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I have an error code showing my carbon fiber orange filter needs to be replace. I have replaced the filter, and tried to reset it pursuit to the manual by holding the nighttime button for 5 seconds.  The filter will not reset. I have also tried to recycle the machine by holding the remote power and machine power buttons for 10 seconds.  Nothing works.  Any suggestions?

Hi Greg, I have the same issue with the filter and I will return back to Dyson to be fixed.

I’ve tried all the reset options, but no any improvements.


Thank you so much!  At least I know I am not crazy.


What machine have you got?  What orange filter do you mean?


Dyson Purifier Humidify+Cool Formaldehyde™️ PH04 (White/Gold).  The orange carbon filter that goes inside the outer filters.