I've had this for a little over a year (4 months out of warranty) and it just started acting up. I noticed the temperature reading on the panel was showing a lower temperature than the unit was set at. I have it set at 66, the panel is reading 59. The temperature probe is located about two inches above the internal heat sink. I believe that is working correctly, because if I blow air on it, the temperature quickly raises a few degrees and then lowers again to 59. I have unplugged it twice overnight to see if it would reset, to no avail. I emptied it this morning to inspect and clean the fans. The internal fan is running, but the heat sink is producing a fair bit of condensation. It was not dirty, but I blew it off with compressed air anyway. Took the back panel off and both of the external heat sink fans are running as well. They were a bit dirty, but in no way restricted. Another thing I have noticed is that the internal fan used to kick into high speed frequently and you could hear it running, it does not do that currently. Fan? Board? Any help is greatly appreciated.