I just bought a 2009 3355RL and I live in Florida. The air conditioner will not keep the temp inside below 80 in any part of the camper except for the toilet room. Is this normal for the heat in Florida? The temperature was 90 outside and the humidity was high. All windows shades were closed, but there was no shade outside. Two of us were in the camper all day and only went outside a couple of times. The air conditioner ran all day long and never shut off until the sun went down.