Introduction
This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your Dyson Purifier Humidify+Cool Formaldehyde™ PH04. Please read this manual thoroughly before using the appliance and retain it for future reference.
1. Setup
1.1 Unpacking
Carefully remove all components from the packaging. Ensure all parts are present before discarding packaging materials. The package should include the main unit, remote control, power cord, and filters.
1.2 Filter Installation
- Locate the filter covers on the main unit.
- Open the covers and insert the HEPA and activated carbon filters as indicated by the arrows.
- Ensure the catalytic filter for formaldehyde is correctly seated.
- Close the filter covers securely.
1.3 Water Tank Filling
- Remove the water tank from the base of the unit.
- Fill the tank with clean tap water up to the maximum fill line.
- Replace the water tank, ensuring it is properly seated and sealed.
1.4 Placement and Power Connection
Place the unit on a firm, level surface, away from walls to allow for optimal airflow. Connect the power cord to the unit and then plug it into a suitable electrical outlet.

2. Operating Instructions
2.1 Power On/Off
Press the power button on the unit or the remote control to turn the appliance on or off.
2.2 Modes of Operation
- Purification Mode: The unit continuously monitors air quality and purifies the air by capturing pollutants.
- Humidification Mode: Adds moisture to the air to maintain a comfortable humidity level. Ensure the water tank is filled.
- Cooling Mode: Provides a stream of purified, humidified airflow to cool the room.
- Auto Mode: The unit automatically adjusts purification and humidification settings based on detected air quality and humidity levels.
2.3 Airflow Speed and Oscillation
Adjust the airflow speed using the remote control or Dyson Link app. Activate oscillation to distribute purified and humidified air throughout the room.
2.4 Display Information
The integrated LCD screen displays real-time air quality metrics, humidity levels, temperature, and filter life. Cycle through the information using the 'i' button on the remote.
2.5 Smart Control
The Dyson Link app allows for remote control, scheduling, and detailed air quality reports. The unit is also compatible with voice assistants such as Amazon Alexa and Apple Siri for spoken instructions.
3. Maintenance
Regular maintenance ensures optimal performance and longevity of your Dyson Purifier Humidify+Cool Formaldehyde™ PH04.
3.1 Filter Replacement
- The unit will notify you when filters require replacement.
- Turn off and unplug the appliance before replacing filters.
- Replace the HEPA and activated carbon filters according to the instructions provided with new filters.
- The catalytic filter for formaldehyde does not require replacement.
3.2 Water Tank Cleaning
Clean the water tank regularly to prevent mineral buildup and maintain hygienic humidification. Remove the tank, empty any remaining water, and clean with a soft cloth and mild detergent. Rinse thoroughly before refilling.
3.3 Deep Clean Cycle
Activate the machine's monthly hassle-free Deep clean cycle at the touch of a button. Follow the on-screen instructions for this process, which helps remove mineral buildup from the humidifier components.
3.4 Exterior Cleaning
Wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
4. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | Not plugged in; power outlet issue; power button not pressed. | Ensure power cord is securely plugged in. Check power outlet. Press power button firmly. |
| No or low airflow | Filters clogged or incorrectly installed; air intake blocked. | Check and replace filters if necessary. Ensure air intake is clear of obstructions. |
| Humidification not working | Water tank empty; tank not properly seated; deep clean cycle needed. | Refill water tank. Ensure tank is correctly installed. Run the deep clean cycle. |
| App connectivity issues | Wi-Fi signal weak; incorrect app settings; unit not paired. | Ensure strong Wi-Fi signal. Re-pair the unit with the Dyson Link app. Consult app instructions for detailed steps. |
| Unusual noise | Obstruction in fan; unit not on a level surface; normal operation noise. | Check for obstructions. Place unit on a stable, level surface. Some buzzing noise during continuous monitoring is normal. |
For further assistance, refer to the Dyson Link app or visit the official Dyson support website.
5. Specifications
- Brand: Dyson
- Model Name: Dyson Purifier Humidify+Cool Formaldehyde™ PH04
- Item Model Number: 369207-01
- Color: White/Gold
- Product Dimensions: 12.3"D x 12.3"W x 36.3"H
- Item Weight: 18 Pounds
- Special Feature: Programmable
- Included Components: Humidifier, Filter, Cord & Remote
- UPC: 885609022994, 885609022307
- Filtration: Certified HEPA, Activated Carbon, Catalytic Formaldehyde Filter
6. Warranty and Support
For information regarding your product's warranty, please refer to the warranty card included with your purchase or visit the official Dyson website. For technical support, replacement parts, or further assistance, please contact Dyson customer service or visit their online support portal.
Dyson Official Website: www.dyson.com





