HQST 20A PWM Solar Charge Controller User Manual

1. Fampidirana

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. Toetran'ny vokatra

• 20A Solar Charge Controller: Automatically detects 12V or 24V PV systems.
• Batterie mifanentana: Works with Sealed, and Flooded lead-acid batteries.
• Optimized Charging: 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.
• Fiarovana feno: Provides reverse polarity protection, block reverse current at night, short circuit, overcharge, over-discharge, and overload protection for solar panel and battery.
• Fametrahana mora: Designed with corresponding icons on each connector for quick setup.
• Port USB-A: Includes a USB-A port for charging mobile devices or powering small loads.
• Fampiharana maro: Suitable for RVs, cabins, workshops, garages, and other off-grid lighting or power needs.

3. Vokatra mihoatraview

Familiarize yourself with the components of your HQST Solar Charge Controller.

Sary 3.1: anoloana 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.

Sary 3.2: antsipiriany 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. Famaritana

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

Sary 4.2: Illustration of battery types compatible with the HQST Solar Charge Controller, including Sealed, Gel, Flooded, and Lead-Acid batteries.

5. Torolàlana momba ny fiarovana

• Ensure all connections are tight and secure to prevent loose connections that can cause excessive heat.
• Ampifandraiso amin'ny mpanara-maso ny fiampangana aloha ny bateria, avy eo ny takelaka masoandro, ary farany ny entana. Esory amin'ny filaharana mivadika ny fifandraisana.
• Do not connect an inverter directly to the load terminals of the charge controller. Connect inverters directly to the battery.
• Apetraho ao amin'ny toerana mahazo rivotra tsara ny mpanara-maso, lavitry ny tara-masoandro mivantana, ny mari-pana avo ary ny hamandoana.
• Ataovy azo antoka ny rafitra voltage (12V or 24V) matches the battery bank voltage. The controller automatically detects this.
• Use appropriate wire gauges for all connections to prevent voltage mitete sy mafana loatra.
• Manaova fiarovana maso rehefa miasa amin'ny bateria.

6. Fametrahana (Setup)

Araho ireto dingana ireto mba hametrahana tsara ny mpanara-maso ny fiampangana masoandro anao.

1. Mametraka: 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.
2. Connect ny bateria: 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.
3. Ampifandraiso ny panneau solaire: 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.
4. Ampifandraiso ny entana: 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.

Sary 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.

Sary 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. Fampandehanana

Once installed, the controller operates automatically. The LCD display provides real-time information about your system.

7.1 Fampisehoana LCD sy Fampiasa bokotra

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).

• Gazety fohy: Cycles through display parameters.
• Long Press (approx. 5 seconds): Enters or exits setting mode for load control.

7.2 Fanaraha-maso enta-mavesatra

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.

Sary 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. Fikojakojana

Ny fikojakojana tsy tapaka dia miantoka ny fahombiazana tsara indrindra sy ny faharetan'ny fitaovana fanaraha-maso ny fiampangana masoandro anao.

• Jereo ny fifandraisana: Periodically check all wiring connections for tightness and corrosion. Loose connections can lead to power loss and overheating.
• Manadio ny Controller Tazomy ho madio sy tsy misy vovoka na loto ny fitaovana fanaraha-maso. Ampiasao lamba maina hanadiovana azy. Aza mampiasa ranoka.
• Fanaraha-maso ny fampisehoana: Regularly check the LCD display for normal operation and expected readings. Note any unusual behavior.
• Fahasalamana bateria: Ensure your batteries are properly maintained according to their manufacturer's guidelines.

9. Famahana olana

This section addresses common issues you might encounter with your solar charge controller.

10. Warranty sy fanohanana

For warranty information or technical support, please refer to the official HQST webtranokala na mifandray mivantana amin'ny serivisy mpanjifany. Tehirizo ny tapakila fividiananao ho an'ny fitakiana fiantohana.

HQST is committed to providing high-quality solar products and responsive customer service.