1. Giriş
This manual provides detailed instructions for the installation, operation, and maintenance of your HQST 20A PWM Solar Charge Controller. This device is designed to manage the power flow from your solar panel to your battery, ensuring efficient charging and protecting your battery from overcharge and over-discharge. It is compatible with 12V and 24V PV systems and various lead-acid battery types.
2. Ürün Özellikleri
- 20A Solar Charge Controller: Automatically detects 12V or 24V PV systems.
- Pil Uyumluluğu: Works with Sealed, and Flooded lead-acid batteries.
- Optimize Edilmiş Şarj: Features an optimized 3-stage battery charging system to regulate electricity flow and prolong battery lifespan.
- Accurate LCD Display: Large digital LCD display clearly indicates working conditions and accurate operating data for real-time PV system monitoring.
- Kapsamlı Koruma: Provides reverse polarity protection, block reverse current at night, short circuit, overcharge, over-discharge, and overload protection for solar panel and battery.
- Kolay Kurulum: Designed with corresponding icons on each connector for quick setup.
- USB-A Bağlantı Noktası: Includes a USB-A port for charging mobile devices or powering small loads.
- Çoklu Uygulamalar: Suitable for RVs, cabins, workshops, garages, and other off-grid lighting or power needs.
3. Ürün Bittiview
Familiarize yourself with the components of your HQST Solar Charge Controller.

Şekil 3.1: Ön view of the HQST Solar Charge Controller with key components labeled, including mounting holes, LCD screen, control keys, solar panel terminals, battery terminals, load terminals, and USB port.

Şekil 3.2: Ayrıntılı view of the LCD display, showing indicators for PV (solar panel), BAT (battery), LOAD, parameter digits, and units (kWh, %, V, °C). It also illustrates the power flow from solar panel to battery to load.
4. Özellikler
| Özellik | Şartname |
|---|---|
| Örnek | 20A PWM'si |
| Sistem Hacmitage | 12V / 24V Otomatik |
| Maksimum Şarj Akımı | 20A |
| Pil Tipi Uyumluluğu | Sealed, Flooded Lead-Acid Batteries |
| Görüntü Türü | LCD |
| USB Çıkışı | 5V/1A (USB-A Port) |
| Ürün Boyutları | 5.12 x 1.38 x 2.95 inç (13 x 3.5 x 7.5 cm) |
| Ürün Ağırlığı | 4.9 ons (0.14 kg) |
| Üretici | HQST |
| UPC | 791810331544, 810081407366 |

Şekil 4.1: Physical dimensions of the HQST Solar Charge Controller, showing length (6.45 in), width (4.07 in), and height (1.85 in).

Şekil 4.2: Illustration of battery types compatible with the HQST Solar Charge Controller, including Sealed, Gel, Flooded, and Lead-Acid batteries.
5. Güvenlik Talimatları
- Ensure all connections are tight and secure to prevent loose connections that can cause excessive heat.
- Aküyü her zaman önce şarj kontrol cihazına, ardından güneş paneline ve son olarak da yüke bağlayın. Bağlantıyı kesme işlemi ise ters sırada yapılmalıdır.
- Do not connect an inverter directly to the load terminals of the charge controller. Connect inverters directly to the battery.
- Kontrol cihazını iyi havalandırılan bir alana, doğrudan güneş ışığından, yüksek sıcaklıklardan ve nemden uzak bir yere kurun.
- Sistem hacminin sağlanmasıtage (12V or 24V) matches the battery bank voltage. The controller automatically detects this.
- Use appropriate wire gauges for all connections to prevent voltage düşme ve aşırı ısınma.
- Pillerle çalışırken göz koruyucu kullanın.
6. Kurulum (Setup)
Güneş enerjisi şarj kontrol cihazınızın doğru kurulumu için şu adımları izleyin.
- Montaj: Choose a dry, well-ventilated location for mounting the controller. Ensure there is sufficient space around the controller for heat dissipation. Use the mounting holes provided on the unit.
- Pili bağlayın: Connect the battery to the battery terminals on the charge controller. Ensure correct polarity (+ to + and - to -). The LCD display should illuminate, indicating the controller has detected the battery voltage.
- Güneş Panelini Bağlayın: Connect the solar panel to the solar panel terminals on the charge controller. Ensure correct polarity. The controller will begin charging the battery if sunlight is available.
- Yükü bağlayın: Connect your DC loads (e.g., lights, fans) to the load terminals. Ensure correct polarity. The USB-A port can also be used for charging compatible devices.
Important Connection Order: Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order: load first, then solar panel, then battery.

