1. Introduction
The Bosch Flexxo Serie 4 is a versatile 2-in-1 cordless vacuum cleaner designed for quick and thorough cleaning. It combines the functionality of a powerful stick vacuum with a convenient integrated handheld unit, making it suitable for various cleaning tasks around your home and car. This manual provides essential information for the safe and efficient use, maintenance, and troubleshooting of your appliance.
2. Safety Information
Please read all safety instructions and warnings carefully before using the appliance. Keep this instruction manual for future reference.
- This appliance is intended for domestic use only. Do not use it for commercial or industrial purposes.
- Do not vacuum liquids, wet dirt, or hot ashes.
- Ensure the appliance is fully assembled before use.
- Keep packaging materials away from children.
- Only use the original charging adapter supplied with the appliance.
- Do not operate the appliance if it is visibly damaged.
- Do not immerse the appliance in water or other liquids.
3. Package Contents
Carefully unpack your Bosch Flexxo Serie 4 and check for the following components:

Image: Bosch Flexxo Serie 4 vacuum cleaner, showing the main unit, handheld vacuum, crevice nozzle, 2-in-1 furniture brush, and product packaging.
- 1 x Bosch Flexxo Serie 4 2-in-1 Cordless Vacuum Cleaner (main stick unit with integrated handheld vacuum)
- 1 x Lithium-ion battery (integrated)
- 1 x Extendable Crevice Nozzle
- 1 x 2-in-1 Furniture Brush with Upholstery Nozzle
- 1 x Charging Cable/Adapter
- 1 x User Manual
4. Setup
4.1 Assembly
The Bosch Flexxo Serie 4 typically comes pre-assembled or requires minimal assembly. Ensure all parts are securely connected before first use.
- Insert the handheld vacuum into the main stick unit until it clicks into place.
- Attach the floor nozzle to the main stick unit.
- Store the accessories (crevice nozzle, furniture brush) in their designated slots on the main unit for easy access.

Image: The Bosch Flexxo Serie 4 in its 2-in-1 configuration, with the handheld unit shown both integrated and detached from the main stick vacuum body.
4.2 Initial Charging
Before first use, fully charge the appliance. The integrated Lithium-ion battery requires approximately 4 to 5 hours for a full charge.
- Connect the charging adapter to the charging port on the vacuum cleaner.
- Plug the adapter into a suitable power outlet.
- The charging indicator lights will illuminate, showing the charging status.
- Once fully charged, the indicator lights will change or turn off, depending on the model.
5. Operating Instructions
5.1 Powering On/Off and Speed Settings
The vacuum cleaner features two speed settings for different cleaning needs.
- To turn on, press the power button. The appliance will start in the standard speed setting.
- Press the speed selection button to switch to the higher power setting for more intensive cleaning.
- Press the power button again to turn off the appliance.

Image: A woman using the Bosch Flexxo Serie 4, first as a stick vacuum on a floor, then detaching the handheld unit for smaller tasks.
5.2 Using as a Stick Vacuum
The stick vacuum mode is ideal for cleaning floors, carpets, and larger areas.
- Ensure the handheld unit is securely docked in the main stick body.
- Use the floor nozzle for effective cleaning on various surfaces.
- The RobustAir system and EasyClean brush ensure thorough dirt pick-up.

Image: The Bosch Flexxo Serie 4 stick vacuum cleaning under a light blue armchair, demonstrating its maneuverability for reaching difficult areas.
5.3 Using as a Handheld Vacuum
The integrated handheld vacuum is perfect for cleaning furniture, car interiors, and hard-to-reach spots.
- Press the release button to detach the handheld unit from the main stick body.
- Attach the desired accessory (crevice nozzle or 2-in-1 furniture brush) to the handheld unit.
- Use the crevice nozzle for narrow gaps and corners.
- Use the 2-in-1 furniture brush for upholstery and delicate surfaces.

Image: The handheld unit of the Bosch Flexxo Serie 4 being used to clean crumbs from a kitchen countertop.

Image: The handheld unit of the Bosch Flexxo Serie 4 being used to clean the interior of a car, specifically between the seats.
6. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your vacuum cleaner.
6.1 Emptying the Dust Bin
Empty the dust bin regularly, especially when the maximum fill line is reached, to maintain suction power.
- Detach the handheld unit.
- Locate the dust bin release button and open the bin.
- Empty the contents into a waste bin.
- Close the dust bin securely.
6.2 Cleaning the Filter
The filter is washable and should be cleaned periodically.
- Remove the filter from the dust bin.
- Tap the filter gently to remove loose dust.
- Rinse the filter under cold running water until the water runs clear.
- Allow the filter to air dry completely for at least 24 hours before reinserting it. Do not use a dryer or heat source.
6.3 Cleaning the Brush Roll (EasyClean)
The EasyClean brush roll can be easily removed for cleaning tangled hair or debris.
- Turn off the vacuum cleaner.
- Locate the brush roll release mechanism on the floor nozzle.
- Remove the brush roll.
- Cut and remove any tangled hair or fibers.
- Reinsert the brush roll until it clicks into place.
7. Troubleshooting
If you encounter issues with your Bosch Flexxo Serie 4, refer to the following common solutions:
- No Power/Does not turn on: Ensure the battery is charged. Check if the charging adapter is properly connected.
- Low Suction Power: Empty the dust bin. Clean or replace the filter. Check the brush roll and nozzles for blockages.
- Appliance stops during operation: The battery might be depleted. Recharge the appliance.
- Charging indicator not working: Ensure the charging adapter is correctly plugged into both the appliance and the power outlet.
If the problem persists after attempting these solutions, please contact Bosch customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Bosch Home Appliances |
| Model Number | BCH3P210 |
| Type | Cordless 2-in-1 Stick and Handheld Vacuum Cleaner |
| Voltage | 21.6 Volts |
| Power | 21.6 Watts |
| Battery Type | Lithium-ion |
| Charging Time | 4-5 hours |
| Max. Runtime | Up to 50 minutes |
| Number of Speeds | 2 |
| Dust Bin Capacity | Large (bagless) |
| Filter Type | Washable |
| Noise Level | 76 Decibels |
| Dimensions (L x W x H) | 26.5 x 18 x 115 cm |
| Weight | 3 Kilograms |
| Material | Plastic |
| Special Features | Cordless, Washable filter, Bagless, Crevice nozzle, Upholstery brush, Furniture brush, Handle control |

Image: A diagram illustrating the dimensions of the Bosch Flexxo Serie 4, showing a height of 115 cm, width of 26.5 cm, and depth of 18 cm.

Image: An annotated diagram of the Bosch Flexxo Serie 4, pointing out its key features: the detachable handheld unit, the extendable crevice nozzle, the AllFloor Power Brush, and the 2-in-1 furniture and upholstery nozzle.
9. Warranty and Support
Your Bosch Flexxo Serie 4 vacuum cleaner comes with a manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including the warranty period and coverage details.
For technical support, spare parts, or service inquiries, please contact Bosch customer service. You can find contact information on the Bosch Home Appliances website or in your product documentation.
Please have your model number (BCH3P210) and purchase date ready when contacting support.

Image: A document displaying the Bosch Repairability Index, indicating a score of 8.6/10 for repairability.