I also have the problem of the black box turning off and the refer shutting down. To help cool the unit I put in two 60cfm squirrel cage fans behind the refer and for the black box I found out that if you hold a strong magnet to the upper right hand corner of the black box it should reset itself. This is after the stack cools off. I took mine in and they told me that they needed a special tool to reset the box but here on the forum someone told me about the magnet. My box set off on a trip in the middle of AZ. The dealer wanted the coach for three days and the dealer in chichgo charged me $56.00 to reset it.