Was very happy with my unit until tonight. Went to get a stick and noticed that the humidity and temp was low. It’s not near a heat source or a cold spot. Plenty of distilled water in the tray. Controls respond.  Did some investigating at it appears that the hearing unit and fan have stopped. I originally purchased in November of 2017 so the warranty is out.  Checked with the company and it’ll cost more to fix than buy a new one. That’s planned obsolescence for you.