Even my dealer did not know how to check it.
I had to remove the plastic cover to get a model number and serial number.
From there an Internet search came up with a Coleman Mach 3 15K air conditioner. The manuals were available online.
For the record, the "As built" was wrong as it had the standard AC listed. The correct "As Ordered" AC was actually on the roof.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW