1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your Sunster 8KW 12V/24V Portable Diesel Air Heater. This device is designed to prevent damage to vehicles caused by sudden temperature drops, improve interior comfort, and preheat engine coolant to reduce wear in low temperatures. It is also effective for defrosting car windows and assisting with vehicle starts in cold conditions.
2. Product Features & Highlights
- High Power Output: 8KW heating capacity, suitable for 12V and 24V systems.
- Wide Applicable Range: Effectively heats areas of 215-269 sq ft (20-25 sq m).
- Efficient Fuel Consumption: Consumes 0.11-0.45 L/H, with an average of 0.3 L/H.
- Large Fuel Tank: Equipped with a 10-liter (2.6-gallon) tank, providing approximately 30 hours of continuous heating.
- Bluetooth App Control: Manage settings, heating plans, and monitor performance via the 'Sunster Neo' app (available on Google Play and App Store).
- Ventilation Mode: Circulates air without heating, useful for warmer days or preventing moisture buildup.
- Automatic Start & Stop (Thermostat): Features a smart thermostat that automatically turns the heater off when the set temperature is reached and reactivates when the temperature drops, ensuring constant heat and energy efficiency.
- Multiple Control Methods: Control the heater via Bluetooth (up to 98 feet/30 meters), a remote control, or the integrated LCD display.
- Adjustable Temperature Range: Set desired temperatures between 46°F-95°F (8°C-35°C).
- Ultra-Low Noise Operation: Designed with a silent fan and quiet oil pump, operating at ≤35dB for a peaceful environment.
- Safety Features: Includes a self-test function, short-circuit protection, intelligent temperature control, and overheat protection (activates at ≥518°F/270°C).
- Durable Construction: Made from high-quality aluminum alloy for fast heating, good heat dissipation, minimal carbon buildup, and long service life.
- Versatile Applications: Ideal for cars, RVs, trucks, yachts, motorhomes, homes, garages, stores, and tents.
3. Package Contents
The following items are included in your product package:
Image: Sunster Diesel Air Heater and all included accessories.
- Air Diesel Heater Unit
- LCD Switch
- Remote Control
- 10L Fuel Tank
- Oil Filter
- Oil Pump
- Air Outlet Grid
- Air Filter
- Silencer
- T Connector
- Fuel Pump Rubber Clip
- Intake/Exhaust Pipe
- Air Outlet Pipe
- Wire Harness
- Fixed Plate
- Fixed Cable
- Fuel Hose
- Fixture Accessories Set (x2)
- User Manual (PDF)
4. Specifications
| Feature | Specification |
|---|---|
| Fuel | Diesel Only |
| Rated Power | 8KW |
| Rated Voltage | 12V & 24V |
| Fuel Consumption | 0.11-0.45 (L/H) |
| Working Ambient Temperature | -40°C~+20°C / -40°F~+68°F |
| Oil Pump Working Temperature | -40°C~+20°C / -40°F~+68°F |
| Start-up Power Consumption | 9-11A |
| Working Power Consumption | 1-3A |
| Applicable Range | 215-269ft²/20-25m² |
| Tank Capacity | 10L/2.6gal |
| Adjustable Temp. Range | 46°F-95°F / 8°C-35°C |
| Air Outlet Pipe Diameter | 76mm |
| Intake Pipe Diameter | 25mm |
| Exhaust Pipe Diameter | 25mm |
| Control Method | LCD + Remote Control + Bluetooth App |
| Material | Aluminum + Plastic |
| Certification | RoHS, FCC, CE |
| Noise Level | ≤35dB |
| Dimensions (L x W x H) | 38cm x 13.5cm x 14cm |
Image: Product dimensions and detailed specifications.
5. Setup & Installation
Proper installation is crucial for the safe and efficient operation of your diesel air heater. It is recommended to have the installation performed by a qualified professional.
Image: Internal structure of the diesel air heater, showing components like the combustion chamber, air inlet, and air outlet.
Image: Exploded view of the diesel air heater components, including the fuel pump, aluminum body, and ignition plug.
For detailed installation diagrams and step-by-step instructions, please refer to the comprehensive user manual PDF: User Manual (PDF).
