1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Sunster Car Heater A2302B. This device features an intelligent LCD switch, remote control, and Bluetooth APP connectivity, designed for universal 12V and 24V vehicle systems. Please read this manual thoroughly before using the product to ensure safe and efficient operation.
2. Package Contents
Please check the package for the following items:
- 1 x A2302B LCD Monitor (Control Panel)
- 1 x Remote Control
- (Additional components such as wiring harnesses, mounting brackets, and exhaust pipes may be included depending on the specific kit purchased.)
3. Product Features
The Sunster Car Heater A2302B offers a range of features for convenient and effective vehicle heating:
- Universal Voltage: Compatible with both 12V and 24V vehicle electrical systems.
- Intelligent LCD Display: Easy-to-read screen for monitoring and controlling heater functions.
- Remote Control: Convenient operation from a distance.
- Bluetooth APP Control: Manage heater settings via a smartphone application (search 'Sunster' in Google Play or App Store).
- 24-Hour Timing Function: Schedule heating operation.
- Temperature/Gear Regulation: Adjust heating intensity and temperature.
- Language Switching: Supports German, English, Russian, and Chinese.
- Automatic Temperature Calibration: Ensures accurate temperature control.
- Automatic Start and Stop: For efficient operation.
- Ventilation Mode: Circulate air without heating.
- Turbo Heat Mode: For rapid heating.
- Pump Oil Volume Setting: Automatic adjustment for fuel delivery.
- Fault Display: Provides 8 fault codes for troubleshooting.
- Temperature Compensation: Adjustable range of -9°C to +9°C.
- Query Machine Status: Check current operating parameters.
- Temperature Scale Switch: Toggle between Fahrenheit (°F) and Celsius (°C).
- Display Altitude: Shows current altitude.
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Sunster |
| Model | A2302B |
| Item Type | Heating & Fans |
| Voltage | 12V-24V Universal |
| Material | Plastic |
| Operation Method | Adjustment Knob |
| Time Setting | Yes |
| Pump Oil Volume Setting | Automatic |
| Remote Control Code | Yes |
| Query Machine Status | Yes |
| Temperature Scale Switch | °F/°C (Default °F) |
| Fault Display | 8 Fault Codes |
| Language Selection | Chinese, English, Russian |
| Automatic Start and Stop | Yes |
| Bluetooth APP Function | Yes |
| Timer Switch | Yes |
| Temperature Compensation Range | -9°C ~ +9°C |
| Ventilation Function | Yes |
| Turbo Heat Mode | Yes |
| Display Altitude | Yes |
5. Setup
This section provides general guidance for setting up your Sunster Car Heater. For detailed installation instructions, please refer to the specific installation guide provided with your complete heater kit, as wiring and mounting can vary.
5.1 Connecting the LCD Switch
- Locate the wiring harness for the LCD switch.
- Connect the 4-pin connector from the LCD switch to the corresponding port on the main heater unit's wiring harness. Ensure a secure connection.
- Mount the LCD switch in a convenient and accessible location within your vehicle, ensuring it does not obstruct driving or safety features.
5.2 Remote Control Pairing
The remote control may come pre-paired. If not, or if you need to re-pair it:
- Ensure the heater is powered on.
- Refer to the specific pairing instructions in your heater's main manual, as the process can vary. Typically, this involves pressing a button on the LCD switch or main unit while simultaneously pressing a button on the remote.
5.3 Bluetooth APP Setup
- Download the 'Sunster' app from your smartphone's app store (Google Play for Android, App Store for iOS).
- Ensure Bluetooth is enabled on your smartphone.
- Open the Sunster app and follow the on-screen instructions to connect to your A2302B heater.
6. Operating Instructions
6.1 Using the LCD Switch
- Power On/Off: Press the 'ON/OFF' button on the LCD switch to turn the heater on or off.
- Adjusting Settings: Use the adjustment knob (UP/DOWN) to navigate through menus and change values such as temperature, fan speed (gear), and timer settings.
- Menu Navigation: Short press the knob to confirm selections or enter sub-menus. Long press to exit menus or return to the main screen.
- Temperature Scale: Switch between °F and °C as desired in the settings menu.
- Language: Select your preferred language (Chinese, English, Russian) from the settings.
- Timing Function: Set a specific time for the heater to start or stop.
- Ventilation Mode: Activate this mode to circulate air without heating.
- Turbo Heat Mode: Engage for maximum heating power.
6.2 Using the Remote Control
The remote control provides basic functions for convenience:
- ON/OFF: Press the 'ON' or 'OFF' button to power the heater.
- Temperature/Gear Adjustment: Use the '+' and '-' buttons to increase or decrease the temperature or fan speed.
6.3 Using the Bluetooth APP
The Sunster app offers comprehensive control over your heater:
- Remote Operation: Turn the heater on/off, adjust temperature, and fan speed from your smartphone.
- Timing Functions: Set and manage heating schedules.
- Mode Selection: Switch between heating, ventilation, and turbo heat modes.
- Status Monitoring: Query the machine status, including current temperature, voltage, and other parameters.
- Settings: Access and modify advanced settings like language, temperature compensation, and pump oil volume.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your car heater:
- Cleaning: Periodically wipe the LCD switch and remote control with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Inspection: Regularly check all connections for tightness and signs of wear or damage.
- Air Intake/Exhaust: Ensure the heater's air intake and exhaust vents are clear of obstructions.
- Fuel System: If applicable, ensure the fuel lines and filter are clean and free of blockages.
8. Troubleshooting
The A2302B LCD switch can display up to 8 fault codes to help diagnose issues. If your heater is not functioning correctly, check the LCD display for any error messages.
- No Power: Check vehicle battery connections and the heater's power supply. Ensure the voltage is within the 12V-24V universal range.
- Heater Not Starting: Verify fuel supply, glow plug operation, and air intake/exhaust. Check for relevant fault codes.
- Inaccurate Temperature Reading: Check the temperature sensor connection. Consider adjusting the temperature compensation setting if a consistent offset is observed.
- Remote Control Not Responding: Check battery in the remote. Re-pair the remote if necessary (refer to section 5.2).
- APP Connection Issues: Ensure Bluetooth is on, the app is updated, and the heater is powered on. Try restarting both the app and the heater.
For specific fault code interpretations and advanced troubleshooting, consult the comprehensive heater manual that came with your main unit or contact Sunster customer support.
9. User Tips
- Pre-heat Effectively: Utilize the 24-hour timing function to pre-heat your vehicle before you need to use it, saving time and ensuring comfort.
- Optimize Fuel Consumption: Use the temperature/gear regulation to find the optimal balance between warmth and fuel efficiency. Avoid running on maximum heat unnecessarily.
- App Convenience: Take advantage of the Bluetooth app for controlling the heater from outside the vehicle, especially useful for starting it remotely on cold mornings.
- Regular Checks: Perform quick visual checks of the heater's exhaust and intake for obstructions, especially after driving in snowy or muddy conditions.
10. Warranty and Support
Sunster products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your purchase or contact your retailer. Keep your purchase receipt as proof of purchase.





