1. Introduction
The Cecotec Conga 3890 Ultra is an advanced 4-in-1 robot vacuum cleaner designed to provide comprehensive home cleaning. It features professional laser mapping for efficient navigation, allowing it to memorize and display your home's layout via its Virtual Map in the companion app. This intelligent system ensures thorough cleaning of all traversed surfaces.
Equipped with the innovative OnlyOne System, the Conga 3890 Ultra can simultaneously vacuum, mop, and sweep using its mixed tank for solids and liquids. The special Jalisco brush is designed to capture even the most imperceptible dirt, while the BestFriend Care System includes two interchangeable brushes specifically engineered to prevent tangles and effectively clean pet hair from various surfaces.
Powered by the Absolute Implode System, it boasts a powerful turbine that delivers up to 2300 Pa of suction power. Its OnlySilence technology ensures quiet operation with a sound level below 64 dB. The robot offers an autonomy of up to 150 minutes, and with Total Surface 2.0 technology, it automatically returns to its charging base to recharge and then resumes cleaning any unfinished areas.
Control the Conga 3890 Ultra from anywhere using its Wi-Fi connectivity and the mobile app, which can store up to 5 different maps of your home. For convenience, it can also be controlled via a remote control or integrated with virtual assistants like Alexa and Google Assistant.

2. Important Safety Instructions
- Read all instructions carefully before using the appliance.
- Keep the robot vacuum cleaner and its accessories out of reach of children and pets.
- Ensure proper filter maintenance to maintain optimal performance and prevent damage.
- Do not operate the robot in wet environments or near water sources.
- Avoid using the robot on surfaces with standing water or excessive moisture.
- Do not allow the robot to pick up large objects, sharp items, or liquids.
- Regularly check the brushes and wheels for tangled hair or debris to prevent motor strain.
- Use only the original charging base and power adapter provided with the device.
- Do not attempt to repair or modify the robot yourself. Contact authorized service personnel for assistance.
- Ensure the charging base is placed in an open area with good Wi-Fi signal for optimal connectivity and navigation.
- Keep clothing, hair, and body parts away from moving parts.
3. Product Components
The Cecotec Conga 3890 Ultra package typically includes the following components:
- Conga 3890 Ultra Robot Vacuum Cleaner (Main Unit)
- Charging Base
- Power Adapter for Charging Base
- Remote Control
- Mixed Tank (for solids and liquids)
- Jalisco Brush (specialized for fine dirt)
- BestFriend Care System Brushes (two interchangeable brushes for pet hair)
- Side Brushes (typically two pairs)
- High-Efficiency Filters (spare)
- Cleaning Tool
- Instruction Manual (this document)
4. Initial Setup
4.1 Unpacking and Placement
- Carefully remove all components from the packaging.
- Remove all protective films and stickers from the robot and charging base.
- Place the charging base against a wall in an open area, ensuring there are no obstacles within 1 meter (3 feet) to the sides and 2 meters (6 feet) in front. This allows the robot to easily dock and navigate.
- Plug the power adapter into the charging base and then into a wall outlet. Ensure the cable is neatly tucked away to prevent tangling.
4.2 Initial Charging
Before first use, fully charge the robot. Place the robot onto the charging base, ensuring the charging contacts align. The indicator lights on the robot will show the charging status. A full charge may take several hours.
4.3 App Installation and Wi-Fi Connection
- Download the "Conga" mobile application from your smartphone's app store (iOS or Android).
- Register an account and follow the in-app instructions to add your Conga 3890 Ultra robot.
- Ensure your home Wi-Fi network is 2.4 GHz, as the robot may not support 5 GHz networks.
- Follow the app's prompts to connect the robot to your Wi-Fi network. This typically involves pressing a button on the robot to enter pairing mode.

4.4 Initial Mapping
Once connected, initiate an initial cleaning cycle. The robot will use its iTech Laser 360º navigation to scan and create a virtual map of your home. This map will be displayed in the app and is crucial for efficient and intelligent cleaning.

5. Operating Instructions
5.1 Cleaning Modes
The Conga 3890 Ultra offers 10 selectable cleaning modes to suit various needs:
- Smart Area: Cleans a specific, user-defined area on the map.
- Restricted Area: Defines zones the robot should avoid.
- Spot Cleaning: Focuses on a small, dirty area.
- Twice: Cleans the selected area twice for deeper cleaning.
- Auto: Standard automatic cleaning of the entire mapped area.
- Manual: Control the robot's movement manually via the app or remote.
- Edges: Cleans along walls and furniture edges.
- Room: Cleans a specific room defined on the map.
- Scrubbing: Intensive mopping mode.
- Spiral: Cleans in an expanding spiral pattern from a central point.
- Return Home: Directs the robot back to its charging base.
5.2 OnlyOne System (4-in-1 Functionality)
This technology allows the robot to perform four functions simultaneously: sweeping, vacuuming, mopping, and scrubbing. Ensure the mixed tank is properly filled with water (for mopping/scrubbing) and correctly installed.
5.3 iWater System
The iWater System provides three scrubbing modes for different floor types and cleaning needs:
- High: For deep cleaning and stubborn stains.
- Medium: For regular cleaning.
- Low: For light cleaning or delicate floors.
5.4 VirtualVoice Technology
Integrate your Conga 3890 Ultra with virtual assistants like Amazon Alexa or Google Assistant for convenient voice control. Follow the instructions in the Conga app to link your robot with your smart home system.

