#2 A/C not blowing cold air...

[V3905]

Getting ready for our Labor Day trip. Just notice #2 A/C is not blowing cold air, just blowing air. What can I do or check myself?? Do I need to take into shop?
Any help would be appreciated. By the way it's a Voltage 3905 '13 model year.

[Camper2b]

Can you hear the compressor kick in?

[arlan in arizona]

And the location of your 2nd air is where? I don't want to sound condescending but how long have you have the unit and are you sure the thermostat is set on Cool and not Fan? Just a thought.

[V3905]

#2A/C is in the master bed room. Yes I did confirm that it's on cool, not fan. I do believe the compressor is kicking on, but not sure. I'll have to recheck that, it was 86 degrees inside the coach. I didn't hang out in there.

[azdryheat]

Just curious, did the bedroom A/C work prior to this?

[V3905]

Yes, just returned from a month long trip 3weeks ago. All was fine.
I keep the coach plugged in 24/7/365 at the barn, thermostats set at 79/80.
Last weekend was the last time in the unit everything was working just fine..