Crusader 320RLT A/C unit not cooling

[MuddaFadda]

I have a 2013 Crusader 320RLT 5th wheel and the a/c just stopped cooling, the compressor works, but no cool air. It is a 15,000BTU ducted, no part of the a/c unit is in the 5th wheel and can only access it from roof top.

Does any one know what model a/c units they came with? I have a feeling I will have to replace it.

Any ideas?

Thanks
Bill