2013 Phaeton 40QBH Dash air blows, no cold air.

[rocketeer]

Howdy all.
We lost the cooling in our dash air, worked great one day, quit cooling the next. Everything works on the dash, blower, lights etc. What I need help with is locating the fuse for the compressor. If you know, I could sure use some help. Also, there are two fuse boxes in the compartment in front of the driver side front wheel. The top one is Freightliner and the fuses are listed in the cover. The lower one has a clear plastic cover and several banks of fuses and resetting breakers but no list. I have looked everywhere for a diagram with no luck. When I traced my power step broken wire it went to this fuse box, possible that this box contains the A/C fuse. If you can lead me to a fuse diagram I would certainly appreciate your help. Thank you!

[Skip426]

Most times the compressor doesn't have it's own fuse , it takes a feed from the dash switch same as the fan .
Your issue sounds like you've lost charge in the system and the low pressure switch has shut the compressor off to avoid damage.
Do you know the manufacturer of your dash A/C system ? Evans/Tempcon ? Denso?
Here's a Evans ( early ) schematic.

[lllkrob]

Your AC is a Denso unit. I agree with the previous post, most likely you are low on Freon. This unit takes 2.1 lbs of R134, DO NOT OVERCHARGE the system. You can cause severe compressor damage if you do.
Take the coach to a AC professional repair shop and have them replace the receiver dryer and evacuate and recharge the system with R134 containing dye and leak test the system.