1. Танилцуулга
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. Бүтээгдэхүүн дууссанview
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.
- Дээш, доош товчлуур: Used for navigating display screens and adjusting settings.
- LCD дэлгэцийн дэлгэц: Shows real-time system data and settings.
- Load Button: Controls the DC load output.
- Холбох нүх: For securing the controller during installation.
- Load Terminals: Connect to your DC loads.
- Зайны терминалууд: Connect to your battery bank.
- Solar Terminals: Нарны хавтангийнхаа массивыг холбоно уу.
- Flat Mount Bracket: Optional bracket for surface mounting.
3. Тохиргоо
3.1 Хянагчийг суурилуулах
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.
- Угаах угсралт: Integrate the controller directly into a panel or wall for a clean finish.
- Хавтгай бэхэлгээ: 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 утас холболт
Follow the correct wiring sequence to prevent damage to the controller or battery:
- Батерейг холбоно уу: 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.
- Нарны хавтанг холбох: Next, connect the solar panel to the controller's solar terminals (8). Ensure correct polarity.
- DC ачааллыг холбоно уу: Finally, connect your DC loads to the controller's load terminals (6). Ensure correct polarity.
Disconnection Sequence: 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 Зайны төрлийн тохиргоо
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, хэт цэнэггүйдэл ботьtage, and other parameters as per your battery manufacturer's specifications.
- Press and hold the 'Load' button to save the settings and exit.
4. Ашиглалтын заавар
4.1 LCD дэлгэцийн навигаци
The LCD screen provides real-time monitoring of your solar system:

The intuitive LCD screen cycles through various operational data, including battery voltage, PV ботьtage, 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 Ачааллын хяналт
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 цэнэглэх порт
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-Stage Ухаалаг цэнэглэх
The controller employs an advanced 4-stagБатерейны эрүүл мэнд болон ашиглалтын хугацааг оновчтой болгох цахим цэнэглэх алгоритм:

This graph illustrates the voltage ба одоогийн мэргэжлийнfiles during the 4-stage charging process, including Bulk, Boost/Absorption, Float, and Equalization stages.
- Бөөнөөр төлөх төлбөр: Батерейг хурдан цэнэглэхийн тулд хамгийн их гүйдэл өгдөг.
- Boost/Absorption Charge: Тогтмол эзлэхүүнийг хадгалдагtage to ensure the battery is fully charged without overcharging.
- Хөвөгч төлбөр: Эзлэхүүнийг бууруулдагtage to a lower level to maintain the battery at full charge, compensating for self-discharge.
- Тэнцвэржүүлэх хураамж: (For lead-acid batteries only) Periodically overcharges the battery to balance cell voltagэсүүд болон сульфатжилтаас сэргийлнэ.
5. Засвар үйлчилгээ
To ensure the longevity and optimal performance of your HQST solar charge controller, perform the following maintenance checks:
- Тогтмол үзлэг: Periodically check all wiring connections for tightness and signs of corrosion. Loose connections can cause voltage уналт болон хэт халалт.
- Цэвэр байдал: 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.
- Агааржуулалт: Ensure that the installation area remains well-ventilated to allow for proper heat dissipation. Blocked vents can lead to overheating and reduced efficiency.
- Батерейны эрүүл мэнд: Monitor your battery's health and performance regularly. Follow the battery manufacturer's maintenance guidelines.
6. Алдаа засах
Хэрэв та нарны цэнэгийн зохицуулагчтай холбоотой асуудалтай тулгарвал дараах нийтлэг асуудал, шийдлүүдийг үзнэ үү.
| Асуудал | Боломжит шалтгаан | Шийдэл |
|---|---|---|
| Controller Display is Off | Батерейгаас цэнэг алга эсвэл батерей буруу холбогдсон байна. | Check battery connections and ensure correct polarity. Verify battery voltage нь хамгийн бага үйлдлийн хэмжээнээс дээгүүр байнаtage. |
| Батерейг цэнэглэхгүй байна | 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. Техникийн үзүүлэлтүүд
| Онцлог | Тодорхойлолт |
|---|---|
| Загвар | 20A PWM Flush Mount |
| Системийн ботьtage | 12V / 24V Auto-recognition (Lithium batteries require manual setting) |
| Хамгийн их цэнэглэх гүйдэл | 20 А |
| Батерейны нийцтэй байдал | Lithium, Sealed (AGM), Gel, Flooded |
| Цэнэглэж байгаа Сtages | 4-Сtage (Bulk, Boost/Absorption, Float, Equalization) |
| USB гаралт | 5V 1А |
| Дэлгэцийн төрөл | LCD |
| Бүтээгдэхүүний хэмжээ (L x W x H) | 5.11 x 3.54 x 1.36 инч |
| Зүйлийн жин | 9.1 унц |
| Ашиглалтын хамгийн их температур | 45°C (113°F) |
| Хамгаалалтын онцлог | Reverse polarity, over-voltage, over-current, over-discharge, short-circuit, reverse current. |
8. Баталгаат хугацаа ба дэмжлэг
This HQST product is backed by a 10 жилийн баталгаат хугацаа, 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 webсайт: www.hqst.com
Please have your product model number (20A PWM Flush Mount) and purchase details ready when contacting support.





