This weekend we were camping and had the A/C on shortly after setup to cool down the unit. When I went in the camper later then evening it was warmer inside than outside. So i started troubleshooting. I turned the A/C to Fan Mode only and Ice started to blow out of the ducts. This usually means low Freon. So i took the units to the dealer Monday and they are telling me that they can not even look at the A/C until it is 70 degrees outside. Is this TRUE? I'm in Louisiana and the temps are in the high 60's. The unit is a 2017 Salem 273QBXL with a Dometic 15,000 BTU A/C. I'm still under warranty so that rules out tapping the line and adding Freon.