A couple of years ago I found Flight Systems in Mechanicsburg Pa. that repairs a wide range of electronic controls. They repaired my cruisair SMXII keypad for 80.00 dollars in less than a week. They also manufacture improved and updated aftermarket keypads for 159.00. I believe that this company can repair most generator/air conditioner controls found on our boats. Their technical support staff is friendly and helpful, if you have problems with these systems I suggest you give them call. www.flightsystems.com
PS. They have trouble shooting guides for cruisair systems for download.