5.5 Room Plan 2.0 and Interactive MultiMap
Use the mobile app to manage up to 50 cleaning plans and store up to 5 different maps of your home. This allows for customized cleaning schedules and specific room cleaning for multi-level homes or different floor layouts.
5.6 Total Surface 2.0 Technology
If the robot's battery runs low during a cleaning cycle, it will automatically return to its charging base, recharge, and then resume cleaning from where it left off to ensure the entire area is covered.
5.7 Turbo Clean Carpet System
This system automatically increases suction power when the robot detects it is cleaning on carpets, ensuring a deeper clean for textile surfaces.
6. Maintenance and Care
Regular maintenance is crucial for the optimal performance and longevity of your Conga 3890 Ultra.
6.1 Emptying and Cleaning the Mixed Tank
- After each cleaning cycle, remove the mixed tank.
- Empty any collected dust and debris from the dry compartment.
- Discard any remaining water from the wet compartment.
- Rinse both compartments with clean water. Allow them to air dry completely before reinserting.
6.2 Filter Maintenance
The filters should be cleaned regularly and replaced periodically (every 1-3 months, depending on usage).
- Remove the filter from the mixed tank.
- Tap the filter gently to remove loose dust. Do not wash the HEPA filter with water.
- If washable filters are present, rinse them under running water and ensure they are completely dry before reinstallation.
6.3 Cleaning Brushes
Regularly inspect and clean the main brush (Jalisco Brush) and side brushes, especially if you have pets (BestFriend Care System).
- Remove the main brush cover and lift out the brush.
- Use the provided cleaning tool to cut and remove any tangled hair or fibers.
- Remove the side brushes by gently pulling them up. Clean any hair or debris from the brushes and their posts.
- Reinstall all brushes securely.

6.4 Cleaning Sensors and Charging Contacts
Wipe the robot's sensors (cliff sensors, wall sensors) and the charging contacts on both the robot and the charging base with a clean, dry cloth to ensure proper functionality.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Robot does not turn on or charge. | Battery depleted; charging contacts dirty; power adapter not connected. | Ensure robot is correctly placed on charging base. Clean charging contacts. Check power adapter connection. |
| Robot gets stuck frequently. | Obstacles (cables, rugs); dirty sensors; wheels tangled. | Clear floor of obstacles. Clean cliff and wall sensors. Remove hair/debris from wheels and brushes. |
| Poor cleaning performance. | Full dustbin/tank; dirty filters; worn brushes. | Empty and clean the mixed tank. Clean or replace filters. Clean or replace brushes. |
| App connectivity issues. | Incorrect Wi-Fi password; 5 GHz Wi-Fi network; robot too far from router. | Ensure correct 2.4 GHz Wi-Fi. Move robot closer to router. Re-pair the robot with the app. |
| Robot does not return to charging base. | Charging base obstructed; robot too far; dirty charging contacts. | Ensure clear path to charging base. Clean charging contacts. Manually place robot on base. |
8. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Cecotec |
| Model | Conga 3890 Ultra |
| Type of Vacuum Cleaner | Robot Vacuum Cleaner (4-in-1: Sweeps, Vacuums, Mops, Scrubs) |
| Certification | CE |
| Suction Power | Up to 2300 Pa (Absolute Implode System) |
| Noise Level | < 64 dB (OnlySilence Technology) |
| Battery | 14.8 V 3200 mAh Lithium-Ion |
| Autonomy | Up to 150 minutes |
| Navigation System | iTech Laser 360º, Virtual Map, Interactive MultiMap (stores up to 5 maps) |
| Cleaning Modes | 10 selectable modes (Smart Area, Restricted Area, Spot Cleaning, Twice, Auto, Manual, Edges, Room, Scrubbing, Spiral, Return Home) |
| Mopping System | iWater System (High, Medium, Low scrubbing modes) |
| Voice Control | VirtualVoice Technology (compatible with Alexa, Google Assistant) |
| Cleaning Plans | Room Plan 2.0 (manages up to 50 cleaning plans) |
| Resume Cleaning | Total Surface 2.0 Technology (auto-recharge and resume) |
| Carpet Cleaning | Turbo Clean Carpet System |
| Special Brushes | Jalisco Brush, BestFriend Care System (pet hair) |
| Surface Recommendation | Wood (suitable for all types of floors) |
| Hazardous Materials | Battery |
| Package Dimensions (L x W x H) | 15 cm x 44 cm x 55 cm |
| Package Weight | 37.0 kg |
9. User Tips
- For optimal mapping, ensure your home is well-lit during the robot's initial mapping run.
- Before mopping, ensure the floor is free of large debris to prevent streaks and clogs.
- If you have multiple floors, consider purchasing additional charging bases or manually moving the robot and its base to each floor for mapping.
- Regularly check for software updates through the Conga app to ensure your robot has the latest features and performance improvements.
- To maximize battery life, avoid exposing the robot to extreme temperatures.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Cecotec website or contact their customer service department. Keep your proof of purchase for any warranty claims.





