![Amazon.com: Dyson Pure Hot + Cool Air Purifier, Heater + Fan - HEPA Air Filter, Space Heater and Certified Asthma + Allergy Friendly, WiFi-Enabled – HP04 : Home & Kitchen Amazon.com: Dyson Pure Hot + Cool Air Purifier, Heater + Fan - HEPA Air Filter, Space Heater and Certified Asthma + Allergy Friendly, WiFi-Enabled – HP04 : Home & Kitchen](https://m.media-amazon.com/images/I/61AOnUbp3DL.jpg)
Amazon.com: Dyson Pure Hot + Cool Air Purifier, Heater + Fan - HEPA Air Filter, Space Heater and Certified Asthma + Allergy Friendly, WiFi-Enabled – HP04 : Home & Kitchen
![Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube](https://i.ytimg.com/vi/KIUXvCu6-SA/maxresdefault.jpg)
Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube
![Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube](https://i.ytimg.com/vi/N9nDgRun69U/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLAUkJQIZWvwv1SLa-utj0M0fgaZfA)
Troubleshoot for 999 PM2.5 Sensor Problem- Dyson TP04 TP06 TP07 TP7A TP09 HP04 HP06 HP07 HP7A HP09 - YouTube
![My Dyson is stuck at 999 for PM2.5 and PM10 and is out of warranty.. any way to clean the sensor? : r/dyson My Dyson is stuck at 999 for PM2.5 and PM10 and is out of warranty.. any way to clean the sensor? : r/dyson](https://preview.redd.it/o13l7ykrkjr71.jpg?auto=webp&s=0d04c2479201b2d37553a89e9ca4779b6f06a293)