[hildjo]

Thanks Bill, For your fast reply. I have the unit running , so far all is well. It happened yesterday after being run all day and at the hottest time in the afternoon. The rest of the coach is just fine, the kitchen and bedroom had cold air all day. The front is running fine now, but,I will see how long it goes today. FLIGHT SYSTEMS, INC WILL REBUILD FOR $85.00 also, it looks like there is a company called ACS INDUSTRIAL SERVICES that will also rebuild the boards. Filters are clean and does not appear to have frozen up. Thanks for your help, I'll post an update