Şekil 6.1: A typical wiring diagram showing the connection of a 12V solar panel, the HQST PWM charge controller, a 12V deep cycle battery, and a 12V power inverter. Note the recommended fuse placement and wire gauges.

Şekil 6.2: Visual step-by-step guide for connecting the HQST Solar Charge Controller: 1. Connect the battery. 2. Connect the solar panel. 3. Connect the load (light bulb). This sequence ensures safe and proper system setup.
7. Operasyon
Once installed, the controller operates automatically. The LCD display provides real-time information about your system.
7.1 LCD Ekran ve Düğme Fonksiyonları
The LCD cycles through various parameters such as battery voltage, charging current, load current, and temperature. The single red button is used to manually cycle through display modes or to enter settings for load control (e.g., timer settings for lights).
- Kısa Basış: Cycles through display parameters.
- Uzun basma (yaklaşık 5 saniye): Enters or exits setting mode for load control.
7.2 Yük Kontrolü
The controller offers programmable load control. You can set the load to turn on/off based on daylight or a timer. Refer to the specific settings menu on the LCD for detailed configuration. The USB-A port is typically powered when the load output is active.

Şekil 7.1: The HQST Solar Charge Controller featuring a USB-A port, which can be used to charge mobile devices or power small USB-compatible electronics.
8. Bakım
Düzenli bakım, güneş enerjisi şarj kontrol cihazınızın optimum performansını ve uzun ömrünü sağlar.
- Bağlantıları Denetle: Periodically check all wiring connections for tightness and corrosion. Loose connections can lead to power loss and overheating.
- Kontrol Ünitesini Temizleyin: Kumanda ünitesini temiz tutun ve tozdan ve kirden arındırın. Temizlik için kuru bir bez kullanın. Sıvı kullanmayın.
- Performansı İzle: Regularly check the LCD display for normal operation and expected readings. Note any unusual behavior.
- Pil Sağlığı: Ensure your batteries are properly maintained according to their manufacturer's guidelines.
9. Sorun Giderme
Bu bölümde, güneş enerjisi şarj kontrol cihazınızla karşılaşabileceğiniz yaygın sorunlar ele alınmaktadır.
| Sorun | Olası Neden | Çözüm |
|---|---|---|
| Kumanda açılmıyor / LCD ekran boş | Pil bağlı değil veya kutupları ters takılmış; pil hacmitage çok düşük. | Pil bağlantılarını ve kutuplarını kontrol edin. Pilin doluluk oranını kontrol edin.tage, minimum çalışma voltajının üzerindedir.tage (tipik olarak 8V). |
| Pil şarj olmuyor | Solar panel not connected or reverse polarity; insufficient sunlight; damaged solar panel or wiring. | Check solar panel connections and polarity. Ensure adequate sunlight. Inspect solar panel and wiring for damage. |
| Yükleme çalışmıyor. | Load not connected or reverse polarity; load current exceeds controller rating; battery voltage too low; load control setting. | Check load connections and polarity. Ensure load current is within 20A. Check battery voltage. Adjust load control settings if a timer or light sensor mode is active. |
| LCD'de hata kodları | Specific system fault (e.g., overcharge, over-discharge, short circuit). | Refer to the controller's internal error code list (if available in a more detailed manual) or contact HQST support. Address the underlying issue (e.g., reduce load, check battery). |
10. Garanti ve Destek
For warranty information or technical support, please refer to the official HQST webSite üzerinden satın alabilir veya doğrudan müşteri hizmetleriyle iletişime geçebilirsiniz. Garanti talepleriniz için satın alma fişinizi saklayın.
HQST is committed to providing high-quality solar products and responsive customer service.





