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Old 09-10-2018, 11:22 AM   #1
dkb
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Cool Air conditioners aren't cooling when 90 degrees out

The fifth wheel portion of my camper is the living room and only has two vents for the main air conditioner. Even keeping the bedroom air conditioner on also, cannot keep the living room area below 90 when it's 90 out. We have a 2016 forest river chapparol. Otherwise love it.
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Old 09-10-2018, 01:56 PM   #2
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You should probably try all the advice given on the other threads about your a/c not cooling.

If nothing works then have an expert look at it. It is not working as it should.

We RV frequently in southern AZ in the summer (100-112 degrees). We used to have one 15k that kept our 35' fiver comfortable during the heat. Now we have two 15k a/c units that keep it very nice. We do cover the sunny side windows and roof vents/skylights, and run the a/c 24 hours a day.
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Old 09-10-2018, 07:41 PM   #3
dkb
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I have noticed last winter that the end Windows in The living room area in the fifth wheel section were very hot to the touch ! Can that possibly be part of the problem and do you think there's a solution for that ? This area which is normally the bedroom, is open to the kitchen area in the center of the camper...which is where the thermostated air conditioner is...
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Old 09-11-2018, 01:35 AM   #4
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Yep, windows are always a heat source in the summer. We close the blinds on the sunny side, and then either put blankets or reflectix if it's really hot.
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Old 09-11-2018, 02:30 AM   #5
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dkb,
We have a 2018 Chaparral 370FL with one AC. Located mid of RV with vents throughout.
First time in hot weather we had to program the thermostat to get the AC operating.(Dealer did not set it up).
We were 35C (95F) temp. outside and the RV was hotter inside (41C, 105.8F).
Set the thermostat to Auto without inside temp change then set it to High Cool. The fan ran a higher speed (with lot's of noise) but did not see a temperature change inside. All blinds, windows, vents closed. Roof vents are covered with black Maxxair covers and inside shades, Awning was extended. Sunroof in bathroom was not covered. Bathroom door was closed.
Our RV goes back to the Dealer on the 27th for many repairs. The AC issue is one of them and will inform of the outcome.
A fellow I work with had the same issue with a different brand than ours. All he had to do was pull the inside cover off his AC and move the thermocouple up a few fins.
I'm with you, love the RV.
Just disappointed in the quality for price.
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Old 09-11-2018, 08:06 AM   #6
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Get a small thermometer. Measure ambient air temp. Then measure the temp of the air coming out of the ducts. If its near a 20 degree drop, your a/c is doing all it can.

If you are at 105 ambient, the BEST you can expect from your a/c is about 85 degrees out of the ducts. Of course, eventually you will 'exchange' enough air to drop the ambient to 85. At that point you can expect 65 degree air out the a/c vents. That takes time. Don't expect a 105 degree camper to be at 68 degrees in 20 minutes. It simply won't happen.

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Old 09-11-2018, 08:44 AM   #7
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Keeping the glass cool is actually easy, “Gila”films of St.Louis makes a window film that blocks 98% of the UV light. Gila has an installation video. All you need is a SOFT squeegee so you don’t stretch it and a SHARP knife for trimming. It is applied by mixing dish soap and spraying bothe the film and the window, slide the film in place, trim and let dry VOILA!!

We found it by accident in a hardware store and tried it. Our trailer’s table that at times was so hot you had to be careful touching it, the film cured it!
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Old 10-09-2018, 01:10 AM   #8
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Buy a FLIR one thermal image camera that attaches to your smartphone and you can search the hot spots in real time
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