How to recalibrate Humidity Reading on PH02 | Dyson Community
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The humidity reading on my PH02 reads approximately 10 points too high.  How do I recalibrate the machine to give the correct humidity setting?

@jwagner010 ,

 

Hi, the machine will recalibrate it’s sensors once you plug it into a socket. 

Simply unplug your machine, and leave it for about 5-10 minutes. Plug it back, and it would recalibrate.

If discrepancy persists after the reset, you would have to have your machine inspected. Probably, they would replace the sensor PCB assembly.

Hope this helps.