Dyson Air Purifier Error Code F5: How to Fix It

Q: What does Dyson error F5 mean?

Error F5 indicates a water sensor fault in Dyson air purifier humidifiers. The sensor is not detecting water properly, often due to dirt or misalignment.

Q: How do I clean the water sensor on my Dyson?

Turn off and unplug the unit. Remove the water tank, locate the metal sensor probe inside the housing, and gently wipe it with a soft, dry cloth. Rinse the tank and dry before reassembling.

Q: Can I use my Dyson without the water tank?

Yes, but the humidifier function will not work. You can run the purifier only, but the error F5 may still appear due to the missing tank.

Q: Why does error F5 keep coming back?

If error F5 returns after cleaning, there may be mineral buildup, a faulty sensor, or a damaged tank seal. Deep clean the sensor with vinegar solution or contact support for replacement parts.

Q: Will unplugging my Dyson reset error F5?

Yes, unplugging for 60 seconds can clear temporary glitches. If the error persists, the issue is hardware-related.

Abstract

Error Code F5 on your Dyson air purifier humidifier means the water sensor has detected a problem. This typically indicates the sensor needs cleaning, the tank is misaligned, or there's a blockage. Don't worry—this is usually an easy fix you can do at home.