Bosch Air 4000 - User Manual

Questions and Answers

T
Timothy ClarkJul 28, 2025
What to do if my Bosch Air Cleaner is not improving air quality?
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  shaneclarkJul 28, 2025
  If your Bosch Air Cleaner isn't improving air quality despite running for a while, try these steps: * Ensure the plastic cover is removed from the filter. * Verify the filter is correctly installed. * Clean and dry the particle sensor if it's wet due to high humidity. * Close doors and windows for better performance in large rooms or with poor outdoor air quality. * Address indoor pollutants like smoke or strong scents. * Consider replacing the filter if it's old.
A
Alexis CunninghamAug 1, 2025
Why does the air quality light on my Bosch Air 4000 Air Cleaner always stay the same color?
- J
  Janice OrtegaAug 1, 2025
  If the air quality light on your Bosch Air Cleaner always stays the same color, it's likely that the particle sensor is dirty. Clean the particle sensor. If the air quality is genuinely good, the light should consistently display a blue color.
G
Gabriela MillsAug 5, 2025
How to fix weak airflow from my Bosch Air 4000 Air Cleaner?
- J
  Joshua SmithAug 6, 2025
  If the airflow from your Bosch Air Cleaner is significantly weaker than usual, the filter surface is likely dirty. Clean the surface of the filter.
K
Kristin PhillipsAug 9, 2025
Why is my Bosch Air 4000 Air Cleaner not improving air quality?
- M
  Misty TylerAug 9, 2025
  If your Bosch Air Cleaner isn't improving air quality despite running for a long time, several factors could be at play. First, ensure the plastic cover has been removed from the filter and that the filter is correctly installed. A wet particle sensor due to high humidity might also be the cause; ensure it's clean and dry. For best results, close doors and windows during operation. Additionally, consider that indoor pollutants like smoke or strong smells, a large room, poor outdoor air quality or an expired filter may be the reason. If the filter has reached the end of its life, replace it.
M
Ms. Rachel MooreAug 14, 2025
Why does my Bosch Air 4000 Air Cleaner have a strange smell?
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  Kristen JohnsonAug 14, 2025
  If your Bosch Air Cleaner is producing a strange odor, especially a plastic smell, during the first few uses, this is typically normal. However, if it smells burnt even after removing the filter, you should contact support services. If the filter smells after prolonged use, try reactivating the carbon filter by placing it in direct sunlight. If the smell continues, replace the filter.
R
Robert HawkinsAug 18, 2025
Why is my Bosch Air 4000 Air Cleaner so loud?
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  Kyle SparksAug 18, 2025
  If your Bosch Air Cleaner is too loud, especially in Auto mode, it may be running at a high speed due to detected poor air quality. Try switching to a lower fan speed. If operating in manual mode, the speed may be set too high. If you hear an unusual sound or if something has fallen into the air outlet, immediately switch off the appliance and turn it upside down to remove any foreign objects. If there is an unusual sound, contact support services.
P
Penny GrantAug 23, 2025
What to do if the air quality light always stays the same color on my Bosch Air Cleaner?
- N
  Nicole StuartAug 23, 2025
  If the air quality light on your Bosch Air Cleaner always stays the same color, the particle sensor might be dirty. You should clean the particle sensor.

Summary

Explanation of Symbols and Safety Instructions

Explanation of Symbols

Defines signal words like DANGER, WARNING, CAUTION, NOTICE for risk communication.

Safety Instructions

Provides critical safety guidelines for using the appliance, including danger, warning, and caution advice.

Important Instructions

Details important usage notes like polarized plug use and replacement part recommendations.

FCC Regulatory Notices

Outlines FCC compliance, modification statements, and interference rules for the device.

Product Description

Scope of Delivery

Lists the items included in the product package.

Product Overview

Identifies the main physical components of the air purifier.

Controls Overview

Explains the functions of buttons and indicators on the control panel.

User Interface Overview

Describes the information displayed on the digital interface.

Product Specifications

Provides technical details like CADR, power, size, and operating conditions.

Installation

Installing the Filter

Step-by-step guide for inserting the air purification filter.

Operation

Understanding the Air Quality Light Ring

Explains how the light ring indicates air quality levels based on PM2.5.

Switching ON;OFF

Instructions on how to power the air purifier on and off.

Changing the Mode Setting

Details on using Auto, Manual, and Quiet modes.

Cleaning and Maintenance

Cleaning the Housing of the Air Purifier

How to clean the exterior and interior of the air purifier.

Cleaning the Particle Sensor

Procedure for cleaning the air quality sensor for accurate readings.

Cleaning the Filter

Steps to clean the air filter using a vacuum cleaner.

Replacing the Filter

Guide on how to replace the air purification filter when needed.

Resetting the Filter

Instructions to reset the filter lifetime counter after replacement.

Moving and Storage

Troubleshooting

Environmental Protection and Disposal

Online Help Resources