Hurrah, we finally got our Dash AC fixed....$1,400 later..... So, here is what happened. When there is a default in the Dash AC, the system shuts the AC doors and defaults to defrost. After 13 hours of troubleshooting our mechanic found a chaffed vapor line which was leaking and it was buried behind the firewall. The three inches of line was replaced and insulated with a protective tube to prevent chaffing. The dash AC never worked like it now does after this repair. We believe it was always like this and we had just accepted Camping World's explanation that the THOR ACE dash AC really was not robust.... Well, guess what.... now we have AC in the front cab like never before. I'll post the mechanic's detailed report later. Oh, we saw a brand new THOR ACE today, broken down in a parking lot with duck tape on their exterior windows.... WOW, THOR quality is not getting any better.
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