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Old 08-15-2012, 01:20 AM   #1
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390BH-60 Does your roof air keep entire coach cool

We have a 2012 390BH-60 and have just returned from our first long trip through Califonia. The weaher was quite warm on our entire holiday (80-90 degree F). with both AC units running all of the time, we were able to cool the back bedroom but the front of the unit was always hot (very seldom below outside temp). In order to improve efficiency we ran the units with fan on high and the dump valve open. We have all blinds closed and both roof vents (bathroom and kitchen) closed

The air flow coming out of AC1 is slighlty cool but certainly no where near as cold as from AC2.

Are other people having similar problems? Is AC1 defunct? Is it undersized? Does the mostly black exterior make the unit too hard to cool.
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Old 08-15-2012, 10:58 AM   #2
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Quote:
Originally Posted by lefaivre View Post

Is AC1 defunct? Is it undersized? Does the mostly black exterior make the unit too hard to cool.


Is AC1 defunct?- sounds like it may be. I would have it checked.

Is it undersized? - not sure what size your AC's are but on my coach, the rear is a 13.5k btu unit and the front is a 15k btu unit. We have had days when the front is not as cool as the rear but it is usually pretty well below the outside temp.

Does the mostly black exterior make the unit too hard to cool Pretty sure that is a contributing factor to the coach not cooling down as much.
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Old 08-15-2012, 10:40 PM   #3
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I'm having the same problem keeping my new 2011 390bh coach cool. I Had the dealer check the ac. He said you should see a 20-25 degree difference between the intake and exhaust air on the ac. Mine checked Ok. I checked the surface temps in various locations around the coach. In the shade the outside surface checked 87, in direct sunlight the temps went up to 110 in the gold painted areas and 135 in the black areas. Now I wish the thing was painted white.. I've put foil material in the front window and smaller pieces on the sunny side of the coach, this has helped. Also if it's going to be hot I turn the ac down to 67 in the morning to get a head start on temps. I'm also finding that parking the coach facing in a direction that uses the shade of the awning during the heat of the day helps. This issues is my only disappointment in my new Berk, wish it worked as good as my jayco travel trailer.

Mark
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Old 08-16-2012, 11:20 AM   #4
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There are definitely some issues about the Berk's ability to adequately cool in sunny/hot times with the stock A/C units, however it sounds like your front unit isn't working properly. The air coming out of there should feel quite a bit colder than the ambient air. Several possible reasons. You could probably find some step-by-step instructions for troubleshooting the problem on this forum if you like to do that sort I thing but I think most would take it in for repairs if you'll need the AC any more this season.
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Old 08-16-2012, 12:06 PM   #5
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Yea the designers never test the units in different conditions or some of the poor designs (ideas) would never make it in the RV. The black color is a problem for southwest travel AZ in june outside air temp 110 inside 93. Walls stayed hot to the touch until 10:30 at night. The auto setting on the thermastat switches to furnace at 32 degrees the heatpump is effective to about 40.
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Old 08-16-2012, 03:35 PM   #6
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Tom did you order your MH with the 15 front or did you change it. If you changed it how much and did you do it yourself?
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Old 08-16-2012, 03:42 PM   #7
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Phil,
It was one of the options at the time that I took. Wasn't sure that I should do it but I'm glad that I did.
Tom
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Old 08-16-2012, 03:57 PM   #8
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Does anyone use the outside sun shades (reflecting the heat before it gets inside) and how much of a difference does it make?
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Old 08-16-2012, 04:13 PM   #9
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Thanks Tom. We don't have much trouble where we live but a few time it hit 90 and no shade it was working very hard. I'm going to Indy for the FMCA rally and plan to have awnings put on the driver side windows. I think that will help.
We do use the sun shades and feel the help a lot.
Of any one is heading for Indy give me a pm.
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Old 08-16-2012, 05:25 PM   #10
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I just took my first trip in my 2011 43 ft Charleston. In the great northwest it had no problem keeping us cool. After getting home to South Texas it struggled to keep the front of the coach ambient. I know this was a sales pitch, but I questioned the dealer about having only 2 air conditioners on a unit this size and he assured me there would be no issues keeping the unit cool. I have other issues with "lightweight" components that lead me to understand the reason this coach was so much cheaper than other comparable sized coaches. I'm assuming a 15,000 btu AC unit is the biggest unit on the overhead market?
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