First-Time Use / Manual Pump Oil
When installing the heater for the first time or if the fuel line is not completely filled, you may need to manually pump oil to prime the system:
- Ensure the heater is powered on.
- Long press the [knob] on the control panel for 5 seconds.
- The screen will flash and display a 300-second countdown. This indicates the manual oil pumping process has started.
- Wait for the countdown to end, or press the [ON/OFF] button to stop the pumping process early.
Video: Demonstrates manual oil pumping process (02:11 - 02:19).
6. Operating Instructions
6.1. Control Panel (LCD Switch)
Image: LCD control panel and remote control, highlighting key functions.
Power On/Off
- Power On: In shutdown state, press the power button to turn on the heater. The LCD screen will display the current status.
- Power Off: In the running state, press the power button to turn off the heater. The LCD display will turn off after the shutdown sequence is complete.
Video: Demonstrates power on/off operation (00:00 - 00:03).
Operating Modes
- Ventilation Mode: The fan operates without heating. Wind speed can be set from 1 to 10 gears.
- Gear Mode: Heating according to a set gear (1-10 gears).
- Strong Heating Mode: Heater runs at maximum output power for up to 2 hours.
- Temperature Control Mode: The heater automatically adjusts its operating gear based on the difference between the set temperature (8°C-35°C) and the ambient temperature. It will not stop, even at the lowest gear.
- Constant Temperature Mode: Similar to Temperature Control Mode. The heater stops heating when the ambient temperature is 2°C higher than the set temperature and enters standby. It automatically restarts when the ambient temperature drops 2°C below the set temperature.
To switch between modes, press the [knob] on the control panel while the heater is running.
Video: Demonstrates gear adjustment (00:04 - 00:10).
Parameter Adjustment
Rotate the [knob] to adjust the setting gear or temperature. Rotating clockwise increases the value (+1 per gear/°C), up to 10 gears/36°C. Rotating counter-clockwise decreases the value (-1 per gear/°C), down to 1 gear/8°C.
Video: Demonstrates numerical adjustment (00:11 - 00:22).
Viewing CO Value
In the running state, press the [knob] twice in a row to view the current carbon monoxide (CO) value. Press the power button to exit this display.
Video: Demonstrates checking CO value (01:44 - 01:48).
Setting Mode (Base Model)
To enter the setting mode, press and hold the power button for 3 seconds while the heater is running. 'F0' will be displayed in the upper left corner of the LCD screen. Rotate the [knob] to navigate through the settings (F0-FC). Press the [knob] to select an item, rotate to adjust the value, then press the [knob] again to confirm and save. Finally, press the power button to exit.
Video: Demonstrates entering and navigating the base model settings (00:23 - 01:43).
| Setting Code | Description | Adjustment Range/Options |
|---|---|---|
| F0 | Current Time Setting | HH:MM (24-hour system) |
| F1 | Timing Start Time Setting | Set specific start time |
| F2 | Running Time After Starting | 0-10 hours (1 unit = 30 minutes) |
| F3 | Timing Function On/Off Setting | oN (open) / oF (closed) |
| F4 | Voice Broadcast Language Setting | Chinese/English/Russian/Voice off |
| F5 | Ambient Temperature Compensation Setting | -9°C to 9°C (factory default 0°C) |
| F6 | Fuel Tank Oil Level Setting | 5-50L (1 unit = 5L) |
| F7 | Fuel Pump Type Setting | 16U / 22U |
| F8 | Constant Temperature Mode Function Setting | oN (open) / oF (closed) |
| F9 | Temperature Unit Switching Setting | °F / °C |
| FA | Backlight Brightness Level Setting | 5-100 (100 = no decrease, 0 = off) |
| Fb | Full Tank Icon Setting | Long press knob to fill icon |
| FC | Carbon Monoxide Alarm Value Setting | 0-500 (default 0, requires A2422 CO remote) |
6.2. Remote Control
Image: LCD control panel and remote control, highlighting key functions.
Remote Control Matching
- Ensure the heater is in shutdown state.
- Press the [knob] on the control panel three times in a row. The screen will display 'P-1'.
- Press any button on the remote control.
