems and solutions:
| ගැටලුව | විය හැකි හේතුව | විසඳුම |
|---|---|---|
| Controller Display is Off | බැටරියෙන් විදුලිය නොමැති වීම හෝ වැරදි බැටරි සම්බන්ධතාවයක්. | බැටරි සම්බන්ධතා පරීක්ෂා කර නිවැරදි ධ්රැවීයතාව සහතික කරන්න. බැටරි පරිමාව සත්යාපනය කරන්න.tage is above the minimum operating voltage. |
| බැටරිය ආරෝපණය නොවේ | No solar input, incorrect solar panel connection, or faulty solar panel. | Ensure solar panels are receiving adequate sunlight. Check solar panel wiring for correct polarity and secure connections. Test solar panel voltage. |
| DC Load Not Working | Load output disabled, incorrect load connection, or over-discharge protection active. | Press the Load button to enable output. Check load wiring for correct polarity and secure connections. Verify battery voltage is above the over-discharge protection threshold. |
| Error Code Displayed (e.g., E02) | Specific system fault (e.g., E02 typically indicates over-discharge). | Consult the full product manual for a complete list of error codes and their corresponding solutions. Address the underlying issue (e.g., charge battery for E02). |
If the problem persists after attempting these solutions, please contact HQST customer support.
7. පිරිවිතර
| විශේෂාංගය | පිරිවිතර |
|---|---|
| ආකෘතිය | 20A PWM Flush Mount |
| පද්ධති වෙළුමtage | 12V / 24V Auto-recognition (Lithium batteries require manual setting) |
| උපරිම ආරෝපණ ධාරාව | 20A |
| බැටරි අනුකූලතාව | Lithium, Sealed (AGM), Gel, Flooded |
| අයකිරීම එස්tages | 4-එස්tage (Bulk, Boost/Absorption, Float, Equalization) |
| USB ප්රතිදානය | 5V 1A |
| සංදර්ශක වර්ගය | LCD |
| නිෂ්පාදන මානයන් (L x W x H) | අඟල් 5.11 x 3.54 x 1.36 |
| අයිතමයේ බර | අවුන්ස 9.1 කි |
| උපරිම මෙහෙයුම් උෂ්ණත්වය | 45°C (113°F) |
| ආරක්ෂණ විශේෂාංග | Reverse polarity, over-voltage, over-current, over-discharge, short-circuit, reverse current. |
8. වගකීම් සහ සහාය
This HQST product is backed by a වසර 10ක වගකීමක්, reflecting our commitment to quality and durability. For any technical assistance, troubleshooting, or warranty claims, please contact HQST customer support.
You can find contact information and additional resources on the official HQST webඅඩවිය: www.hqst.com
Please have your product model number (20A PWM Flush Mount) and purchase details ready when contacting support.