1. Product Overview
The FirnFose CF-004 is a portable compressor-based car refrigerator designed for versatile use in vehicles (cars, RVs), camping, and home environments. It offers efficient cooling and freezing capabilities with a temperature range of -20℃ to 20℃ (-4℉ to 68℉).

Figure 1: Product overview highlighting built-in compressor, DC/AC connector, digital touch screen, and large capacity.
2. Safety Information
- Ensure the refrigerator is placed on a stable, level surface. It is designed for stable operation at up to a 30° tilt angle, but optimal performance is achieved on level ground.
- Do not block ventilation openings.
- Keep the appliance away from heat sources.
- Do not use electrical devices inside the refrigerator unless they are recommended by the manufacturer.
- Disconnect power before cleaning or maintenance.
- This appliance can be used by children aged 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

Figure 2: The refrigerator maintains stable operation even at a 30° tilt angle, suitable for off-road use.
3. Setup Instructions
3.1 Unpacking and Initial Inspection
- Carefully remove the refrigerator from its packaging.
- Inspect the unit for any signs of damage during transit.
- Remove all internal packaging materials.
- Clean the interior and exterior of the refrigerator with a damp cloth before first use.
3.2 Power Connection
The FirnFose CF-004 supports both DC (12V/24V) and AC (110-240V) power inputs.
- For Car/RV Use (DC 12V/24V): Connect the DC power cable to the refrigerator's DC input port and then to your vehicle's cigarette lighter socket or a dedicated 12V/24V power outlet.
- For Home/Camping Use (AC 110-240V): Connect the AC adapter to the refrigerator's AC input port, then plug the adapter into a standard wall outlet.

Figure 3: The refrigerator comes with both AC adapter and DC car power cables for versatile power options.
3.3 APP Control Setup (Bluetooth)
The refrigerator can be controlled via a smartphone application using Bluetooth. Follow these steps to set up APP control:
- Download the official control application from your smartphone's app store.
- Ensure Bluetooth is enabled on your smartphone.
- Power on the refrigerator.
- Open the application and follow the on-screen instructions to pair with your refrigerator.

Figure 4: The digital control panel and smartphone app allow for easy temperature adjustments and monitoring.
4. Operating Instructions
4.1 Control Panel Overview
The refrigerator features a digital touch screen for easy control. Key functions include:
- Power Button: Turns the unit on/off.
- Set Button: Enters temperature setting mode or cycles through settings.
- Temperature Control Buttons (+/-): Adjusts the desired temperature.
- USB Interface: For charging small electronic devices (if available on your model).
4.2 Setting Temperature
- Press the Power button to turn on the refrigerator.
- Press the Set button to enter temperature adjustment mode.
- Use the + or - buttons to set your desired temperature. The temperature range is -20℃ to 20℃ (-4℉ to 68℉).
- The display will show the current internal temperature and then switch to the set temperature.
4.3 Cooling Modes
The refrigerator can be set for both freezing and refrigerating purposes, depending on the desired temperature. Lower temperatures will freeze contents, while higher temperatures will keep them refrigerated.
4.4 Low Noise Operation
The FirnFose CF-004 is designed for low noise operation, making it suitable for use in quiet environments like bedrooms or tents.
- Silent Night Mode: Approximately 20dB
- Typical Runtime: Approximately 35dB
- Whisper Level: Approximately 45dB

Figure 5: Noise levels for various operating conditions, ensuring a comfortable experience.
5. Maintenance
5.1 Cleaning
- Always disconnect the power supply before cleaning.
- Clean the interior and exterior surfaces with a damp cloth and mild detergent.
- Do not use abrasive cleaners or harsh chemicals.
- Ensure the interior is dry before reconnecting power or storing items.
- Regularly clean the ventilation grilles to ensure proper airflow and efficiency.
5.2 Defrosting
The refrigerator features an Auto-Defrost system, minimizing manual defrosting. However, if a significant layer of ice builds up, manually defrost the unit:
- Turn off the refrigerator and disconnect it from power.
- Remove all contents.
- Leave the lid open to allow ice to melt naturally.
- Wipe away melted water with a clean cloth.
- Do not use sharp objects to remove ice, as this can damage the cooling system.
6. Troubleshooting
If you encounter issues with your FirnFose CF-004 refrigerator, please refer to the following common troubleshooting steps:
- Refrigerator not turning on: Check power connections (DC or AC) and ensure they are securely plugged in. Verify the power source is active.
- Insufficient cooling: Ensure the lid is properly closed and sealed. Check if ventilation openings are clear. Verify the temperature setting is appropriate. Avoid placing hot items directly into the refrigerator.
- Unusual noise: While the unit is designed for low noise, excessive or unusual noises might indicate an issue. Ensure the unit is on a stable surface and not vibrating against other objects.
- Error codes on display: If an error code appears, try restarting the unit by disconnecting and reconnecting power after a few minutes. If the error persists, contact customer support.
For persistent problems, please contact customer support for assistance.
7. Specifications

Figure 6: Detailed specifications for both 9L and 12L models.
| Attribute | Specification |
|---|---|
| Item Name | Car fridge |
| Type | Dual-Zone |
| Refrigeration Type | COMPRESSOR |
| Cooling Mode | Refrigerator |
| Material | ABS, Aluminum |
| Voltage | 12V/24V(DC), 110-240V(AC) |
| Power | 45W |
| Power Consumption | 0.2kw.h/24h |
| Cooling Range | -20 to 10 ℃ (-4℉ to 50℉) |
| Refrigerant | R134a |
| Noise Level | ≤45dB |
| Certification | CE, RoHS, FCC |
| Warranty | 1 Year |
| Weight (9L) | 6.7kg (Net) / 7.8kg (Gross) |
| Weight (12L) | 6.9kg (Net) / 8kg (Gross) |
8. Warranty and Support
8.1 Warranty Information
This FirnFose CF-004 Car Refrigerator comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and material faults under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper installation.
8.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact the seller or manufacturer through the platform where the product was purchased. Please have your purchase details and product model number (CF-004) ready when contacting support.
9. User Tips
- Pre-cool at home: If possible, pre-cool the refrigerator using AC power at home before taking it on a trip. This helps it reach the desired temperature faster and reduces battery drain in your vehicle.
- Optimize packing: Pack items efficiently to maximize cooling performance and minimize empty space.
- Monitor battery: When using in a vehicle, be mindful of your vehicle's battery level, especially if the engine is off for extended periods. Some models may have low-voltage protection, but it's always good practice to monitor.
- Ventilation: Ensure there is adequate space around the refrigerator for proper ventilation to prevent overheating and maintain efficiency.