- If the match is successful, the interface will automatically exit. The remote control can now operate the heater.
Video: Demonstrates remote control matching (01:59 - 02:10).
Clearing Remote Control Matching Data
To clear existing matching data, press and hold the [ON/OFF] button on the control panel when powered on. Wait for the interface to show 'CLr' becoming 'SUC' (Success).
6.3. Bluetooth App Control
Image: Bluetooth app control interface on a smartphone.
- Download App: Open your device's App Store (iOS) or Google Play (Android) and search for 'Sunster' or 'Sunster Neo'. Download and install the application.
- Enter Engineering Mode: With the heater powered on, press and hold the [knob] for 5 seconds to enter engineering mode.
- View Bluetooth Code: Rotate the [knob] to adjust to 'En09' to view the heater's Bluetooth code.
- Connect via App: Open the 'Sunster Neo' mobile app and ensure Bluetooth is enabled on your phone. Search for Bluetooth devices and connect to the device matching the code displayed on the heater's screen.
- Once connected, the heater can be operated through the mobile app.
Video: Demonstrates Bluetooth connection process (02:20 - 02:50).
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Sunster Diesel Air Heater. While specific maintenance schedules are detailed in the full PDF manual, general practices include:
- Regular Cleaning: Keep the air inlet and outlet free from dust and debris to ensure proper airflow and prevent overheating.
- Fuel System Check: Periodically inspect the fuel tank for adequate fuel levels and ensure the fuel pipe is not blocked or damaged.
- Wiring Inspection: Check the main wiring harness and all electrical connections for any signs of wear or damage.
- Component Integrity: Ensure all components, including the ignition plugin, pump plugin, and fan plugin, are securely connected and functioning correctly. Replace any faulty parts as needed.
For detailed maintenance procedures and schedules, please consult the full user manual PDF: User Manual (PDF).
8. Troubleshooting (E-Code Display)
The LCD display shows error codes (E-codes) to indicate specific issues. Refer to the table below for common error codes and their solutions:
| Error Code | Type of Fault | Solution |
|---|---|---|
| E01 | Supply Voltage Overrun | Check the battery output voltage: 9-16V for 12V heater, 18-30V for 24V heater. |
| E03 | Ignition Unit Fault | Check if the ignition plugin is disconnected. If not, replace it with a new one. |
| E04 | Pulse Pump Fault | Check if the pump plugin is disconnected. If not, replace it with a new one. Check if the main wiring harness is broken. |
| E05 | Overheating | Check if the air inlet and outlet are blocked. |
| E06 | Fan Fault | Check if the fan plugin is disconnected. If not, replace it with a new one. |
| E07 | Air Intake Sensor Abnormality | Mainboard failure. Replace the mainboard. |
| E08 | Lack of Fuel | Check if the fuel tank is empty and add fuel. |
| E09 | Overheat Sensor Fault | Check if the sensor plugin is disconnected. If not, replace it with a new one. |
| E10 | Startup Failure | Check if the fuel tank is empty and add fuel, or check if the fuel pipe is blocked. |
| E11 | Carbon Monoxide Exceeds Standard (connect A2422) | If CO concentration exceeds the standard, open windows for ventilation and evacuate the area immediately. |
9. User Tips
- Understanding Auto Stop: The 'Auto stop' feature is part of the constant temperature mode. It means the heater will automatically turn off once the set temperature is reached and will automatically restart when the temperature drops. This is a normal, energy-saving function and not an indication of a fault.
- Bluetooth Connection: If you have trouble connecting via Bluetooth, ensure you are in the engineering mode (long press knob for 5s) and have navigated to 'En09' to view the correct Bluetooth code for matching in the app.
- Initial Fueling: Always perform the manual pump oil procedure during the first installation or after running out of fuel to ensure the fuel lines are properly primed.
10. Warranty & Support
Sunster is the factory's own brand, committed to providing quality products and excellent customer service. All products are certified by CE, WEE, FCC, EAC, and UKCA.
We offer 24-hour online after-sales service. If you encounter any problems or have questions, please:
- Contact the store customer service directly.
- Send an email to our after-sales support team at: cs@sunster.tech
For business inquiries, please contact: sunster@sunster.tech