I bought one of these from a local supplier. The good, when it didn’t work properly I called Minka and they promptly answered the phone. I described the spastic actions of the fan and asked for trouble shooting tips. They said it sounded like I had a bad controller and to return it. I did and exchanged it for an a/c unit vs this dc unit. New one installed much easier and worked well. The ac to dc converter fits in a small space in the ceiling canopy making the unit very difficult to wire and install. Loved the concept, but didn’t want to do a second difficult install and take a risk on another bad unit.